INTERLOCK MECHANISM

Abstract

A drive interlock mechanism for an accessory for a food processor having a rotating drive, comprising: an engagement formation for engaging the rotating drive; a cooperating member for cooperating with the accessory so as to move the engagement formation into engagement with the rotating drive; and means for urging the engagement member away from the rotating drive so as to disengage the engagement member from the rotating drive.

Claims

1-84. (canceled)

85. An adaptor for a food processor comprising a rotating drive, the adaptor being in the form of a frame, said adaptor comprising: a formation for enabling the frame to be supported by the food processor; and a support for a cutting tool, wherein the frame is arranged to permit the cutting tool to pick up drive from the rotating drive so as to allow the cutting tool to rotate about an axis that is offset from the axis of rotation of the rotating drive.

86. The adaptor according to claim 85, wherein the frame is arranged to support the cutting tool to pick up drive at a location spaced apart from the axis of rotation of the cutting tool, preferably only at a location spaced apart from the axis of rotation of the cutting tool.

87. The adaptor according to claim 85, in which the cutting tool rotates about an axis substantially perpendicular to the axis of rotation of the rotating drive.

88. The adaptor according to claim 85, comprising an engagement formation for engaging the rotating drive of the food processor, and a transmission for transmitting drive from the rotating drive to the cutting tool.

89. The adaptor according to claim 88, comprising a lid and a safety interlock for engaging the engagement formation with the rotating drive only when the adaptor is fitted with the lid.

90. The adaptor according to claim 89, wherein the transmission and/or engagement is also the support for the cutting tool.

91. The adaptor according to claim 85, wherein the frame is adapted to be fixed relative to the food processor, and/or wherein the formation is adapted to cooperate with the food processor, preferably wherein the formation engages with the food processor to prevent rotation of the frame with the rotating drive; preferably, the adaptor is bodily static in use, and/or wherein the formation is spaced apart from the axis of rotation of the cutting tool, preferably wherein the formation is only provided at a location spaced apart from the axis of rotation of the cutting tool.

92. The adaptor according to claim 85, wherein the frame is arranged to support the cutting tool at a location spaced apart from the axis of rotation of the cutting tool, preferably only at a location spaced apart from the axis of rotation of the cutting tool, and preferably (only) adjacent a perimeter of the cutting tool, and/or wherein the frame includes an aperture through which food processed by the cutting tool is able to pass when the cutting tool is supported by the frame, preferably wherein the cutting tool comprises a cutting member, and wherein the aperture is dimensioned to be at least as large as an area traced by the cutting member when rotating, and/or wherein the aperture is offset from the axis of rotation of the rotating drive.

93. The adaptor according to claim 85, wherein the support comprises a retaining formation for preventing the cutting tool from rotating about the axis of rotation of the rotating drive, and/or wherein the support is arranged so as to retain the cutting tool in a fixed position, and preferably the support is dimensioned no larger than that needed to receive the cutting tool, and/or wherein the support is in the form of a flange, preferably wherein the flange is recessed within the frame, and/or wherein the support is arranged so as to support a base of the cutting tool, and preferably so as to support only a base of the cutting tool.

94. The adaptor according to claim 85, further comprising an aperture for receiving the rotating drive of the food processor, preferably wherein the aperture for receiving the rotating drive of the food processor has a diameter that is substantially the same as the diameter of the rotating drive, the aperture thereby acting as a bearing for the rotating drive, or wherein the aperture for receiving the rotating drive of the food processor has a diameter that is substantially larger than the diameter of the rotating drive, thereby to provide clearance between the rotating drive and the aperture.

95. The adaptor according to claim 85 further comprising an engagement formation for engaging the rotating drive of the food processor, preferably further comprising transmission for transmitting drive from the rotating drive to the cutting tool, preferably wherein the transmission comprises a gear, more preferably wherein the gear engages with the rotating drive, and more preferably still wherein the drive gear engages directly with the rotating drive and the cutting tool, preferably wherein the transmission is adapted to translate drive perpendicularly, and/or wherein the transmission and/or engagement is also the support for the cutting tool, and/or wherein the transmission includes a gear, preferably an internal gear and/or a ring gear.

96. The adaptor according to claim 85, wherein the frame is arranged to support the cutting tool to pick up drive directly from the rotating drive, and preferably the adaptor comprises no intermediate transmission between the cutting tool and the food processor.

97. The adaptor according to claim 85, wherein the formation is adapted to cooperate with at least one of: a lip, rim or an internal wall of a bowl of the food processor; a formation on the bowl for supporting a lid for the bowl; or a drive outlet of the food processor, and/or wherein the adaptor is shaped and arranged to fit within the bowl.

98. The adaptor according to claim 85, wherein the adaptor or food processor is provided with a lid, and wherein the formation is adapted to cooperate with the lid, preferably wherein the frame is configured to align the cutting tool with a feed tube of the lid when the cutting tool is supported by the frame.

99. The adaptor according to claim 85, wherein the frame is orientated to support the cutting tool so that the axis of rotation of the cutting tool is parallel to the axis of rotation of the rotating drive of the food processor, and/or wherein the frame comprises a hollow spindle about which the cutting tool rotates, preferably wherein, when the cutting tool is supported by the frame, the hollow spindle extends only towards the cutting tool, and/or wherein the cutting tool is permitted to spin when supported in the frame, and preferably to rotate only by spinning, and/or further comprising a blocking member for blocking food from coinciding with the axis of rotation of the cutting tool when food is being processed by the cutting tool.

100. A food processing attachment for a food processor comprising a rotating drive, the attachment comprising an adaptor according to claim 98, and a cutting tool for use with the adaptor comprising: a cutting member; and an engagement formation for picking up drive from the rotating drive so as to rotate the cutting member, wherein the engagement formation is spaced apart from the axis of rotation of the cutting tool, preferably adjacent the periphery of the tool.

101. The food processing attachment according to claim 100, wherein the cutting tool is disk or cone shaped and/or is removable from the adaptor, preferably including at least two cutting tools, wherein each cutting tool comprises different cutting members.

102. The food processing attachment according to claim 100, wherein the cutting tool further comprises a corer or a prong arranged coaxially with the axis of rotation of the cutting tool, and/or wherein the further cutting member is orientated to cut at least in the same direction as the cutting member, and/or further comprising a reversed cutting member orientated to cut in a different direction opposite to the cutting member, and preferably in an opposite direction to the cutting member.

103. The food processing attachment according to claim 100 including a drive interlock mechanism comprising; a cooperating member for cooperating with the adaptor so as to move the engagement formation into engagement with the rotating drive; and means for urging the engagement member away from the rotating drive so as to disengage the engagement member from the rotating drive.

Description

[0098] One or more aspects will now be described, by way of example only and with reference to the accompanying drawings having like-reference numerals, in which:

[0099] FIG. 1 shows a cutting tool according to the present invention;

[0100] FIG. 2 shows an exploded view of a food processor incorporating the cutting tool;

[0101] FIG. 3 shows a top view of the food processor incorporating a cutting tool, with the lid of the food processor being removed;

[0102] FIG. 4 shows a perspective view of an attachment incorporating the cutting tool in engagement with another example of a food processora stand mixer;

[0103] FIG. 5 shows a partial cutaway side view of an attachment incorporating the cutting tool in engagement with the stand mixer;

[0104] FIG. 6a shows a perspective view of an adaptor of the attachment;

[0105] FIG. 6b shows a top view of the adaptor

[0106] FIG. 7 shows a schematic cutaway side view of the adaptor;

[0107] FIG. 8a shows a schematic partial exploded view of the attachment and the stand mixer from the front;

[0108] FIG. 8b shows a schematic partial exploded view of the attachment and the stand mixer from the side; and

[0109] FIG. 9 shows a schematic view of an inlet chute.

SPECIFIC DESCRIPTION

[0110] FIG. 1 shows a cutting tool 100 for a food processor according to the present invention. The cutting tool 100 comprises a cutting member in the form of a main blade 104, and an engagement formation 108, for picking up drive from a rotating drive of a food processor (not shown), in the form of a ring gear. The cutting tool 100 is rotatable, when the engagement formation 108 picks up drive, about an axis of rotation 112. The axis of rotation 112 is located centrally on the cutting tool and the engagement formation 108 is located away fromthat is, at a location spaced apart fromthe axis of rotation 112 and at a periphery of the cutting tool 100.

[0111] The cutting tool 100 is provided as a flat disc, with the engagement formation 108 wrapping around the entire periphery of the cutting tool such that the cutting tool 100 is capable of being rotated about axis 112 continuously.

[0112] The cutting tool 100 further comprises a circular plate 116, upon which the main blade 104 is mounted. The engagement formation 108 extends perpendicularly above and below the plate 116, such that the plate 116 is located approximately at a midpoint of the height of the engagement formation 108. The ring gear allows the cutting tool 100 to be driven in both rotational directions.

[0113] The main blade 104 comprises a cutting edge 120 extending radially across the plate 116 to the engagement formation 108, such that the cutting edge is substantially parallel to a radius of the plate 116. The main blade 104 is supported on the plate 116 at an end 124 opposite to the cutting edge 120, such that the main blade 104 is inclined relative to the plate 116. An aperture 128 is provided between the plate 116 and the cutting edge 120 such that foodstuff cut by the main blade 104 passes through the aperture 128 as the cutting tool 100 is rotated.

[0114] The cutting tool 100 is arranged to rotate and to receive foodstuff (such as a vegetable) coincidental with the axis of rotation 112, thereby to cause the main blade 104 to be in continuous contact with foodstuff as the cutting tool rotates. Further to ensure continuous contact, foodstuff is urged against the cutting tool and into contact with the plate 116 (e.g. by hand or by a pusher for an inlet chute).

[0115] Continuous cutting of the foodstuff by the main blade 104 produces a continuous helical ribbon of processed foodstuff centred about axis 112. The processed foodstuff may be referred to as spiralised or julienned. The angle presented by the main blade 104 in relation to the plate 116 determines the thickness of the ribbon (typically 3 mm-10 mm, and in particular 4 mm-6 mm); this angle also causes the main blade 104 to urge processed foodstuff through the aperture 128 and hence through the cutting tool also.

[0116] In order to allow effective spiralising, a central aperture 132 is provided on the plate 116. The main blade 104 extends radially up to the central aperture 132. A remnant core of processed foodstuff (which is not cut by the main blade 104) is allowed to pass through the central aperture 132; this helps to ensure that the portions of the foodstuff surrounding the core remain in continuous contact with the main blade 104, rather than the core acting as an obstruction for the procession of the foodstuff through the cutting tool.

[0117] To ease procession of the core through the aperture 132, the plate 116 is provided with, around the central aperture 132, an upwardly-extending (i.e. towards foodstuff that is to be processed by the cutting tool) flange 136 to receive, define and direct the core of foodstuff through the aperture 132. The flange 136 is provided with a cutting edge (e.g. straight or serrated), so as to core foodstuff as it contacts the flange 136. The flange 136 and central aperture 132 together may be referred to as a corer. To improve coring further, the flange is engaged, or integral, with the cutting tool so that the flange rotates with the cutting tool.

[0118] In order not to interfere with the procession of the core through the aperture 132, the cutting tool has no spindle coincident with the axis of rotation 112, instead the engagement formation 108 is provided away from the axis of rotation.

[0119] The cutting tool 100 comprises a further cutting member 140, in the form of a comb-like blade having spaced cutting teeth 144 for incising slits through foodstuff. The cutting teeth 144 of the comb-like blade are arranged to extend upwardly from the plate 116 and are arranged at substantially regular intervals (of around 3 mm-10 mm, or around 4 mm-6 mm) radially along the plate 116. The height of the comb-like blade 140 is shorter than the height of the engagement formation 108 that is above the plate 116; this is in order to minimise bending stresses on the comb-like blade.

[0120] The comb-like blade 140 is positioned ahead (relative to the direction of rotation of the cutting tool 100) of the cutting edge 120, such that foodstuff is first cut by the comb-like blade 140 and then by the main blade 104 as the cutting tool 100 is rotated. The comb-like blade 140 cuts along planes that are substantially perpendicular to the cutting plane of the main blade. As a result, in combination, the comb-like blade 140 and the main blade 104 thereby produce a cross-cut, resulting in multiple continuous helical ribbons (i.e. up to as many ribbons as there are cutting teeth 144) of processed foodstuff.

[0121] The number and dimensions of the ribbons of processed foodstuff produced depends on the number and arrangement of the cutting teeth 144 on the comb-like blade 140. In an example, between ten and fifteen equally spaced cutting teeth are provided. The spacing between the teeth of the comb-like blade 140 is similar or equal to the spacing between the cutting edge 120 and the plate 116, such that the ribbons have a substantially square cross section.

[0122] The comb-like blade 140 is supported on the plate 116 and coupledfor stabilityto the engagement formation 108 and/or to the flange 136.

[0123] In one example, the cutting tool 100 comprises yet a further cutting membera reversed cutting member (not shown)provided on an opposite side of the plate 116 to the main blade 104. The reversed cutting member is orientated in an opposite direction to the main blade 104 and away from the main blade so as to prevent the reversed cutting member interfering with foodstuff passing through the aperture 128. In this way, a multifunctional cutting tool is provided since the cutting tool is available to be flipped to select whether the main cutting member or the reversed cutting member is used.

[0124] Furthermore, since the cutting tool is driveable in both clockwise and anticlockwise directions, ribbons of foodstuff processed by the main blade 104 are available to be cut to length by reversing the direction of rotation of the cutting tool (i.e. by reversing the drive of the food processor). In order to achieve this, the reversed cutting member is provided proximate to the main blade 104 so that when the cutting tool is driven in reverse, foodstuff that has passed through the aperture 128 encounters the reversed cutting member, which cuts against the foodstuff.

[0125] For example, the food processor is provided with a program in which: the cutting tool 100 is driven anticlockwise at a predetermined speed for a predetermined time period, such that foodstuff is cut by the main blade 104 and passes through the aperture underneath the main blade 104; the direction of rotation of the cutting tool 100 is then reversed, causing the reversed cutting member to cut the processed foodstuff depending through the aperture 128 under the main blade 104; and the direction of rotation is then reversed again such that foodstuff is once more cut by the main blade 104. By repeating this program, several discrete sections (i.e. as many such sections as cycles are completed) of predetermined length ribbons or strands of foodstuff are output.

[0126] In order to facilitate cleaning, the plate 116, cutting members 104, 140 (including the reversed cutting member), plate 116, engagement formation 108 and/or corer 136, 132 are detachable from one another.

[0127] Furthermore, where the plate 116 is removable from the engagement formation 108, the plate is available to be used in a modular fashion, where the plate 116 can be replaced with an alternative plate 116 (e.g. provided with a different cutting member). Alternatively or additionally, the cutting members are removable and replaceable themselves, allowing the functionality of the cutting tool 100 to be varied.

[0128] FIGS. 2 and 3 show a (bottom-driven) food processor 200 incorporating the cutting tool 100 within an adaptor 250 for permitting use of the cutting tool with the food processor 200.

[0129] In more detail, FIG. 2 is an exploded view of the food processor 200, cutting tool 100 and adaptor 250. The food processor 200 comprises a base (not shown) having a motor and a rotating drive outlet, a bowl 210, a drive shaft 220 rotating about axis 224 and extending through said bowl 210, and a lid 230 for engagement with the bowl 210.

[0130] Existing food processors of the kind shown in FIG. 2 are typically not suitable for spiralising, and instead their functionality is limited to blending, slicing, grating and peeling. Accordingly, in order to adapt the food processor into a spiraliser, the adaptor 250 is provided, in the form of a frame, for retrofitting to the food processor so as to allow the cutting tool 100 to be driven by the food processor 200 in a way so as to effect, at least, spiralising.

[0131] The adaptor 250 comprises a formation 252 for enabling the frame to be supported by the food processer, and specifically its bowl 210. The formation 252 is provided away from the axes 112 and 224, and instead around the periphery of the adaptor 250. For example, the formation 252 is shown in FIG. 2 as a lip (or rim) that is configured to rest upon a flange 254-2 provided within the bowl (usually for supporting the lid 230). In this way, the adaptor is supported within the bowl; in order to do so, the adaptor is therefore dimensioned to fit within the bowl. In other examples, the formation 252 is any surface that the bowl can support, for example on the lip of the bowl, or simply an arrangement that is dimensioned to be supported by the inner or outer walls of the bowl 210.

[0132] The adaptor 250 further comprises a support 256 for the cutting tool 100 that permits the cutting tool 100 to rotate freely, for example by spinning. The support 256 is in the form of a cradle having a flange 256-1 upon which the cutting tool rests. The flange 256-1 supports the cutting tool away from its axis of rotation 112, and instead about its periphery. The support 256 is recessed since it comprises a retaining wall 256-2 surrounding the cutting tool, in this way the wall 256 acts as a retaining formation preventing the cutting tool from moving in any direction other than about and/or along axis 112. For example, the wall 256-2 prevents the cutting tool from rotating about the axis of rotation of the drive shaft 224.

[0133] The support 256 is provided with an aperture 256-3 below the cutting tool and offset from axis 224. In this way, processed foodstuff falls from the cutting tool through the adaptor and into the food processor's bowl. Preferably, the aperture 256-3 is coincident with an area traced by the main blade 104, and centred about the axis 112.

[0134] Furthermore, the adaptor 250 supports the cutting tool proximate to the rotating drive shaft 220 so as to allow the cutting tool 100 to pick up drive directly from the rotating draft shaft 220, which is typically provided with gear teeth 258, hence the engagement formation 108 intermeshes with these gear teeth 258. The adaptor 250 positions the cutting tool such that axes 112 and 224 are not coaxial; that is, these axes are offset from one another.

[0135] Adaptor 250 also comprises an aperture 260, arranged coaxially with axis 224, through which the drive shaft 220 passes. The aperture 260 overlaps with the support so as to allow the cutting tool 100, specifically its engagement formation 108, to engage directly with the rotating drive 220.

[0136] To allow the cutting tool 100 to rotate when docked in the adaptor 250, the support 256 is provided with a bearing. For example, as shown in FIG. 2, the bearing is a plain bearing, in the form of the flange 256-1; that is, a surface having no moving parts, but simply a sufficiently low-friction surface (e.g. PTFE) and/or a sufficiently low surface area so as to allow the cutting tool to spin without excessive wear and heat generation. In another example, the bearing comprises a rolling mechanism, such as ball bearing, and in yet a further example the bearing is providedin addition or alternatively to the bearing on the adaptoron the cutting tool 100.

[0137] As is typically the case, the bowl 210 is cylindrical, accordingly the adaptor 250, and more specifically the formation 252, conforms to the shape of the bowl so as to maximisefor a secure fasteningthe contact area between bowl and adaptor. Other shapes of bowl are known, accordingly non-circular adaptors are also available, including rectangular and elliptic adaptors.

[0138] As is also known, the lid 230 and bowl are arranged to engage with one another so as to create an enclosure within the bowl 210.

[0139] The adaptor 250 is configured so as not to interfere with any formations for permitting engagement of the lid to the bowl by being suitably dimensioned or by mimicking these formations so that the lid is available instead to engage with the bowl via the adaptor. As shown in FIG. 2, the adaptor is dimensioned, by being adequately shallow and narrow, to receive the lid and not to obstruct a locking mechanism (comprising flanges 254-1 in the bowl and cooperating grooves 254-2 on the lid) for the bowl and lid.

[0140] Lids of food processors are typically provided with an inlet chute 262 for foodstuff extending upwardly away from the lid 230 and offset from the axis of the rotating drive 224. The lid 230 further comprises a boss 224 to which the shaft 220 is journaled. A pusher 266 for the inlet chute 262 is also typically provided to allow a user to urge foodstuff, through the chute 262, towards the bowl.

[0141] Accordingly, the support 256, and hence the cutting tool, is aligned with the inlet chute 262. Furthermore, the support is coaxial with the inlet chute 262 so that the axis of rotation 112 of the cutting tool 100 is coincident upon, and aligned substantially with, inlet 262. In this way, the cutting tool 100 receives foodstuffs from the inlet 262 over a maximal surface area of the plate 116 and so foodstuff is also available to be coincidental with axis 112 when in contact with the cutting tool, which in turn permits spiralising. The cutting tool 100 (and hence support 256) is dimensioned to be, at least, as wide as the inlet chute 262 so as to maximise the working area of the cutting tool 100.

[0142] FIG. 3 is a top view of the adaptor 250 engaged with the food processor 200 without the lid 230. As best seen in FIG. 3, when the shaft 220 is rotated in a clockwise direction 225-1 (when viewed from above), as a result the cutting tool is therefore rotated counter-clockwise 225-2.

[0143] The adaptor is formed to comprise a solid section 268 extending across half the bowl and the other half is provided with ribs 264 for strength. The adaptor as a whole is formed to resist the force of foodstuff being urged onto the cutting tool 100.

[0144] FIGS. 4 to 8 show an alternative example of an adaptor 350 for a food processor, and specifically for a stand mixer 400.

[0145] In more detail, FIG. 4 shows a perspective view of the adaptor 350 with the stand mixer 400 (or similar kitchen machine having a horizontal drive output) for, incorporating the cutting tool 100, and engaged with the stand mixer 400.

[0146] The stand mixer 400 may be provided with a rotating drive 410 for attachments (such as blenders, meat grinders and spice mills) on a front, side, top, or rear surface of the stand mixer and the rotating drive may be a slow-speed drive.

[0147] The adaptor 350 comprises a frame 352, a formation 356 for enabling the frame to be supported by the stand mixer, and a support 365 for the cutting tool 100.

[0148] As with the example shown in FIGS. 2 and 3, the frame 352 is configured to permit the cutting tool 100 to pick up drive from the rotating drive 410 so as to allow the cutting tool 100 to rotate about an axis 390 that is offset from the axis of rotation 386 of the rotating drive 410 (in this case such that the axes are substantially perpendicular to one another).

[0149] In order to engage with the stand mixer 400, the formation 356 forms part of a coupling, in the form of sprung members on the adaptor for locking into a cooperating socket on the stand mixer.

[0150] In this example, and unlike in the example of FIGS. 2 and 3, the adaptor 350 includes an engagement formation 355 for picking up drive from the rotating drive 410 of the food processor. The engagement formation 355 is in the form of a square spindle.

[0151] The adaptor 350 also includes transmission 359 for transmitting drive from the engagement formation 355 to the cutting tool 100.

[0152] In the example shown, the support 365, which is in the form of a ring gear, is part of the transmission 359. By means of engaging gears and drive shafts, rotational drive is transmitted from the engagement formation 355 to the support. The ring gear supports the cutting tool 100, at its periphery, by intermeshing with the engagement formation 108 of the cutting tool. In this way, the ring gear supports the cutting tool at its periphery so as to pick up drive away from its axis of rotation 390.

[0153] The frame 352 is provided with an aperture 325 arranged coaxially with the support 365, and hence also the cutting tool.

[0154] The adaptor 350 further comprises a lid 360 for engagement (for example, by means of a bayonet coupling) with the adaptor so as to obstruct access to the aperture 325 from above.

[0155] The lid 360 comprises an inlet chute 362 aligned with the cutting tool, and therefore also aligned with the support 365 and aperture 325. In this way, a central axis of the inlet chute 362 is aligned with the axis of rotation 390 of the cutting tool 100.

[0156] For safety, the frame is provided with a plurality of engagement formations for engaging with the lid 360, such as bayonet flanges 358. The lid 360 is provided with corresponding engagement formations, in the form of cooperating groves (not shown), to lock the lid 360 to the adaptor 350.

[0157] To collect processed foodstuff, the adaptor 350 further comprises a container 310 for positioning directly below the cutting tool 100. The adaptor 350 and container 310 are also provided with cooperating engagement formations so as to couple together. Alternatively the container stands alone.

[0158] FIG. 5 shows a partial cutaway side view of the adaptor 350 in engagement with the stand mixer 400. As best seen in FIG. 5, to help guide foodstuff into the container and to keep processed foodstuff away from the mechanisms of the adaptor, the adaptor includes a cylindrical outlet chute 380 arranged between the container 310 and the support 365.

[0159] FIGS. 6a and 6b show a perspective and top view respectively of a portion of the adaptor 350. As best seen in FIGS. 6, the support 365 comprises several flanges 374 formed into the ring gear and spaced equally around the inner perimeter of the ring gear. As the ring gear rotates, the flanges 374 also rotate. The flanges are provided to support, from below, the cutting tool 100 which is available to rest directly upon the upper surface of the flanges or to engage with the flanges by allowing the flanges to slot into a cooperating slit in the cutting tool (such as the root of the gears of the engagement formation 108). In the latter case, a lip 370 extending inwardly from the ring gear instead supports the cutting tool from below.

[0160] The support 365 acts as a retaining member by means of a retaining wall 378 formed by inner surface of the ring gear which surrounds the perimeter of the cutting tool when in situ in the support. In this way, the retaining wall 378 permits the cutting tool only to move along or about axis 390.

[0161] FIG. 7 shows a schematic cutaway side view of the adaptor 350. Drive is transmitted by the transmission 359that is, the engagement formation 355, a first 359-1 and a second bevel gear 359-2, and the ring gear 365.

[0162] In more detail and as best seen in FIG. 7, the first bevel gear 359-1 is attached directly to the engagement formation 355, at an end of the engagement formation 355 nearest the ring gear 365. The second bevel gear 359-2 is orientated so as rotate about an axis that is parallel to axis 390 and perpendicular to the axis of rotation of the first bevel gear 359-1. The second bevel gear 359-2 extends between the first bevel gear 359-1 and the ring gear 365 and transmits drive between the first bevel gear 359-1 and the ring gear 365. The first and second bevel gears 359-1, 359-2 thereby pick-up and translate drive from the engagement formation 355 perpendicularly.

[0163] FIG. 7 also shows a drive safety interlock for use with an attachment for a food processor whereby the attachment picks-up drive from the food processor. For example, the attachment with which the safety interlock may be incorporated is shown as adaptor 350 in FIG. 7. As part of the interlock, the second bevel gear 359-2 is mounted on a spindle 346. The spindle 346 is arranged to travel in a channel (not shown) so as to allow the second bevel gear 359-2 to be raised and lowered. In an alternative example, where the second bevel gear 359-2 is not fixedly mounted to the spindle, the spindle is fixed, and instead the second bevel gear is journaled for travel along the spindle.

[0164] When the second bevel gear 359-2 is raised clear of the first bevel gear 359-1, the second bevel gear disengages from the first bevel gear 359-1 and/or the ring gear 365. In order for the interlock to operate effectively as a safety feature, the spindle 346 is provided with a coil spring 349 for urging the spindle, and hence the second bevel gear, away from the first bevel gear. The second bevel gear 359-2 is thereby disengaged from the first bevel gear when the spring is uncompressed.

[0165] The second bevel gear 359-2 is provided with a cooperating member 357 that is separate to the second bevel gear 359-2 and that protrudes upwardly from the second bevel gear 359-2. An upper surface of the member 357 is ramped. The member 357 extends through an aperture (not shown) in the frame 352 when the spring is uncompressed, such that the member 357 is exposed and proximate to bayonet flanges 358.

[0166] As best seen in FIGS. 8a and 8b, which show schematic partial exploded views of the adaptor 350 and stand mixer 400 (albeit with certain features omitted for clarity), the member 357 cooperates with the lid 360, and specifically with the bayonet grooves on the lid for coupling with bayonet flanges 358. In this way, as the lid 360 is locked to the adaptor 350 by engaging the bayonet coupling, at least one of the bayonet features on the lid 360 slides over the ramped surface of the member 357. When the lid is fully locked into the adaptor 350, the spindle 346 and second bevel gear 359-2 are depressed against the spring 349 and into engagement with the first bevel gear 359-1 and the ring gear 365. The lid 360 retains the second bevel gear depressed and in engagement with the first bevel gear and ring gear.

[0167] The member 357, which is offset from the axis of rotation of the second bevel gear 359-2, slides in an annular slot or runner (not shown) on the second bevel gear 359-2. Accordingly, the member 357 remains static as the second bevel gear rotates when the lid 360 is engaged.

[0168] As shown in FIGS. 7 and 8, the transmission 359, spring 349 and member 357 provide a safety interlock that prevents drive from being transmitted to the cutting tool 100 unless the lid 360 is correctly engaged with the adaptor 350. When the adaptor 350 is fitted to the stand mixer 400 without the lid 360 and the rotating drive 410 is operational, the engagement formation 355 will spin idly until the lid 360 is fitted, causing the first 359-1 and second bevel gears 359-2 to engage.

[0169] FIG. 9 shows a schematic view of a blocking member 905 for use with adaptors 250, 350 and/or the cutting tool 100. The adaptors 250, 350 are arranged to locate the cutting tool 100 beneath the inlet chute 262, 362 such that the cutting plate 100 receives foodstuff all around its axis of rotation 112; this allows the cutting tool 100, with the main blade 104 arranged across, at most, a radius of the plate 116, to cut foodstuff into a continuous strand (rather than separate slices every revolution).

[0170] The blocking member 905, which is available for fitment within, over or around inlet chutes 262, 362, limits the positions at which foodstuff may be inserted into the inlet chute and presented to the cutting tool. The blocking member 905 is dimensioned to block foodstuff from coinciding with, at least, the axis of rotation 112 of the cutting tool 100 when foodstuff is pressed against the cutting tool. For example, in FIG. 9, the blocking member is shown as being a substantially semi-circular plate centred on the axis of rotation 112.

[0171] In an alternative, the entire inlet chute 900 is replaceable with an inlet chute that offsets foodstuff from the axis of rotation 112.

[0172] Provision of the blocking member 905 to block axis 112 therefore adapts the cutting tool 100 for discontinuous cutting of foodstuff, such that the cutting tool 100 processes foodstuff once every revolution per cutting member, and not continuously within a revolution. This increases the functionality of the cutting tool 100 by allowing the cutting tool 100 to be used for slicing or grating functions, for example. In such cases, the comb-like blade 140 is removed from the cutting tool, leaving the main blade 104 to slice.

ALTERNATIVES AND MODIFICATIONS

[0173] In one example, the aperture 260 of the adaptor 250 has a diameter that is substantially the same as the diameter of the drive shaft 220, at the point where the drive shaft is received by the adaptor. In this way, the drive shaft 220 is journaled by the adaptor 260.

[0174] In one alternative the cutting members 104, 140 (and the reversed cutting member) comprise at least one of: a straight blade; a curved blade; a comb-like blade; a serrated blade; a julienne-type blade; and grater slots.

[0175] In another example, the cutting tool 100 is provided with a central prong or wedge on the plate 116 in place of the corer. The prong or wedge is arranged to split foodstuff as it is urged onto the plate and direct it outwardly toward the main blade 104 instead of through the aperture 132.

[0176] Although the plate 116 has been described as being a flat disk, it will be appreciated that other shapes of plate 116 are available. For example, a conic or domed cutting plate 116 is available with the cutting members conforming substantially to the plate 116.

[0177] In yet a further alternative, the support 256, 365 is provided with a hollow spindle cooperating with the aperture 260 which journals the cutting tool. In this case, the retaining wall 256-2, 378 may be foregone.

[0178] Where the adaptor 350 is arranged for use with a stand mixer 400 (as in FIGS. 4 to 7), the support 365 is available to be distinct to the transmission 359. For example, the support is available to be the lip 370, whereas the transmission 359 comprises a drive shaft provided adjacent the support, for example much as is shown in and described with reference to FIGS. 2 and 3; in this way user safety is improved since the moving parts of the transmission 359 may be smaller and less accessible.

[0179] It will be appreciated that although the use of bevel gears 359-1, 359-2 has been described in relation to the transmission mechanism 359 and the safety interlock mechanism, other forms of drive, such as belts, rotating shafts, worm gears and/or helical gears may alternatively be employed.

[0180] Alternatively, the adaptor is provided with any cooperating formation for engaging with the stand mixer so as to be supported by the stand mixer, such as a screw lock or lathing mechanism.

[0181] In an alternative, double-helix ribbons or strands are available to be output by providing the cutting tool 100 with a reversed cutting member on the same face of the plate 116 as the main blade 104, but orientated in an opposite direction and positioned diametrically oppositei.e. on the other side of the aperture 132 tothe main blade 104.

[0182] It will be understood that the present invention has been described above purely by way of example, and modifications of detail can be made within the scope of the invention.

[0183] Each feature disclosed in the description, and (where appropriate) the claims and drawings may be provided independently or in any appropriate combination.

[0184] Reference numerals appearing in the claims are by way of illustration only and shall have no limiting effect on the scope of the claims.