Concealed Patents (Class 312/217)
  • Patent number: 5303994
    Abstract: An interlock mechanism is provided for furniture units and the like of the type having two or more drawers, and functions to permit only one of the drawers to be opened at any given time, so as to avoid tipping, etc. The interlock includes a plurality of blocks slidably mounted in a vertical guide, with an actuator provided for each drawer. Each actuator comprises an arm having an upper portion pivotally mounted to the guide, and a lower portion with a notch shaped to selectively engage a pin on the associated drawer, such that closing and opening the drawer rotates the arm between corresponding unlocked and locked positions. Each actuator also includes a wedge pivotally connected with the lower portion of the arm, and slidably supported on the guide to reciprocate inbetween adjacent blocks when the associated drawer is opened, so as to lock closed all remaining drawers.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: April 19, 1994
    Assignee: Steelcase Inc.
    Inventor: Michael D. Elsholz
  • Patent number: 5236086
    Abstract: A hand gun container is disclosed which has a hand gun support secured within an interior cavity of the container. The support has an opening whereby a hand gun is inserted into the support. A locking bar is positioned within the container. The locking bar is movable between a first position across the opening in the support thereby preventing the hand gun from being withdrawn from the support, and a second position spaced from the opening thereby permitting the hand gun to be withdrawn from the support. A lock maintains the locking bar in the first position. The lock has a release switch activated by finger pressure such that the release switch must be kept depressed in order to draw the hand gun past the locking bar.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: August 17, 1993
    Assignee: Superior Concrete Pumping (1984) Ltd.
    Inventor: Richard K. MacTaggart
  • Patent number: 5176436
    Abstract: A drawer interlock structure having a channel-like plural station frame supporting at each station a cam on one side of the frame and an operably connected slider movable by the cam on the other side of the frame. A trip pin is attached to each drawer and is located in the opening and closing of each drawer to operably engage the cam. As the cam moves and the slider is displaced a taut strap of flexible material is displaced against a spring force at opening of any one drawer and the spring is limited in its extension by a blocker whereby no other drawers can be opened until closure of the one opened drawer and whereby simultaneous movement of plural drawers are blocked by the limitedly blocked spring loaded strap. The withdrawal of the slider from a positive block against the cam is prevented until the single opened drawer is closed. Simple locking of the structure is by means of a lock device disabling any movement of the strap.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: January 5, 1993
    Assignee: Quest Engineering, Ltd.
    Inventor: Terry L. Mitchell
  • Patent number: 5172967
    Abstract: A file storage apparatus (10) has a string or stack of drawer elements (14) vertically disposed along a side. A mechanical blocking shaft (28) is disposed on one side of the drawer (14) to allow only one drawer to be opened while blocking the remaining drawers preventing opening. A locking bar (62) is disposed on a second side of the drawers (14) for locking all of the drawers closed in response to an electrical access circuit (72) and for unlocking all of the storage units (14). An actuator member (72) interacts between the access circuit (72) and the locking bar (62) for moving the locking bar (62) between an unlocked and locked position.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: December 22, 1992
    Assignee: Meridian Incorporated
    Inventor: Gregory Pipe
  • Patent number: 5056877
    Abstract: A batching mechanism for an anti-tipping drawer mechanism rigidly attaches adjacent stacked drawers in the retracted position, thus mitigating the tendency to looseness in the mechanism. Preliminary withdrawal movement of any one drawer detaches the latching means and thereafter, further movement of the drawer actuates anti-tipping latching of the other drawers.
    Type: Grant
    Filed: May 8, 1990
    Date of Patent: October 15, 1991
    Assignee: Pundra Industries Limited
    Inventor: Florian Westwinkel
  • Patent number: 4966422
    Abstract: There is disclosed a latch mechanism for locking the drawers of items of furniture such as desks and file cabinets. The latch mechanism is manufactured of plastics using injection molding techniques. The mechanism includes an open sided housing having a oppositely directed pair of mounting flanges which extend from the opposite sides of the housing. A longitudinal slot is formed between the flange members and this slot slidably receives the latch member. The cavity of the housing receives a compression spring which protrudes from the open side of the cavity and is received in an aligned slot or through aperture of the latch member. The latch member has a forward and inclined ramp that is mounted opposite and adjacent to the upper cam post of a vertical slide member. The vertical slide member is received in a groove in a upright standard of the furniture, typically in a partition located between the center drawer and a vertically stacked set of lateral drawers of a desk.
    Type: Grant
    Filed: October 24, 1988
    Date of Patent: October 30, 1990
    Inventors: Russell E. Albright, Kenneth G. Green
  • Patent number: 4889396
    Abstract: A drawer interlock combination for a stack or tier of drawers and simplified to include a frame forming a receptacle guide for a plurality of rotors, one rotor for each drawer in the stack and the same frame guiding a plurality of actuators, one for each drawer through a path limited in both extremes of travel and displaceable by the action of only one of the rotors so that only a single drawer may be opened at a time and plural drawers cannot be opened concurrently. The device may be completely locked by simple blocking of the travel of the actuators to less displacement than by an single of the rotors. The structure is simple, economical and easy to install. The parts repeat themselves and provide excellent drawer stabilization with overall locking of all drawers.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: December 26, 1989
    Assignee: G. A. Richards Company
    Inventors: Terry L. Mitchell, Fredrick E. Sutton, Todd A. Sutton
  • Patent number: 4732434
    Abstract: An interlock assembly (20) for two or more horizontally sliding drawers (11, 12) in a cabinet (10) to prevent opening more than one drawer at a time is described. The interlock assembly is characterized by each drawer having rotating cam members (22, 23) with lobes (23a and 23b) and valleys (23c and 23d) which mate with corresponding lobes (26a, 27a) and valleys (26c, 27c) in blocks (26 and 27). When the cam member (23) is rotated the lobes (23a, 23b) and (23c and 23d) engage lobes (26a and 27a) of the blocks (26 and 27) to move the blocks and cam members as a train so as to engage the cabinet (10) to provide the interlock of the drawers.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: March 22, 1988
    Assignee: Metalworks, Inc.
    Inventor: Laude E. Hartrum
  • Patent number: 4684178
    Abstract: An improved central locking system for a desk includes a plurality of stop members mounted on a pivot rod attached to a panel adjacent a series of drawers. One stop member is pivoted in response to a pin drive actuator which moves when driven by a cam associated with a control drawer horizontally adjacent the other drawers.
    Type: Grant
    Filed: August 22, 1985
    Date of Patent: August 4, 1987
    Assignee: LLC Corporation
    Inventor: Clark E. Craig
  • Patent number: 4669767
    Abstract: In association with a conventional truck box, trailer or enclosure having a rear door communicating with the sides, top and bottom of the enclosure, a hollow holding sleeve is secured to the inside of the door with a securing plate fastened to one side of the enclosure and a locking plate to the other side. The plates include apertures which are aligned with the hollow holding sleeve and the locking plate communicates with the exterior of the enclosure. A locking bar extends through the aperture of the locking plate and the hollow holding sleeve and into the aperture of the securing plate. A locking device is mounted onto the locking plate to securely hold the locking bar in place. When the locking bar is in place, movement of the door is prohibited and the door can not be opened.
    Type: Grant
    Filed: March 13, 1986
    Date of Patent: June 2, 1987
    Inventor: Paul Leto
  • Patent number: 4637667
    Abstract: A lateral type file cabinet is provided with a predetermined number of file drawers suspended therein for movement between drawer open and drawer closed positions. Lock and interlock mechanisms are provided in the cabinet for coaction with the drawers to prevent withdrawal of more than one drawer at a time and to lock all drawers in the cabinet. The interlock mechanism includes a stack of interlock bars; their being one less bar than the number of drawers. Each bar includes an upper an a lower actuator block; with the blocks disposed for coaction with the radiused leading edge of an interlock track carried by each drawer. When a drawer is pulled from the cabinet the interlock track engages the appropriate actuator block to raise its bar and all interlock bars thereabove. The actuator blocks on the raised bars prevent movement of all drawers above the open one.
    Type: Grant
    Filed: May 16, 1985
    Date of Patent: January 20, 1987
    Assignee: Joyce International, Inc.
    Inventors: Iain K. Reid, Eric Staite, Doug Richmond, George Rumbelow
  • Patent number: 4557511
    Abstract: A latch assembly, for holding an object such as a door in either of two positions, includes a catch mounted in fixed position at each of the positions. A latch is mounted on the object and includes two latch portions, each of which is formed to engage and be trapped by one of the catches upon movement of the object toward one of the positions. A first of the latch portions is manipulable from one side of the object to release the other of the latch portions from its associated catch. Similarly, the other latch portion is manipulable from the other side of the object to release the first portion from its associated catch.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: December 10, 1985
    Assignee: InterMetro Industries Corp.
    Inventors: Robert J. Cohn, John J. Chapko
  • Patent number: 4478466
    Abstract: A storage system utilizing both shelving and drawers mounted between supports in which the drawers may be locked individually or in concert for security purposes. The shelves are mounted to the support members above a number of drawers slidably mounted between the support members. A locking channel, adjustable in length to accommodate the number of drawers desired, is slidably mounted within a similarly adjustable housing at the rear of the storage system to engage operatively pawls mounted at the rear of the drawers. The locking channel is moved vertically by a spring-biased locking mechanism causing openings in the locking channel to come into proper alignment so that the locking channel engages the pawls to lock the drawers in concert or disengages from the pawls to unlock the drawers in concert. The angular design of the pawl arms allows drawers remaining open during the locking procedure to be individually closed and locked thereafter.
    Type: Grant
    Filed: May 12, 1982
    Date of Patent: October 23, 1984
    Assignee: SPS Technologies, Inc.
    Inventors: Leonard R. Clark, David W. Meehl
  • Patent number: 4469382
    Abstract: A remote control locking mechanism is provided for a modular desk assembly, pedestals, cabinets and like assemblies which permits the various storage compartments to be moved about and yet still be locked and unlocked irrespective of their location relative to a remote control lock actuator. Each of the various storage compartments has a locking device attached thereto which is connected to the remote control lock actuator by a cable which is slidably encased within a sheath. The sheath has one end anchored at the particular storage compartment and its opposite end anchored at the remote control lock actuator. One end of the cable is connected to the locking device of the storage compartment and its opposite end connected to a moving device within the remote control lock actuator.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: September 4, 1984
    Assignee: Kimball International, Inc.
    Inventors: Mathew A. Slaats, Jay M. Henriott, Paul R. Hedinger, Steven F. Trinkel
  • Patent number: 4457569
    Abstract: A lock arrangement is provided for office furniture units, such as desks, credenzas and the like, that include one or more pedestals defining at least one closable compartment in the nature of a drawer, a cabinet, et cetera, having a mechanism to lock the compartment closed, and a top extending the length of the unit. The lock arrangement is particularly adapted for in-top installations, and comprises a primary lock mounted in the top, and a channel which opens downwardly from the lower surface of the top adjacent the forward edge thereof. A connector device is mounted within the channel, and mechanically interconnects the primary lock with the compartment lock mechanism, such that manipulation of the primary lock locks and unlocks the compartment. A removable cover assembly encloses the channel, and preferably comprises two covers which are positioned over opposite ends of the channel.
    Type: Grant
    Filed: March 26, 1982
    Date of Patent: July 3, 1984
    Assignee: Steelcase Inc.
    Inventor: Douglas Scheerhorn
  • Patent number: 4452498
    Abstract: A locking device for interlocking drawers in a file cabinet includes an elongated L-shaped locking member pivoted adjacent to an interior corner of the cabinet and cooperating with a fixed arm on each of the cabinet drawers so that withdrawal of any drawer pivots the L-shaped member to prevent the withdrawal of any other drawer.
    Type: Grant
    Filed: April 7, 1982
    Date of Patent: June 5, 1984
    Assignee: B & W Corporation
    Inventors: Ronald L. Wood, Jr., Robert J. Tempas
  • Patent number: 4441767
    Abstract: A file cabinet having drawers and doors and an anti-tip lock mechanism that simultaneously locks all closed doors and drawers when in a locking mode and that permits movement of a single drawer from its closed to its open position while simultaneously locking both the remaining unopened doors and all of the other drawers against movement from their closed to their open positions when in an unlocked mode.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: April 10, 1984
    Assignee: AVM Corporation
    Inventor: Forest G. Stark
  • Patent number: 4425013
    Abstract: A system for locking either all or all but one of the drawers of a file cabinet. A bar rides in a groove at the interior of the shell of the cabinet. A plurality of drawer locks is engaged to the bar, each drawer lock including inclined and vertical surfaces at its rear edge. A rail having a key end is positioned at the side of each drawer so that the blunt end of the key faces the inclined surfaces of an associated drawer lock when all drawers are closed. The engagement of the blunt end with the opposed inclined surface of a lock raises the bar so that the blunt ends of the rail members associated with the remaining drawers abut and are locked by the vertical surfaces of the associated drawer locks. A block at the top of the bar abuts the cylinder of a cabinet lock when extended to prevent the vertical movement of the bar, locking all drawers.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: January 10, 1984
    Assignee: Pacific Furniture Manufacturing Co.
    Inventor: Robert H. Killen
  • Patent number: 4397509
    Abstract: An arcade game in which the housing defines an opening on the front portion of the housing. A sliding panel which carries electronic circuitry is slid into and out of the housing, through the opening, along tracks. The front of the housing has a door for covering the opening, but this door is normally locked and can be unlocked only from inside the housing. To obtain access to unlock the door, the coin box closure on the front of the housing must be unlocked, enabling the operator to extend his hand into the interior of the housing to unlock the door.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: August 9, 1983
    Assignee: Universal Research Laboratories, Incorporated
    Inventors: Anthony J. Miller, Brian L. Poklacki
  • Patent number: 4396239
    Abstract: An interlock mechanism for use with a plurality of vertically stacked units such as disk drives wherein said mechanism allows only one unit to be withdrawn or extended from the stack at a time.
    Type: Grant
    Filed: March 10, 1981
    Date of Patent: August 2, 1983
    Assignee: Paradyne Corporation
    Inventor: Tom Wissman
  • Patent number: 4381877
    Abstract: A cabinet construction is disclosed featuring the utilization of spring-biased hinge pins for removably mounting one or more doors for swinging movement between cabinet storage compartment closed and open positions in combination with a security device for normally preventing access to such hinge pins for door removal purposes. The invention additionally features a novel door/hinge assembly.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: May 3, 1983
    Assignee: American Locker Security Systems, Inc.
    Inventor: Forest G. Stark
  • Patent number: 4355851
    Abstract: A file cabinet (10) including slidably mounted drawers (18) is provided with an interlock mechanism which prevents the simultaneous opening of two drawers. The interlock mechanism includes an elongate channel (24) having a fixed length and depth. Slidable within the channel (24) along the length thereof are blocks (42) and wedges (44). The blocks (44) include at least one end surface (48) which is at an acute angle relative to the bottom wall (28) of the channel (24). The wedge members (44) are displaceable relatively into and out of the depth of the channel. The wedge members have surfaces (52) complementary to and in sliding contact with the end surfaces (48) of the blocks. The length of the channel (28) is less than that of the combined length of all of the block (42) and wedge members (44) disposed therein and at least as long as the combined length of the block and one of the wedge members.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: October 26, 1982
    Assignee: Herman Miller, Inc.
    Inventor: Boyd C. Slusser
  • Patent number: 4303287
    Abstract: Initial opening movement of a drawer in a cabinet by cam action raises a locking bar to lock the other drawers closed. In so doing the locking bar rotates a pinion having an arm which stresses a spring carrying it past an over-center position to maintain the bar in locking position while the moving drawer travels to the fully open position. The end of the closure of this drawer by cam action returns the bar, arm and spring to their initial state. A key-lock mechanism can raise the bar to lock all the drawers shut. If the cabinet is tilted forward substantially, gravity causes a ball to run to a position to hold the pinion against rotation thereby preventing all the drawers from automatically becoming locked due to the bar running to the locking position under gravity or inertia.
    Type: Grant
    Filed: February 4, 1980
    Date of Patent: December 1, 1981
    Assignee: Vickers Limited
    Inventor: John F. Taplin
  • Patent number: 4303288
    Abstract: A merchandise cabinet having display and drawer bearing areas is equipped with a drawer locking apparatus comprising drawer mounted abutment means, a rigid locking frame slidably mounted for lateral movement into and out of engagement with the abutment means, and an engagement lever carried on the locking frame and extending into the path of an access door provided in the display area.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: December 1, 1981
    Assignee: The Columbus Show Case Company
    Inventor: William T. Aschinger
  • Patent number: 4298236
    Abstract: A safety lock system for vertically stacked slideably retained storage elements, such as file drawers. The system comprises one or more locking bars vertically slideably retained in alignment in a vertical support guide channel. Two or more cam elements are pivotally secured on a respective fixed pivot axis to the support guide channel adjacent an opposed end of each of the locking bars. Each of the cam elements have a cam portion retained in planar alignment with the locking bars and an activating arm portion for rotating the cam portion about the fixed pivot axis. A displaceable space is provided below each cam element portion defined between one of the locking bar opposed ends and the cam portion. An engaging member is secured to one or more of the storage elements.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: November 3, 1981
    Assignee: Artopex Inc.
    Inventor: Robert N. Laroche
  • Patent number: 4240685
    Abstract: A file arrangement includes a cabinet housing, a plurality of vertically stacked file elements with an interlock assembly carried by one cabinet lateral wall precluding the opening of more than one element at a time as the first opened drawer vertically displaces a roller on the assembly to block any displacement of similar rollers adjacent the remaining file elements. A separate lock bar assembly adjacent the opposite cabinet lateral wall includes a plurality of lock dogs engageable with the front of the file elements and vertically shiftable upon actuation of a lock mechanism. Operation of the lock mechanism and its associated lock bar assembly also actuates a transfer rod joining both assemblies to simultaneously and equally displace the interlock assembly and a plurality of lock dogs thereon to lock both sides of all file elements within the cabinet.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: December 23, 1980
    Assignee: GF Business Equipment, Inc.
    Inventor: Leo Terlecki
  • Patent number: 4099808
    Abstract: A security cabinet designed for use in the home for storage of guns or other valuable articles includes an upright generally rectangular enclosure of plate steel construction having an open front and with a rectangular door frame weldably secured to the walls of the enclosure at the open front side thereof to reinforce and strengthen the enclosure and provide a strong and unyielding supporting frame surrounding the door. A door, also of plate steel construction, is hingedly mounted in the door frame by recessed hinges which are located interiorly of the enclosure and inaccessible to tampering when the door is in the closed position. A locking bracket is welded to the door frame and has a portion which extends through an opening provided in the door and to which a lock is fastened for securing the door in the closed position. A gun rack is provided inside the cabinet, the gun rack being rotatably mounted to provide ready access to all of the guns inside the cabinet.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: July 11, 1978
    Assignee: ECO Industries, Inc.
    Inventors: Ervin Carvis Oakley, George Robert Bell, William Eugene Poole
  • Patent number: 4036541
    Abstract: A cabinet having an access opening and sliding panels each occupying more than slightly one half of said opening with notches aligned with each other at the base of each opening, a base for said cabinet comprising upper and lower base plates with a space therebetween, a relatively elongate rod having a finger section at its front end and secured near its rear end to the underside of the said upper base plate, the finger section extending into an aperture in the central front portion of said base plate disposed below the aligned notches in the panel, said finger section of the rod being accommodated in the notches when the panels are in closed position, a cross member secured at right angles to the rod intermediate the rod rearwardly of the finger section, a trim piece covering the space between the upper and lower base plates having a slot therethrough and a channel member forming a guideway with the slot extending toward the rear of the cabinet and secured to the front upper portion of the lower base plate,
    Type: Grant
    Filed: June 24, 1976
    Date of Patent: July 19, 1977
    Inventor: Seymour M. Kantor
  • Patent number: 3998508
    Abstract: A gang locking mechanism for use with a cabinet having a plurality of slidably mounted drawers includes a single drawer mounted control rod operatively connected at one end to a master lock supported at the front panel of one of the drawers. The other end of the control rod engages a pivot plate secured to the inner face of the rear wall of the cabinet when the drawer is in a closed position. Linkage members extend from the pivot plate and engage corner mounted locking bars. The locking bars are mounted for limited pivotal movement about their vertical axes and include a plurality of hook-like clips adapted to lock the drawers in a closed position.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: December 21, 1976
    Assignee: Steelcase, Inc.
    Inventor: Douglas Scheerhorn
  • Patent number: 3957324
    Abstract: A file-cabinet anti-tip device allows only one drawer to be withdrawn from a cabinet at a time. The device maintains cabinet-mounted drawer latches in drawer-unlocked positions when all of the drawers in the cabinet are closed, but moves the latches of the remaining drawers to drawer-locked positions in response to any one of the drawers being withdrawn from the cabinet. An actuating means includes a cabinet-mounted movable lock rod which is linked to the drawer latches, drawer-mounted cams and cabinet-mounted movable levers to move the lock rod in response to movement of the cams. The device of this invention can be easily integrated with conventional push-button-type file-cabinet locking mechanisms as well as combination-type locking mechanisms.
    Type: Grant
    Filed: March 26, 1974
    Date of Patent: May 18, 1976
    Assignee: Sperry Rand Corporation
    Inventors: Ralph L. Klenik, Jr., Ralph E. Dyar
  • Patent number: 3936108
    Abstract: A locking mechanism for file cabinet drawers having a receding front wall includes a vertically movable elongated rod with horizontally extending projections which is positioned adjacent the side walls of the drawers on one side of the file cabinet; a rotatable shaft supported beneath the bottom wall of each drawer and extending beyond the side walls of each drawer; and a locking member mounted on the shaft between each drawer side wall and the file cabinet casing. A camming surface on the locking member on the side of the cabinet adjacent the rod is engaged by the projection on the upwardly moving rod causing the shaft to rotate and thereby actuating both locking members into engagement with both sides of the receding drawer front wall. The locking member on the other side of the cabinet also engages a retainer element attached to the file cabinet casing.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: February 3, 1976
    Assignee: Oxford Pendaflex Corporation
    Inventor: John Alvin Chitester