Spring Devices Patents (Class 292/DIG61)
  • Patent number: 6129395
    Abstract: A laptop computer includes a base member and a lid member pivotally attached to the base member. A latch member is mounted in the lid member. The latch member includes a top, a bottom, and opposite sides. A hook member protrudes from the top of the latch member. A spring retaining member is positioned adjacent the bottom of the latch member. A pair of flexible snap-in members are positioned on the opposite sides. A first one of the flexible snap-in members is positioned on a first one of the sides and a second one of the flexible snap-in members is positioned on a second one of the sides. The spring retaining member is positioned between the flexible snap-in members. The base member includes a receiver for receiving the hook member.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: October 10, 2000
    Assignee: Dell USA, L.P.
    Inventors: Maria Carmen Schlesener, Mark Ganninger
  • Patent number: 6076869
    Abstract: A pressing and latching structure for a notebook-type computer screen, includes a pressing section disposed on the computer screen and a latching section disposed on a main body of the computer. By pressing the pressing section with one hand, the computer screen is unlatched from the main body, permitting the computer screen to be easily pivoted up from the main body.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: June 20, 2000
    Assignee: Compal Electronics, Inc.
    Inventors: Ying-Hu Chen, Po-An Lin
  • Patent number: 6070921
    Abstract: A lift-gate dual latch mechanism utilizing both a primary spring and an auxiliary spring operates to provide the additional force needed to release a striker member from both stop positions of a dual latch. Without the auxiliary spring as mentioned above, the lift-gate, being a heavy member typically stays in the latching mechanism when the lift-gate key is actuated to the open position. This requires additional lift forces, such as added springs between the lift-gate and the back panel of the vehicle to open the lift-gate from the mandated second lock position. Gas cylinders are shown to assist the opening of the lift-gate when required.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: June 6, 2000
    Assignee: Ford Global Technologies, Inc.
    Inventor: Anthony Jerome Valasin
  • Patent number: 6007119
    Abstract: A shear-type electromagnetic lock is disclosed whose armature can approach the electromagnet from any transverse direction, which can be mounted in any orientation with respect to gravity, and which does not require any door position sensing means. The armature includes a pair of standoffs in the form of conically projecting buttons affixed thereto, the buttons projecting from the plane of contact between the armature and the electromagnet. The buttons have a base angle of 60-80 degrees adjacent the armature, and an angle of 45 degrees distal from the armature, and terminate in a smoothly rounded point. The armature is mounted to a sub-plate via counteracting springs such that the armature "floats" on the sub-plate, with the distance between the armature and the sub-plate being adjustable via adjusting screws.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: December 28, 1999
    Assignee: Securitron Magnalock Corp.
    Inventors: Thomas E. Roth, Vincent J. Frallicciardi
  • Patent number: 5967572
    Abstract: A vehicle door lock control arrangement includes a spring lock and an external actuator which is releasably connected to a release lever on the lock side. The release lever can be pivoted between a rest position and a release position against the force of a first spring to act on a pawl which normally retains the lock in its locked position. A further spring is also provided which prevents the lock from being partially released when it is connected to the external actuator. For this purpose, the further spring normally holds the release lever in the rest position but its connection to the release lever is automatically released during the initial actuation of the release lever.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: October 19, 1999
    Assignee: Volkswagen AG
    Inventors: Drago Sajfert, Dieter Meyer
  • Patent number: 5934115
    Abstract: A lock assembly is formed from a two-piece plastic unit that is held together and to the compartment door by a planar lanced metal spring. The latch projection is ramped relative to the latch retainer slot within the compartment door to cause the latch piece to become jammed within the retainer slot in the event the door is subjected to severe internally-generated gas pressures.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: August 10, 1999
    Assignee: General Electric Company
    Inventors: Richard E. Bernier, Kevin F. Nolan, Michael Nanney
  • Patent number: 5934716
    Abstract: A sliding-action slam latch for securing a door panel, especially a hinged door panel, in closed position with a latch body constructed of one piece and carrying a spring which is installed therein; the latch being installed in a single opening in the door panel and is self-retained therein. The latch operates by spring-biased sliding action to engage the door frame or striker place. The spring bias is provided by a separate spring member and the latch is further provided with a spring guide to facilitate installation of the spring into the latch. A method of assembly of the latch is also provided.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: August 10, 1999
    Assignee: Southco, Inc.
    Inventors: Stefan M. Koveal, Leo R. Knapp, III
  • Patent number: 5897148
    Abstract: A door latch for latching the vehicle door in the closed position includes a fork bolt pivotally mounted on the latch housing for movement between the latching position engaging a striker in an unlatching position to unlatch from the striker and permit opening of the door. A detent lever is pivotally mounted on the latch housing for movement between an engaging position engaging the fork bolt in its latching position and a disengaging position disengaged from the fork bolt to permit pivoting of the fork bolt to its unlatching position. A spring acts between the detent lever and the latch housing to urge the detent lever to the engaged position. A catch member is provided to retain the detent lever in the disengaged position and block pivoting movement of the detent member to the engaging position in response to absence of the spring.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: April 27, 1999
    Assignee: General Motors Corporation
    Inventors: Frank Joseph Arabia, Jr., Donald Michael Perkins
  • Patent number: 5887465
    Abstract: A torsion spring positioning device of a cylindrical lock includes a spindle outer casing through which a spindle extends and the spindle outer casing has two protrusions extending radially inward from an inner periphery thereof. The spindle has two slots defined in a periphery thereof and two stops extending radially outward from the periphery thereof so that two legs of the torsion spring respectively abut an end of the corresponding stop and an end of the corresponding protrusion. A washer is mounted to the spindle and has two notches defined in an outer periphery thereof so as to respectively receive the protrusions. A C-shaped clamping member is mounted to the spindle and has two stubs extending radially inward from an inner periphery thereof so as to be received in the slots.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: March 30, 1999
    Inventor: Mu-Lin Shen
  • Patent number: 5857720
    Abstract: The present invention is related to an opening device for a microwave oven door. A hook is moved up and down to open/close the door. A swing lever moves the hook upwardly when swinging around a swing shaft at a predetermined angle. An elastic piece is protrudingly formed from an inside of the microwave oven to the swing lever for supporting the swing lever through one direction. By this construction, the elastic piece is deformed because the swing lever is swung. This bending restoring force restores the push button and swing lever to their initial positions, when the push button is released. As a result, the push button is restored without special spring part. Therefore, the number of parts is decrease, and the production cost is lowered. Also, the assembling work is improved, since the elastic piece is produced with swing lever integrally.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: January 12, 1999
    Assignee: Daewoo Electronics, Co. Ltd.
    Inventor: Sang-Jin Kim
  • Patent number: 5820178
    Abstract: A retainer for preventing abrasion of a lock spindle of a lock mechanism by a torsion spring used to return the lock assembly the center position. The lock mechanism includes an axial spindle operably connected to the knob and the lock bolt for selective operation. The torsion spring which returns the lock assembly to the center or at-rest position is coaxially mounted about the spindle. The retainer includes tabs disposed between the spring and the spindle to prevent contact therebetween and thereby eliminate abrasion of the spindle by the spring which can result in premature failure of the lock mechanism.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: October 13, 1998
    Assignee: Baldwin Hardware Corporation
    Inventors: Philip C. Ellis, Leslie A. Meck
  • Patent number: 5813793
    Abstract: A locking mechanism for facilitating connection between a first housing and a second housing. The locking mechanism mounted in the mounting region of the second housing and includes a plunger mounted for movement up to an extended position, a biasing device urging the plunger toward the extended position, a catch spring, and a release button having a ramp, such release button being mounted on the second housing for back and forth movement in a direction transverse to the direction of the plunger and along a path that brings the ramp into contact with the catch spring when the release button is moved forward.
    Type: Grant
    Filed: January 13, 1997
    Date of Patent: September 29, 1998
    Assignee: Digital Equipment Corporation
    Inventor: Allan Scott Baucom
  • Patent number: 5735556
    Abstract: A cylindrical lockset includes a latchbolt unit, a chassis assembly, a pair of spring cassettes and a pair of levers. The chassis assembly has a housing, a retractor disposed in the housing and connected operably to the latchbolt unit, and a pair of rollback sleeves extending from opposite sides of the housing. Each of the rollback sleeves includes a tubular body which is formed from a bent steel plate with adjoining longitudinal edges and which has a front end coupled operably with the retractor. Each of the spring cassettes is coupled operably to a respective one of the rollback sleeves. Each of the levers is mounted on a respective one of the rollback sleeves. The chassis assembly further includes a reinforcing ring sleeved on the front end of the tubular body of at least one of the rollback sleeves to force the adjoining longitudinal edges of the tubular body toward each other to prevent prying open of the rollback sleeve.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: April 7, 1998
    Assignee: Kolik Enterprise Co., Ltd.
    Inventor: Eric Chan
  • Patent number: 5666833
    Abstract: A reinforcing apparatus for a lever handle of a door lock includes a housing fixed to a door and provided around a driving shaft of the door lock. The housing has a wall transverse to the driving shaft. The wall has a hole formed therethrough for passage of the driving shaft. A rotary member is mounted in the housing for rotating simultaneously with the driving shaft. The rotary member is sleeved on the driving shaft and has an engaging plate which projects axially from an outer peripheral edge thereof. A coiled spring is provided around the rotary member for biasing the rotary member to return and maintain the lever handle at its original unoperated position after the rotary member is rotated by the lever handle. The coiled spring has two legs extending radially outwardly to abut against the engaging plate. One of the legs is displaceable by the engaging plate. The housing further includes a stopping unit provided on the wall thereof.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: September 16, 1997
    Assignee: Tong-Lung Metal Industry Co., Ltd.
    Inventors: Sheen-Youl Gao, Rong-Faa Wu, Ming-Shyang Chiao, Cheng-Wen Lai, San-Yi Lin, Ching-Chuan Kuo, Lan-Kun Don
  • Patent number: 5664811
    Abstract: A release mechanism for use with fuel filler door latch systems that provides superior control of door movement during the entire service life of the motor vehicle. The biasing mechanism of the present invention includes a kick-out spring that acts directly against the striker bar. As such, the kick-out spring is not exposed to over-stressing and does not cause undue wear of the automobile body. The kick-out spring is a leaf spring having a first end that is secured to the housing, an intermediate section routed between posts extending outwardly from the housing, and a cantilevered second end that is oriented to be engaged and resiliently deflected by the striker bar when the fuel filler door is moved toward its closed position. In the closed position, the striker bar forcibly biases the second end of the kick-out spring to a deflected position.
    Type: Grant
    Filed: April 12, 1995
    Date of Patent: September 9, 1997
    Assignee: Lectron Products, Inc.
    Inventors: Charles R. Martus, Douglas S. Lanyk
  • Patent number: 5628216
    Abstract: A locking device is disclosed, comprising a locking mechanism having a locked position and an unlocked position, a hollow plunger member having a central axis, the hollow plunger member being engaged with the locking mechanism to move the locking mechanism alternatively into the locked and unlocked positions upon reciprocating linear motion of the hollow plunger member in first and second directions along its central axis, and a motor having a shaft disposed coaxial with the central axis of the hollow plunger member is disclosed. In one embodiment, the locking device further comprises a spring having first and second ends, the first end being fixed to the motor shaft, and a pin fixed to the hollow plunger member for engaging the second end of the spring such that when the motor shaft rotates in a third direction the hollow plunger member moves in the first direction and when the motor shaft rotates in a fourth direction the hollow plunger member moves in the second direction.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: May 13, 1997
    Assignee: Schlage Lock Company
    Inventors: Khurshid A. Qureshi, Ilia Petkov, Nasir Uddin
  • Patent number: 5529354
    Abstract: A latch apparatus includes a spring pack assembly for returning a latch to its normal non-use position. The spring pack assembly includes a holder portion and a cap for retaining a torsion spring. The holder portion includes retaining members and an annular member extending upward from the base of the holder for retaining and positioning the torsion spring. The adapter portion extends opposite the retaining members and annular member to receive a spindle for actuating the handle. The spring pack assembly inserts under a latch plate on the surface of the door and can be positioned so that the handle can be actuated in either direction and return to its non-use position and so that the handle can be oriented either to the left or right and either pointing upward or downward when not being used.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: June 25, 1996
    Assignee: Wright Products Corp.
    Inventors: Timothy K. Studt, Benjamin L. Sheets
  • Patent number: 5524978
    Abstract: The latch assembly disclosed provides a cabinet latch that is both earthquake and child resistant, but which is easy for an adult to open. This assembly can be used on cabinet doors of differing lengths and configurations.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: June 11, 1996
    Inventors: Robert H. Tunis, Randal R. Schanley
  • Patent number: 5493881
    Abstract: A locking system (20) allows a plurality of vehicle service doors (22) to be locked and unlocked by operating a single electrical switch in a suitable location such as the vehicle cab. The locking system (20) includes a lock (24) having a bolt (26) and a blocking cam (40). An actuator (144) moves the acm (40) between locked and unlocked positions via an extension member (46). The actuator (144) includes an actuating member in the form of a combined piston (148) and rack (150). A spring (170) urges rack (150) to remain in either of two selected positions.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: February 27, 1996
    Inventor: Steven M. Harvey
  • Patent number: 5482333
    Abstract: A sliding, door latch has a latch member and a spring member integrally molded in one-piece. The latch member, which can be secured in a latch opening in a thin door panel without the use of tools, includes a planar base member which covers and slides reciprocally in the opening. An integral actuator extends traversely from the back of the base member through the opening and has integral bosses on its sides which form grooves engaging tangs in the sides of the latch opening. An integrally molded latch finger projects from the actuator toward the door panel edge. The spring member includes a first pair of spaced apart elongated elements integrally hinged to the actuator, a second pair of elongated elements integrally hinged at one end to the first pair, a beam integrally hinged to and connecting the other ends of the second pair of elongated elements, and a hook integrally molded to the center of the beam and engaging the rear edge of latch opening.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: January 9, 1996
    Assignee: Eaton Corporation
    Inventors: Donald F. Gehrs, Louis L. Runge, Percy A. White
  • Patent number: 5431460
    Abstract: A latching mechanism includes a latch member pivotally connected with a mounting bracket for movement between latched and released positions, together with a spring clutch device that normally permits pivotal movement of the latch member toward the latched position. The latch member includes a cam surface that is operable by a striker member to displace the latch member from the released position to the latched position as the striker member is displaced toward the mounting bracket (for example, during the closure movement of a hood component to which the striker member is attached). A release device serves to operate the spring clutch to a released condition, whereupon the latch member is spring-biased toward the released position, thereby to unlock the striker member from the mounting bracket.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: July 11, 1995
    Assignee: Orscheln Co.
    Inventors: Tave Hass, Wayne L. Soucie, Robert L. Heimann
  • Patent number: 5331766
    Abstract: A device adapted for use in locking a window in closed position or in partially or fully open position which utilizes an elongated locking pin; and a flexible spiral shaped spring lying in a plane perpendicular to the direction of elongation of the pin. The spring has an inner end secured to the pin at a position intermediate the ends of the pin. The spring has an outer end with an opening therein.
    Type: Grant
    Filed: July 19, 1993
    Date of Patent: July 26, 1994
    Inventor: Robert A. Bennett
  • Patent number: 5322333
    Abstract: A cylinder lockset (30) includes a chassis assembly (72) with sleeves (80) and (81). A pair of liners (36) and (48) are mounted on sleeves (80) and (81), respectively, and facilitate attachment of chassis assembly (72) with a door (260). A pair of spring cassettes (38) are mounted on sleeves (80) and (82). A pair of levers (42) and (54) are mounted on the sleeves (80) and (82), respectively, and operate cassettes (38) directly for spring return of the levers upon release thereof. A pair of posts (388) and (390) are mounted on liner 48 and are formed with score locator lines (412), (414) and (416) to locate the liner relative to a housing (74) of assembly (72). Liner (36) is formed with four mounting holes (356), (358), (360) and (362) which facilitate use of the liner with either a lefthand or right-hand door mode.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: June 21, 1994
    Assignee: Emhart Inc.
    Inventors: George H. Norton, II, James E. Robida
  • Patent number: 5263749
    Abstract: Lock comprising a spring-latch and a bolt, the spring-latch being actuatable against the biasing action of a spring by means of an external lever (knob) or an internal lever (handle), the levers being rotationally rigidly coupled to respective coaxial hubs rotatably supported at the sides of an element for opening the spring-latch which is pivoted coaxially to the hubs and is intermediate thereto; the lock further comprises teeth for pulling the element defined on the hubs, the teeth being able to pull the element only in the direction for opening the spring-latch by actuating one of the levers, a spring for the elastic return of the hubs when the levers are released which acts on tabs of the hubs with the interposition of a block guided tangentially to the hubs; the block can be orientated and is shaped so as to provide abutment only to the tab of the hub to which the inner lever is rigidly coupled.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: November 23, 1993
    Assignee: Costruzioni Italiane Serrature Affini C.I.S.A. S.p.A.
    Inventor: Deo Errani
  • Patent number: 5257838
    Abstract: A door lock includes a dead bolt slidably received in a cylinder and including a pair of extensions extended outward beyond the cylinder, a pair of plates fixed to the cylinder, an oblong hole formed in each of the plates, an actuating wheel slidably engaged in the oblong holes of the plates and including a pair of teeth for engagement with the protrusions of the extensions when the actuating wheel rotates. A resilient member is fixed to one of the plates for positioning the actuating wheel.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: November 2, 1993
    Inventor: Jui-Chang Lin
  • Patent number: 5184853
    Abstract: A door lock mechanism that allows either tool operable locking or padlocking of a handle and escutcheon assembly. The lock includes a tool operable insert inset in the lock base and adapted to receive any one of number of standard tools. Such tools are used in industry to restrict access to specific groups of craft persons. For applications desiring padlock capability, the tool operable access can be disabled. A pawl coupled to the tool operable insert, is operable between first and second positions. When the pawl is biassed toward the first position, corresponding to the locked state, it will engage the latch, thereby effecting locking, whenever the latch is brought to the latched position, by turning the handle to a vertical position, and the use of the tool operable insert is enabled for disengaging the pawl from the latch and the pawl. When the pawl is biassed toward the second position the pawl is prevented from engaging the latch, thus disabling the tool operable lock to provide for padlocking.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: February 9, 1993
    Assignee: Northern Telecom Limited
    Inventor: Richard F. Whatley
  • Patent number: 5176416
    Abstract: An auxiliary lock has an actuating plate provided with an arm to push two teeth in a pulling plate to extend out or retract in a dead bolt. The actuating plate has two straight sides forming a 90.degree. to selectively contact the middle portion of a plate spring, which has one moveable and a fixed end.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: January 5, 1993
    Inventor: Jui-Chang Lin
  • Patent number: 5127684
    Abstract: A tension clamp for releasably joining two components. The clamp is anchored on a first component 10 by a mounting element 18 and is hooked onto the second component 11. The mounting element 18 is inserted under resilient bias into securing elements 17 on the first component, and has a resilient portion which produces the tension forces for joining the two components 10 and 11. The locking hook 20, which hooks onto the second component 11, is connected to the mounting element 18 by an intermediate link 19 and is preferably a plastic injection molding.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: July 7, 1992
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Arthur Klotz, Rudolf Leipelt
  • Patent number: 5125696
    Abstract: A cylindrical lock assembly (20) includes an inside subassembly (22) and an outside subassembly (24) which are assembled with a door (326). Each subassembly (22,24) includes a rose liner (26,38), a return spring cassette (28,40), a rose (30,42), a lever (32,46) and a lever insert (34,48). The inside subassembly (22) also includes a turn button (36) and the outside subassembly (24) includes a cylinder lock (44).The subassemblies (22,24) are assembled onto respective sleeves (168,170) of a chassis (50) which facilitates the retraction of a latchbolt (54) upon operation of either of the levers (32,46).Cassettes (28,40) are mounted in the lock assembly (20) by a pair of screws with one screw being inserted from one side of the door (326) and the other screw being inserted from the other side of the door.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: June 30, 1992
    Assignee: Emhart Inc.
    Inventors: James E. Robida, Kenneth W. Strickland
  • Patent number: 5112091
    Abstract: A door holding device for a motor vehicle door includes A door holding rod which is pivotally connected to a door installation member, door or door post. The door holding rod is provided with locking portions for holding the door in predetermined positions and with an end stop for holding the door in an end position. A holder housing is rigidly connected to an other door installation member. The door holding rod extends through the holder housing. A first roller is mounted in the holder housing so as to be rotatable about a rigid axis. A second roller is rotatably mounted on a load-applying arm of a torsion rod spring which rests against the holder housing. The door holding rod extends between the two rollers. The door holding rod has over its entire length which comes into contact with the rollers a rounded cross-sectional shape and the locking portions are formed by at least one bent portion of the door holding rod directed transversely of the longitudinal axis of the door holding rod.
    Type: Grant
    Filed: December 28, 1990
    Date of Patent: May 12, 1992
    Assignee: Ed. Scharwachter GmbH & Co. KG
    Inventor: Bernd A. Kluting
  • Patent number: 5103592
    Abstract: A protective door device for anti-aircraft installations and nuclear power stations has a door opening in a wall preferably designed as a concrete wall. The opening is surrounded on all sides by the wall and can be closed by means of a protective door which overlaps the wall. The protective door has a central lock and a bowl-shaped metal door leaf reinforced by ribs, from which one-piece support arms project. Two bearing bolts on which two door hinges are mounted are inserted in the wall near the door opening and pockets for adjustable engagement of lock bails of the central lock are arranged in the intrados of the door opening.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: April 14, 1992
    Inventor: Manfred Janitzky
  • Patent number: 5092641
    Abstract: A cable and locking and sealing device which has a body member to which one end of a cable is attached and the other end passes through a hasp so as to lock it and then the free end of the cable is inserted into the body member in a first direction, but it cannot be removed in the second direction. A disk rides upon a ramp to lock the second end so that it cannot be removed from the body member and in the present invention, a flexible O-ring of rubber or "NEOPRENE" or other flexible material serves as a spring to bias the disk upwardly along the ramp to lock the cable.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: March 3, 1992
    Assignee: Brammal, Inc.
    Inventor: Clarence A. Penick, Jr.
  • Patent number: 5064230
    Abstract: A latching mechanism for roll-up type doors on a vehicle truck body in which a rotatable rod extends through the truck body adjacent a top edge of the doors and has flanges for engaging the doors. A first lever arm coupled to one end of the rod enables rotation of the rod, and a second lever arm coupled between the first lever arm and the latching mechanism controls the relative rotational position of the rod. The latching mechanism comprises a housing assembly for attachment to the truck body, a rotatable support mounted in the housing and a third lever arm attached to the support and extending from the latching mechanism. An end of the third lever arm is connected to the second lever arm for effecting its movement in response to rotation of the support. First and second stops limit rotation of the support while a tension spring urges the support against the stops.
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: November 12, 1991
    Assignee: Kirtley Distributing Company, Inc.
    Inventor: William L. Ornduff, Sr.
  • Patent number: 5062671
    Abstract: The latch (100) includes a catch (102) having a beveled edge (102A). An aperture (104) receives a downward force to release the catch from the lip (106A) of a housing (106). A stop (108) limits the downward movement of the latch. A retaining tab (110) traps the latch within the door pocket and limits the upward movement of the latch. The retaining tab includes a beveled surface (110A) to facilitate the insertion of the latch into the pocket. A cantilever spring (112) exerts an upward force on the latch when compressed. The latch, including all of its associated parts, can be plastic injection molded in a single-action mold. The door (200) includes a substantially parallelepiped pocket (202) having an opening at the top to receive the latch. The pocket includes a front aperture (202FA) in the upper, front surface (202F) of the pocket, and a rear aperture (202RA) in the lower, opposing rear surface (202R).
    Type: Grant
    Filed: November 5, 1990
    Date of Patent: November 5, 1991
    Assignee: IBM Corporation
    Inventors: Frederick E. Goetz, Michael S. Miller, Homer Shelton, Jr.
  • Patent number: 5048879
    Abstract: A door lock for an automobile includes a wall facing a column which supports a pawl for detenting a rotary latch, a coil spring which is placed around the column. One end of the coil spring is supported by a first supporting portion of a housing. The other end of the coil spring is supported by a second supporting portion of a wall and is connected to the pawl. The column includes a connecting portion which projects from the column to limit movement of the coil spring.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: September 17, 1991
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Ryoichi Fukumoto, Tetsuya Arao
  • Patent number: 4998760
    Abstract: A spring-loaded handle return assembly of compact size is installed in a trim ring or rose on an exterior portion of a door. The return assembly operates to return a door handle to a home position automatically upon release of the door handle by a user.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: March 12, 1991
    Assignee: Best Lock Corporation
    Inventors: Duane B. Nixon, Ralph P. Palmer, Carl M. Pritchett
  • Patent number: 4997218
    Abstract: Disclosed is a positively locking latch or latch/hinge mechanism for use in pplications requiring quick connections and disconnections. The mechanism is comprised of a flange, a pin and base from which a plurality of plate extensions perpendicularly extend. The flange is dimensioned to fit snugly between two of the extensions. The extensions and the flange have axially aligned through holes of equal diameter. The pin axially translates through the aligned holes of the extensions and flange so that the flange is pivotally securable to the base. The diameter of the pin is only slightly less than the diameter of the holes so as to prevent radial movement of the flange relative to the pin axis. The mechanism includes a means for biasing the pin into an engaged position in which the flange is pivotally secured to the base and, alternately, a disengaged position in which the flange is removable from the base.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: March 5, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Robert K. Culling
  • Patent number: 4976479
    Abstract: A resilient doorstop may be inexpensively manufactured to provide a door-engaging portion and a base portion interconnected with two or more serially connect, long, straight lengths of rod layer transverse to the door-engaging portion and having a length sufficient that the door-engaging portion may be substantially deformed in the direction of the base portion without exceeding the elastic limit of the rod. The resilient doorstep is preferably formed from a single, resilient, bent rod and includes a U-shaped portion with a central axis laying transverse to the central axis of the door-engaging portion to provide one or more long straight lenghts of rod, permitting deformation of the door-engaging portion toward the base portion through torsional deformation and urging the door-engaging portion away from the base portion through torsional resilience.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: December 11, 1990
    Inventor: Lawrence M. Lunn
  • Patent number: 4971373
    Abstract: A noise suppressing device in a lock device for a vehicle, including a body to be fixed to a door of the vehicle; a latch rotatably supported in the body and adapted to be rotated by engagement with a striker fixed to a vehicle body; a ratchet rotatably supported in the body and adapted to engage a full-latch stepped portion of the latch and thereby prevent reverse rotation of the latch; first and second spring members for biasing the ratchet to engage the same with the latch; and an open lever for releasing engagement of the ratchet with the full-latch stepped portion; wherein the first spring member normally biases the ratchet to engage the same with the latch, and the second spring member does not bias the ratchet under a full-latch condition where the ratchet is engaged with the full-latch stepped portion of the latch, while when the ratchet is rotated in a releasing direction, the second spring member biases the ratchet.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: November 20, 1990
    Assignee: Mitsui Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Yoshikazu Hamada, Tetsuzo Igata, Atsuo Suzuki, Makoto Sakamoto
  • Patent number: 4925222
    Abstract: A door latch actuating mechanism comprises: a housing attachable to door structure, a handle carried by the housing for rotation in either of two directions, and an output shaft rotatable in response to handle rotation, and mechanism in the housing to yieldably resist handle rotation in either direction, the mechanism including(i) a rotor coupled to the handle to rotate therewith,(ii) a first spring coupled to the rotor to resist rotor rotation in one direction, and(iii) a second spring coupled to the rotor to resist rotor rotation in the opposite direction.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: May 15, 1990
    Assignee: Adams Rite Manufacturing Co.
    Inventor: Freidrich Loock
  • Patent number: 4915431
    Abstract: An electromagnetic lock including an armature and an electromagnet with the armature adapted for floating attachment to a door by a plunger-bolt assembly fixed to the door, and an electromagnet adapted for fixed attachment to a door frame. A door-movement alert switch structure comprising a pushbutton switch supported on the electromagnet, a plunger supported on the plunger-bolt assembly, and a spring force-biasing the plunger into mating contact with the switch when the door is electromagnetically locked to establish a first switch-actuation state. The force-biased spring maintains the switch in its first state while the armature is magnetically restrained. When the door is opened a door-movement distance slightly less than the armature float distance, the plunger is partially drawn into a plunger housing fixed on the plunger-bolt assembly. The switch responds by transferring to a second switch actuation state indicating an attempt to open the magnetically locked door.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: April 10, 1990
    Assignee: Rixson-Firemark Inc.
    Inventor: Kevin L. Bailey
  • Patent number: 4911485
    Abstract: A latching structure defined by a mount, a handle pivotally mounted to the mount and linked with a latch pin slidably mounted in the mount. The linkage between the handle and the latch pin includes first parallel links pivotally mounted to the handle and pivotally mounted to the latch pin. Second links are pivotally mounted to the first links and to a spring block slidably mounted on the latch pin. A spring is placed in compression between a shoulder on the latch pin and the spring blocks. Consequently, the linkage mechanism operates to actuate the latch pin with the handle and create an overcenter mechanism to bias the entire mechanism to either a fully opened position or a fully closed position. A gasket is provided on a flange associated with the handle to seal the latch mechanism when the mechanism is strongly biased by the spring into the closed position.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: March 27, 1990
    Assignee: The Hartwell Corporation
    Inventor: Michael D. Wasilewski
  • Patent number: 4909551
    Abstract: An electrical distribution load center consists of a non-conductive enclosure and a circuit breaker bus bar support panel that are interconnected by interlock members that can be snap-fitted to secure the two panels to each other. The support panel also has a latch member so that the bus bars can be mounted onto the panel in a heat-staking, insert-molded or snap-fit arrangement. The support panel also has elements for locking the circuit breakers onto the panels in conducting contact with the bus bars. The enclosure and the support panel are enclosed by a non-metallic trim panel that has a non-metallic door hinged thereto and which carries a latch for latching the door to the trim panel.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: March 20, 1990
    Assignee: Square D Company
    Inventor: Jeffery J. Buchanan
  • Patent number: 4907833
    Abstract: An outside handle device has a stationary base to which a handle is pivotably mounted. A bell-crank operatively connected to a door latching mechanism is also pivotably mounted to the base. A common spring has ends connected to both the handle and the bell-crank for urging both to initial positions thereof. The common spring permits the simultaneous return of both the handle and the bell-crank to their initial positions, so that noise generation is avoided.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: March 13, 1990
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Shinji Ogasawara, Yukio Isomura, Tetsurou Tanimoto
  • Patent number: 4884835
    Abstract: Disclosed is a means to provide easily installed and accurately aligned lever spring cage for door hardware locks and latches by in the field installers. The device comprises a pair of posts, selectively arranged and mounted in a mounting plate, having four diagonally arranged key hole shaped bosses which accept the pins and in combination with accurate holes in the spring cage effect both the securing and alignment of the spring cage relative to the mounting plate.
    Type: Grant
    Filed: August 31, 1988
    Date of Patent: December 5, 1989
    Assignee: Schlage Lock Company
    Inventors: Jon M. Smallegan, Richard R. Bettger
  • Patent number: 4875723
    Abstract: An actuating means for a vehicle body closure latch includes a driver or passenger controlled electric motor driving a reciprocable rack through a gear train. The rack is resiliently biased to a neutral position and shifts an actuator from neutral to an operating position when the rack is moved from the neutral position to a driving position. The actuator is engageable with a latch operator to control movement of the latch bolt to unlatched position when the actuator moves to an operating position. When the actuator reaches the operating position, the actuator is positively stopped to stall the motor or power operator. When the power is removed from the stalled motor or power operator by the driver or passenger releasing a switch, the bias of the resilient centering means returns the rack to its initial neutral or starting position and back drives the motor through the gear train.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: October 24, 1989
    Assignee: General Motors Corporation
    Inventors: David E. Compeau, Mark Manuel, Lloyd W. Rogers, Jr.
  • Patent number: 4858969
    Abstract: A door latch assembly for use in a microwave oven comprises a latch pawl secured to the inside of the door, a revolving plate having integrally molded therewith a push projection, a hook-shaped projection having a stop surface formed thereon, a projected bar and a U-shaped spring support member having a panel spring positioned longitudinally therein. The stop surface of the hook-shaped projection prevents further rotation of the revolving plate by abutting the surface of the spring support member.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: August 22, 1989
    Assignee: Gold Star Co., Ltd.
    Inventor: Kwan H. Lee
  • Patent number: 4848810
    Abstract: A device for manual or automatic opening of an aircraft safety equipment box includes a pin fixed to the box door, a pivotable hook engageable with the pin, and a resilient return assembly associated with the hook. The return assembly has a main spring urging the hook to a disengaged position and a locking lever pivoted about the same axis as the hook. In its locked position the lever abuts and holds the same part of the main spring as holds the hook in its engaged position. In the release position the lever frees the main spring to drive the hook to disengage it from the pin. The return assembly further has a secondary spring for returning the lever to its release position and the hook to its engaged position. The return assembly includes a release plate locking the lever in its locked position. Displacement of the plate causes the hook to disengage from the pin.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: July 18, 1989
    Assignee: Societe De Fabrication D'Instruments De Mesure
    Inventors: Dominique Gosse, Gerard Silber
  • Patent number: 4801164
    Abstract: A check rail lock having a housing with an interior space which rotatably mounts a shaft connected to a handle and a cam and with stop members associated with the cam and the housing for limiting rotation of the cam between locked and unlocked positions. The cam is releasably held in either of these positions by mounting of a spring washer on the shaft to which the cam is fixed, and with the spring washer and the housing having coacting detent structure which releasably holds the cam in either the locked or unlocked position. The spring is generally concave for predetermined spring loading and has planar sections with detents to assure good engagement with detent notches on the housing.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: January 31, 1989
    Assignee: Truth Incorporated
    Inventor: Duane L. Mosch
  • Patent number: 4790579
    Abstract: A two-piece spring latch assembly operable as a closure device for a load center cabinet, wherein the latch assembly is slidably engagable with the door of a load center cabinet. The latch assembly includes a sliding latch body having a top surface with a depression for facilitating engagement of the latch body. The latch body also includes a latch member for engaging the frame of the load center cabinet. A latch spring is mounted to the latch member and defines a spring member for urging the sliding latch body into a latched position. The latch spring also defines a latch bearing surface and a strike bearing surface. These surfaces are fabricated from the same material as the spring member and resist wear through repeated cycles of engagement and disengagement with the frame of the load center cabinet.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: December 13, 1988
    Assignee: Siemens Energy & Automation, Inc.
    Inventors: James Maxwell, Rodney Raabe