Portable drawer and door lock for retrofit applications
09650812 ยท 2017-05-16
Assignee
Inventors
Cpc classification
E05B2047/0091
FIXED CONSTRUCTIONS
Y10T70/5978
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T292/096
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T70/7113
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T70/5128
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T70/5097
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T70/8541
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
E05B2047/0023
FIXED CONSTRUCTIONS
Y10T70/8838
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T70/5111
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T70/7102
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T70/7124
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10T292/1021
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
International classification
E05B47/00
FIXED CONSTRUCTIONS
E05B47/02
FIXED CONSTRUCTIONS
Abstract
A lock for retrofitting onto a drawer or a door includes a drawer having a front panel. The drawer slidingly engages an item of furniture having a front face that is positioned above the front panel when the drawer is closed. A bracket has a vertically disposed flat front plate, a horizontally disposed flat top plate, a vertically disposed fiat back plate, and a horizontally disposed motor platform that extends horizontally into an interior of the drawer. A motor having an output shaft is mounted on the motor platform. A latch supported by the motor platform is engaged by the output shaft. The latch is retracted when the drawer is unlocked and is extended to engage an interior side of the front panel of the furniture item when the drawer is locked.
Claims
1. A locking mechanism comprising: a bracket having a front portion defining a top front edge and a first plane, a back portion defining a top back edge and a second plane, and a top portion defining a third plane and connecting the top front edge of the front portion and the top back edge of the back portion, wherein the front portion, top portion and back portion of the bracket define an empty space between the first plane and the second plane beneath the third plane; a moveable latch and latch operator disposed in a housing connected to the back portion of the bracket and external of the empty space; a user interface operatively disposed on the front portion of the bracket and external of the empty space, wherein the user interface is in electrical communication with the latch operator to control movement of the latch.
2. The locking mechanism of claim 1, wherein the empty space of the bracket is adapted to receive and mount the bracket on an access panel of an enclosure to be locked, wherein only the access panel fills the empty space.
3. The locking mechanism of claim 2, wherein the user interface is a keypad mounted to the front portion of the bracket, substantially flush with an exterior face of the access panel.
4. The locking mechanism of claim 2, wherein the front portion of the bracket is adapted to slidably overlie a section of a front surface of the access panel, the top portion of the bracket is adapted to slidably overlie a top edge of the access panel, and the back portion of the bracket is adapted to slidably overlie a section of an interior surface of the access panel.
5. The locking mechanism of claim 2, wherein the empty space is unpenetrated except by the access panel when in place on the access panel.
6. The locking mechanism of claim 2, wherein the bracket is adapted to be freely movable on the access panel in an unsecured manner while in use on the access panel.
7. The locking mechanism of claim 1, wherein the housing is adjustably mounted to the back portion of the bracket via an adjustment bracket.
8. The locking mechanism of claim 1, wherein the latch operator comprises a latch actuator, control circuitry, and a power supply.
9. A locking mechanism for retrofitting onto an openable enclosure having at least one access panel and defining an interior and an exterior, the locking mechanism comprising: a generally U-shaped bracket having at least a first surface and a second surface, wherein the generally U-shaped bracket defines a space adapted to receive and freely mount the bracket on a top edge portion of the access panel of the enclosure; a user interface operatively positioned on the first surface of the bracket; and a moveable latch and latch operator positioned in a housing connected to the second surface of the bracket; wherein the user interface is in electrical communication with the latch operator to control movement of the latch between a locked position and an unlocked position.
10. The locking mechanism of claim 9, wherein the space of the bracket is adapted to receive and mount the bracket on an access panel of a drawer or a door, wherein only the access panel fills the space.
11. The locking mechanism of claim 9, wherein the first surface of the bracket is adapted to slidably overlie a section of a front surface of the access panel, and the second surface of the bracket is adapted to slidably overlie a section of an interior surface of the access panel.
12. The locking mechanism of claim 9, wherein the space is unpenetrated except by the edge portion of the access panel when in place on the access panel.
13. The locking mechanism of claim 9, wherein the bracket is adapted to be freely movable on the edge portion of the access panel in an unsecured manner while in use on the access panel.
14. The locking mechanism of claim 9, wherein the housing is adjustably mounted to the second surface of the bracket via an adjustment bracket.
15. The locking mechanism of claim 9, wherein the latch operator comprises a latch actuator, control circuitry, and a power supply.
16. A method for retrofitting a locking mechanism onto an openable enclosure having at least one access panel and defining an interior and an exterior, comprising the steps of: removably sliding a generally U-shaped bracket, having a user interface operatively positioned on a first surface of the bracket and a moveable latch and latch operator positioned in a housing connected to a second surface of the bracket, over a top edge portion of the access panel of the enclosure; and controlling movement of the latch between a locked position and an unlocked position via the user interface communicating with the latch operator electronically.
17. The method of claim 16, wherein the access panel is one of a front panel of a drawer and a door.
18. The method of claim 16, wherein the first surface of the bracket is adapted to slidably overlie a section of a front surface of the access panel, and the second surface of the bracket is adapted to slidably overlie a section of an interior surface of the access panel.
19. The method of claim 16, wherein the bracket defines an empty space which is unpenetrated except by the edge portion of the access panel when in place on the access panel.
20. The method of claim 16, wherein the bracket is freely movable on the edge portion of the access panel in an unsecured manner while in use on the access panel.
21. The method of claim 16, further comprising the step of removing the bracket from the access panel solely by lifting the bracket, and repeating the steps of claim 16 with respect to another access panel.
22. The method of claim 16, further comprising the step of adjustably mounting the housing to the second surface of the bracket via an adjustment bracket.
23. The method of claim 16, wherein the latch operator comprises a latch actuator, control circuitry, and a power supply.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) For a fuller understanding of the invention, reference should be made to the following detailed description, taken in connection with the accompanying drawings, in which:
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
(26)
(27) There are two common types of drawers and two common types of cabinets that slideably receive said drawers in well-known ways.
(28) The first type of drawer is an external drawer and is depicted in
(29) The first type of cabinet has a single panel and is depicted in
(30) Thus it is understood that
(31) A latch positioned so that it substantially abuts the interior surface of cabinet face 13b in
(32) A latch that abuts the interior surface of cabinet face 13b in
(33) In other words, in order to provide a locking mechanism that fits almost all drawers, a latch is positioned a predetermined distance from the interior side of front panel 12 of an externally-mounted drawer 10 so that the latch will be flush with the interior surface of cabinet face 13b when said latch is deployed, there being no need for a spacer in that
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(35) More particularly, bracket 18 includes vertically disposed flat front plate 20 that overlies in part the front, exterior surface of front panel 12 of drawer 10, horizontally disposed flat top plate 22 that overlies the horizontal top edge of drawer front panel 12, vertically disposed flat back plate 24 that overlies part of the back or interior surface of front panel 12, horizontally disposed platform 26 that extends horizontally into the interior of the drawer for a predetermined distance, and vertically disposed wall 26a to which is mounted motor 28. Flat back plate 24 may be lengthened to share a common vertical extent with flat trout plate 20 so that bracket 18 is even more snugly and stably secured to front drawer panel 12.
(36) In the embodiment of
(37) In the embodiment of
(38) However, in order to accommodate all configurations, the novel lock assembly includes a spacer that can be rotated to provide a flush surface when no extension is needed. In
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(40) In
(41) Latch 30 extends through an opening formed in secondary plate 32 that extends horizontally into the interior of the drawer in parallel relation to motor platform 26 in vertically spaced relation thereto. Secondary plate 32 provides support for latch 30 when said latch is in its extended position. Without secondary plate 32, a user could pull on the drawer with great force and perhaps cause latch 30 to bend away from cabinet panels 13a, 13b, allowing the drawer to open.
(42) There are numerous ways to extend and retract latch 30 and all of said ways are within the scope of this invention. For example, motor 28 could be provided in the form of a linear motor in linear alignment with latch 30 as depleted in
(43) Spring 36 may be positioned between motor platform 26 and motor 28 as depicted in
(44) A rack and pinion arrangement is depicted in
(45) In yet another embodiment, depicted in
(46) No spacer is depicted In
(47) Spacer 44 is disclosed in greater detail in
(48) Flat top plate 46 is T-shaped and has first arm 46a having no length so that it is flush with a first sidewall of latch 30, a second arm 46b that extends three eighths of an inch () beyond a second sidewall of latch 30, a third arm 46c that extends five eighths of an inch () beyond a third sidewall of latch 30, and a fourth arm 46d that extends one and three eighths of an inch (1) beyond a fourth sidewall of latch 30.
(49) When exterior drawer 12 abuts the exterior surface of cabinet face or wall 13a, as depicted in
(50) When an exterior drawer abuts first panel face 13a which is reinforced by second panel face 13b, as depicted in
(51) When a flush-mounted drawer is co-planar with cabinet lace 13a, as depicted in
(52) When a flush-mounted drawer 12 is co-planar with first cabinet face or wail 13a which is reinforced by second cabinet face or wall 13b, as depicted in
(53) In a less versatile alternative spacing means for accommodating cabinet faces of varying thicknesses, right-angled spacers of various sizes may be employed, one of such spacers being denoted 50 in
(54) Vertical part 50a of said spacer is received in bore 42 formed in latch 30 and the horizontal part extends beyond the sidewall of latch to the nearest cabinet face by five-eighths of an inch () for a first spacer in the embodiment of
(55) The horizontal part extends one and three-eighths of an inch (1) for a spacer in the embodiment of
(56) The horizontal part extends five-eighths of an inch () for a spacer in the embodiment of
(57) The structure of
(58) More particularly, bracket 18 in the embodiment of
(59) Electrical leads 29 provide electrical communication between motor 28 and a remote source of electrical power.
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(61) The structure of
(62) The structure of
(63) As best understood by comparing
(64) Another embodiment of bracket 18 is depicted in
(65) Motor mount bracket 52 is provided as a separate piece that includes horizontal part 52a and vertical part 52b. Vertical part 52b overlies vertically disposed flat back plate 24b when bracket 18 is assembled. This increases the structural integrity of bracket 18. Opening 60a formed in bracket front wall 20 receives program set button 60, disclosed below in connection with
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(67) A program set button 60 is also provided to activate the unit. It projects towards front panel 12 from the interior face of control housing 54 and is spring-loaded so that it is depressed when control housing 54 is placed into its operative position relative to said front panel as depicted in
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(69) The output shaft of motor 28 may be adapted to rotate ninety degrees (90.degree.) in a first direction when motor 28 is activated by an extend latch signal and ninety degrees (90.degree.) in a second direction opposite to said first direction when the motor is activated by a retract latch signal. Such motion of latch 30 is indicated in
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(72) Instead of a cabinet frame, the latch of the novel structure may also engage a door jamb or wall when extended.
(73) The structure of the invention is not changed when the novel structure is used on a door instead of a drawer. Nor does the structure change when the latch engages a door jamb or a wall as distinguished from a cabinet face.
(74) For example, the drawer-locking bracket having a vertically disposed flat front plate adapted to overlie a predetermined section of the front surface of a front panel, a horizontally disposed flat top plate adapted to overlie a horizontal top edge of said front panel, and a vertically disposed flat back plate adapted to overlie a predetermined section of an interior surface of the single front panel, is the same bracket even when oriented for use on a door so that a horizontal surface becomes a vertical surface.
(75) In an alternate embodiment shown, in
(76) Additionally, the enclosure located on the interior side of the drawer or door is adjustably mounted to bracket 18 whereby this internal enclosure which houses the latch and latch operator is adjustable to move vertically.
(77) It will be seen that the advantages set forth above, and those made apparent from the foregoing description, are efficiently attained. Since certain changes may be made in the above construction without departing from the scope of the invention, it is intended that all matters contained in the foregoing description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.