Transitional electric can opener

Abstract

An electric can opener comprises an upper opening portion and lower base portion. The upper opening portion and the lower base portion are selectively attachable to and separable from each other. The upper opening portion and the lower base portion are operable as an upright countertop can opener when attached, and the upper cutting portion is operable as a walk-and-cut can opener when separated from the lower base portion.

Claims

1. An electric can opener comprising: an upper opening portion and lower base portion, the upper opening portion and the lower base portion being selectively attachable to and separable from each other, the upper opening portion including a motor and one or more batteries to selectively power the motor and the lower base portion selectively provides electrical power to the upper opening portion to charge the one or more batteries when the upper opening portion and the lower base portion are attached; a handle on the upper opening portion engaged to selectively lower a blade to pierce a can lid; a drive wheel on the upper opening portion driven by the motor; wherein the upper opening portion and the lower base portion are operable as an upright countertop electric can opener when selectively attached, the drive wheel rotating a can such that the can lid is cut by the blade; and wherein the upper cutting portion is operable as an electric walk-and-cut can opener when separated from the lower base portion, the drive wheel rotating the upper cutting portion and blade around a stationary can such that the can lid is cut by the blade; a magnet mounted on a cantilevered arm extending from the upper opening portion, the magnet securing the cut can lid to the upper opening portion.

2. The electric can opener of claim 1, wherein the lower base portion selectively provides electrical power to the upper opening portion via corresponding electrical contacts in the upper opening portion and in the lower base portion.

3. The electric can opener of claim 1, wherein the lower base portion comprises an AC power cord and an AC-to-DC converter to provide DC electrical power to the upper opening portion.

4. The electric can opener of claim 1, further comprising one or more latches for selectively securing the upper opening portion to the lower base portion.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) The foregoing summary, as well as the following detailed description of the disclosure, will be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the disclosure, there are shown in the drawings embodiments which are presently preferred. It should be understood, however, that the disclosure is not limited to the precise arrangements and instrumentalities shown. In the drawings:

(2) FIG. 1 is a perspective view of a prior art electric can opener.

(3) FIG. 2 is a perspective view of another prior art electric can opener.

(4) FIG. 3 is a perspective view of an electric can opener, according to one embodiment of the present disclosure.

(5) FIG. 4 is a front view of the electric can opener of FIG. 3.

(6) FIG. 5 is a rear view of the electric can opener of FIG. 3.

(7) FIG. 6 is a right side view of the electric can opener of FIG. 3.

(8) FIG. 7 is a left side view of the electric can opener of FIG. 3.

(9) FIG. 8 is a bottom view of the electric can opener of FIG. 3.

(10) FIG. 9 is a top view of the electric can opener of FIG. 3.

(11) FIG. 10 is a perspective view from the bottom and left of the electric can opener of FIG. 3 in a separated arrangement.

(12) FIG. 11 is a perspective view from the top and left of the electric can opener of FIG. 3 in a separated arrangement.

(13) FIG. 12 is a perspective view from the top and left of the separated upper portion of the electric can opener of FIG. 3.

(14) FIG. 13 is a perspective view from the bottom and left of the separated upper portion of the electric can opener of FIG. 3.

(15) FIG. 14 is a perspective view from the top and left of the separated lower portion of the electric can opener of FIG. 3.

(16) FIG. 15 is a perspective view from the bottom and left of the separated lower portion of the electric can opener of FIG. 3.

(17) FIG. 16 is a cutaway/sectional left side view of the electric can opener of FIG. 3.

(18) FIG. 17 is a block diagram of the electrical and control system of the electric can opener of FIG. 3.

DETAILED DESCRIPTION OF THE DISCLOSURE

(19) Certain terminology is used in the following description for convenience only and is not limiting. The words “lower,” “bottom,” “upper,” and “top” designate directions in the drawings to which reference is made. The words “inwardly,” “outwardly,” “upwardly” and “downwardly” refer to directions toward and away from, respectively, the geometric center of the device, and designated parts thereof, in accordance with the present disclosure. Unless specifically set forth herein, the terms “a,” “an” and “the” are not limited to one element, but instead should be read as meaning “at least one.” The terminology includes the words noted above, derivatives thereof and words of similar import.

(20) Embodiments of the present disclosure comprise an electric can opener having selectively separable upper and lower housing portions. When the upper and lower housing portions are engaged, the electric can opener of embodiments of the present disclosure looks and functions like a conventional countertop electric can opener. However, when the upper housing portion is separated from the lower housing portion, the upper housing portion looks and operates like a walk-and-cut can opener. In this regard, the electric can opener of embodiments of the present disclosure may be used to open any size can. The electric can opener of embodiments of the invention may be termed a transitional electric can opener, as the device is capable of transitioning between a countertop can opener and a walk-and-cut can opener.

(21) Referring to the drawings in detail, wherein like numerals indicate like elements throughout, FIGS. 3-17 illustrate an electric can opener of embodiments of the present disclosure. The electric can opener 50 of embodiments of the present disclosure comprises an upper housing portion or head 52a and a lower housing portion or base 52b. The upper housing portion 52a comprises a handle 54 that, when pushed down by a user, lowers a blade 56 and thereby causes the blade 56 to pierce the lid of a can (not illustrated). A drive wheel 58 is rotated by an electric motor 96 within the upper housing portion 52a (the motor 96 rotates the drive wheel 58 via a drive train 98, the drive train typically comprises a plurality of gears or the like as is conventionally known), thereby rotating the can (when functioning as a countertop can opener) or moving the upper housing portion 52a about the can (when functioning as a walk-and-cut can opener) so that the lid is cut. A magnet 60 attracts the cut lid to keep the lid from falling into the contents of the can. The magnet 60 is supported in the desired location by a cantilevered arm 62 projecting outward from the upper housing portion 52a. The motor is powered via one or more batteries 94 contained within the upper housing portion 52a.

(22) As illustrated in FIGS. 3-9, the electric can opener 50 functions as a countertop can opener when the upper and lower housing portions 52a, 52b are attached. As illustrated in FIGS. 10-15, the upper housing portion 52a is separable from and may be lifted off the lower housing portion 52b. The upper housing portion 52a of the electric can opener 50 functions as a walk-and-cut can opener when the upper housing portion 52a is separated from the lower housing portion 52b.

(23) The lower housing portion 52b has a flat, relatively wide bottom 64 such that the lower housing portion 52b is adapted to sit on a countertop or other flat surface and support the upper housing portion 52a at a suitable height for opening a desired number of different can sizes (but typically not all can sizes) when functioning as a countertop can opener. Because the electric motor 96 and battery(ies) 94 must be in the upper housing portion thereby increasing the mass of the upper housing portion, additional mass (not illustrated) may be added to the lower housing portion to provide stability to the device when the upper and lower housing portions are joined.

(24) Because the can is held and rotated by the upper housing portion (when the upper and lower housing portions are joined), the upper and lower housing portions should be securely (but removably) attachable to each other to prevent the housing portions from unintentionally detaching from each other. Any suitable mechanical attachment mechanism may be used to securely but removably attach the upper and lower housing portions, such as a sliding latch, one or more clips, or the like. Alternatively, it may be possible to use a friction or compression fit between the upper and lower housing portions.

(25) The figures illustrate one possible attachment mechanism for selectively attaching and detaching the upper and lower housing portions 52, 52b. The upper housing portion 52a has a rounded bottom 70 that is selectively received relatively snugly into a cavity 80 at the top end of the lower housing portion 52b. To help ensure proper alignment between the upper and lower housing portions 52, 52b and to help prevent lateral movement between the upper and lower housing portions, one or more mating pins 86 (four are illustrated, but more or fewer may be used) may project upward from a floor 82 of the cavity 80 of the lower housing portion 52b. When the upper and lower housing portions 52, 52b are selectively attached, the mating pins 86 are received by corresponding mating holes 76 defined in a flat floor 72 of the upper housing portion 52a.

(26) To hold the upper and lower housing portions 52, 52b together, one or more latches 84 (three are illustrated, but more or fewer may be used) may project upward through holes 90 defined in the floor 82 of the cavity 80 of the lower housing portion 52b. The holes 90 are larger than the latches 84 to enable lateral (front-back) movement of the latches when attaching and detaching the upper and lower housing portions 52, 52b. The latches 84 each have a lateral projection at the top to enable each latch 84 to selectively engage a corresponding hole 74 defined in the flat floor 72 of the upper housing portion 52a. The latches 84 move in unison toward the front of the device when a user depresses a detach button 68 on the back side of the lower housing portion 52b (the directional movement of the latches and the location of the detach button may vary) to disengage the latches 84 and enable the upper and lower housing portions to be detached. A spring 92 or similar biasing mechanism biases the latches 84 toward the rear of the device into the positions in which the latches 84 engage the corresponding holes 74. The top ends of each latch 84 may be rounded/angled as shown such that pushing the upper and lower housing portions 52, 52b together forces the latches 84 forward to enable the upper and lower housing portions to fully mate. In this regard, the detach button 68 typically does not need to be depressed to enable the upper and lower housing portions 52, 52b to be attached.

(27) As the motor is powered via one or more batteries contained within the upper housing portion 52a, it may be desirable to provide the ability to charge the batteries. In this regard, the upper and lower housing portions 52a, 52b may contain the necessary components to charge the batteries when the upper and lower housing portions are attached to each other. The lower housing portion 52b may comprise a power cord that may be plugged into an AC household electrical outlet, a suitable AC-to-DC converter, and any suitable charging ports, contacts, or the like that would mate with corresponding charging ports, contacts, or the like on the upper housing portion 52a when the upper and lower housing portions are attached to each other. Any suitable charging mechanism may be used to enable the batteries in the upper housing portion 52a to charge when the upper and lower housing portions are attached to each other. For example, the lower housing portion 52b may have a male charging connector that engages a female charging port on the upper housing portion 52b (or vice versa). As another example, the upper and lower housing portions may have corresponding magnetic inductance coils to enable wireless charging when the upper and lower housing portions are attached to each other. As yet another example, the upper and lower housing portions may have corresponding open charging contacts (which may be spring loaded on one or both of the upper and lower housing portions) that come in contact when the upper and lower housing portions are attached to each other. Optionally, the charging connection between the upper and lower housing portions may be integrated with the mechanical attachment mechanism used to securely attach the upper and lower housing portions.

(28) As illustrated in the block diagram of FIG. 17 (the electrical connections are primarily illustrated schematically for simplicity), AC line voltage is received in the lower housing portion 52b via a power cord 66. The AC voltage is converted to DC voltage via a transformer 100, which may for example provide a 3 volt, 200 milliamp DC output to electrical contacts 88. The lower portion electrical contacts 88 project upward through holes defined in the floor 82 of the cavity 80. When the upper and lower housing portions 52, 52b are attached, the lower portion electrical contacts then also project through holes 78 defined in the floor 72 of the upper housing portion 52a and come in contact with upper portion electrical contacts 102, thereby providing DC power to the upper housing portion 52a to charge the battery 94. When a user depresses the handle 54, a switch 106 is closed to provide DC power from the battery 94 to the motor 96 to operate the can opener 50. A light emitting diode (LED) printed circuit board (PCB) 104 may provide an indication of charging status (e.g., blinking light if the battery is charging and solid light if the battery is fully charged).

(29) It will be appreciated by those skilled in the art that changes could be made to the embodiments described above without departing from the broad inventive concept thereof. It is understood, therefore, that this disclosure is not limited to the particular embodiments disclosed, but it is intended to cover modifications within the spirit and scope of the present disclosure as defined by the appended claims.