Locking Latch Bolts, Biased Patents (Class 70/141)
  • Patent number: 11653602
    Abstract: Shade house for casting an adjustable shadow over a surface, the shade house including: at least one frame extending in a longitudinal direction; a first set of photovoltaic panels mounted on the frame substantially orthogonally to a same orientation axis; a second set of opaque panels, for preference photovoltaic, mounted on the frame and movable in longitudinal translation relative to the frame at least between an open configuration, in which the panels are at least partially superposed over the panels in a view along the orientation axis, and a closed configuration, in which the panels at least partially extend beyond the panels in a view along the orientation axis; and an actuation system configured to actuate the second set at least from the open configuration to the closed configuration, and vice versa, the actuation system including pulleys mounted on the frame.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: May 23, 2023
    Assignee: OMBREA
    Inventor: Christian Davico
  • Patent number: 11585132
    Abstract: A magnetic safety gate latch assembly and method of operation. The assembly includes: a pool latch tube, a user-actuated lid coupled to the top end of the pool latch tube; a rotatable shaft within the pool latch tube, an upper end of the shaft rigidly coupled to the lid, and a lower end of the shaft including a shaped base. The assembly further includes a magnet housing that at least partially encloses the shaped base and includes an aperture to cooperatively engage with the shaped base. The assembly further includes a bottom cover coupled to the lower end of the pool latch tube and enclosing the magnet housing, the bottom cover including an aperture facing a latch pin housing, the aperture positioned to expose a magnet. The assembly further includes a ferromagnetic latch pin and housing, and a magnetic latch pin guide slidably enclosing the latch pin.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: February 21, 2023
    Assignee: BARRETTE OUTDOOR LIVING, INC.
    Inventors: Christopher Michael Schneider, Craig Kime, Antonello Nizzia, Christopher John Heritage
  • Patent number: 10604975
    Abstract: The object of the invention is a reversible activation unit for the alternate impingement of two separate motor vehicle functional elements (1, 2), in particular two motor vehicle door latches (1, 2). The activation unit possesses a single motor (3, 4) and two connecting elements (8, 10). The motor (3, 4) impinges either the distanced first functional element (1) via the connecting element (8) or the distanced second functional element (2) via the second connecting element (10) dependent on its working direction. According to the invention, the first connecting element (8) is connected to a first lever (7) and the second connecting element (10) to a second lever (9). The respective lever (7, 9) is impinged dependent on the working direction of the motor (3, 4) which preferably works in a linear manner. Furthermore, the two levers (7, 9) are connected via an interposed spring (15).
    Type: Grant
    Filed: February 2, 2017
    Date of Patent: March 31, 2020
    Assignee: Kiekert AG
    Inventor: Robert J. Hunt
  • Patent number: 10232789
    Abstract: A latch assembly for a vehicle bin includes a latch housing having an integrated bumper. The latch housing defines a latch opening and a base adapted to carry the bumper. The bumper includes a load edge and is disposed on the base to provide a constant load around the latch opening. The load edge may define one of a planar load edge, a serrated load edge, and a scalloped load edge.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: March 19, 2019
    Assignee: Ford Global Technologies LLC
    Inventors: Michael Istok, Anna Miller Hill
  • Patent number: 9683390
    Abstract: A lock includes a housing in which a combination lock is received. The combination lock is unlocked when the combination unit of the combination lock is located at an unlocked position. The combination lock has a cam pin which is operated when the combination lock is unlocked and locked. A button is pushed to drive a cam which is located beside the combination lock. When the combination lock is locked, the cam pin is connected to the restriction hole to restrict the cam, and the latch is in its locked status. When the combination lock is unlocked, the cam pin is removed from the restriction hole. When the button is pushed, the cam is rotated to release the latch from the room of the housing. The combination of the combination lock can be changed by operating the operation bar when the combination lock is unlocked.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: June 20, 2017
    Assignee: Federal Lock Co., Ltd.
    Inventor: Tien-Kao Liu
  • Publication number: 20150013402
    Abstract: An exemplary lock includes an outer spindle, a center spindle, and a lock control assembly selectively coupling the outer and center spindles. In one embodiment, the lock control assembly includes a cam coupled to the center spindle, a locking bar slidingly coupled to the outer spindle, a cam follower positioned between the locking bar and the cam, and a biasing element urging the locking bar into engagement with the cam follower. Engagement between the cam and the cam follower may be configured to move the cam follower longitudinally in response to relative rotation between the cam and the cam follower.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 15, 2015
    Inventor: Nathanael Silas Murphy
  • Patent number: 8931813
    Abstract: A rotary lock including a housing having a strike channel shaped to receive a strike component and a latch member including at least one strike engaging member. The latch member is rotatable between an unlatched position, a secondary latch position and a primary latch position. A keeper member is moveable between a disengaged position, a secondary keeper position, and a primary keeper position. A lock member is moveable between a lock position and an unlock position. The lock member and/or a lock actuator is non-movable to the lock position when the latch member is in the secondary latch position, thereby providing indicia that the latch member is not fully latched in a primary latch position. Methods of assembly and use are also provided.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: January 13, 2015
    Assignee: A.L. Hansen Manufacturing Co.
    Inventors: Douglas L. Juga, Charles E. Bullock
  • Publication number: 20140165672
    Abstract: A lock assembly includes an exterior operator assembly, an interior operator assembly, and a latch assembly. An outer spindle is operatively coupled to a latch assembly, is drivably coupled to the interior operator assembly, and has a longitudinal bore. A coupling mechanism is coupled to the outer spindle. A locking spindle assembly is rotatably received in the longitudinal bore, and is configured to selectively operate the coupling mechanism to couple the exterior operator assembly to the outer spindle upon actuation of a drive assembly. The locking spindle assembly has a fire compliant component made of a first material that melts during a fire to prevent operation of the latch assembly with the exterior operator assembly, and has a fire resistant component made of a second material and configured to block the longitudinal bore of the outer spindle to aid in preventing the spread of the fire through the door.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Applicant: Stanley Security Solutions, Inc.
    Inventors: Bradley Trent, Chad A. Hickman, Simon Marin, Bret Holbrook
  • Publication number: 20140165673
    Abstract: A lock assembly includes an exterior lockset that includes an exterior operator handle. An interior lockset includes an interior operator assembly and a control electronics module. An outer spindle is operatively coupled to a latch assembly and is drivably coupled to the interior operator assembly. A locking mechanism is operatively coupled to a drive assembly, and includes a coupling mechanism and a locking spindle assembly. The coupling mechanism is configured to selectively couple the exterior operator handle to the outer spindle. The locking spindle assembly is configured to operate the coupling mechanism to transition from a locked condition to an unlocked condition by an actuation of the drive assembly. A lock position sensor is located in the interior lockset and is communicatively coupled to the control electronics module. The lock position sensor is configured to sense whether the coupling mechanism is in the locked condition or the unlocked condition.
    Type: Application
    Filed: December 16, 2013
    Publication date: June 19, 2014
    Applicant: Stanley Security Solutions, Inc.
    Inventors: Anthony Tyner, Chad A. Hickman
  • Publication number: 20140047875
    Abstract: A lockset has an actuator unit, a mounting unit and a latch retractor mechanism. The mounting unit attaches the lockset to a door and supports the actuator unit and latch retractor mechanism. The actuator unit includes inside and outside door knobs and a cam mechanism that move together within the mounting unit. During rotational movement, a first cam of the cam mechanism engages the latch retractor mechanism to retract the latch. The actuator is axially movable along an axis of the actuator unit when one of the knobs is pushed or pulled. During axial movement, a second cam of the cam mechanism engages the latch retractor mechanism to retract the latch. A locking mechanism is selectively actuable to act between the actuator unit and the mounting unit to prevent both rotational and axial movement of the actuator unit relative to the mounting unit, thereby locking the lockset.
    Type: Application
    Filed: June 4, 2013
    Publication date: February 20, 2014
    Inventor: Steven T. Weathersby
  • Publication number: 20140007630
    Abstract: A lock assembly for use with a latch movable from an extended position to a retracted position, and the lock assembly includes an interior assembly and an exterior assembly. The interior assembly includes an interior handle manually movable to retract the latch and a locking member manually operable such that the locking member is movable from an unlocked position to a locked position. The exterior assembly includes an exterior handle manually operable to retract the latch when the locking member is in the unlocked position and inoperable to retract the latch when the locking member is in the locked position. The exterior assembly further includes a biasing member that biases the locking member toward the unlocked position. When the locking member is in the locked position, movement of the interior handle to retract the latch causes the biasing member to move the locking member to the unlocked position.
    Type: Application
    Filed: June 20, 2013
    Publication date: January 9, 2014
    Inventors: Rick L. Brannaman, Eric E. Fishencord, Sajil J. Mathachan, Michael D. Rainone, Michael S. Justis, Sachin J. Keni, Milind A. Ghumre
  • Patent number: 8381558
    Abstract: An institutional door lock mechanism for retrofitting existing installations with a remotely controllable/monitorable door lock and open/close position indicator is described. A hollow vertical door strike jamb extends along an outside surface of the door frame opposite a hollow vertical columnar striker plate mechanism mounted on a fronting plate of the door. A hollow vertical housing also on the fronting plate contains a first component part of a proximity/alignment detection mechanism including a magnetic reed switch. The door strike jamb is configured as a vertical riser for housing a wiring harness for the catch-extension/retraction mechanism and for the proximity/alignment detection mechanism. The catch-extension/retraction mechanism includes a motor for extending/retracting the catch, the motor being operable by a securely coded manual key placed adjacent a switch mechanism or within a keyway operatively coupled with the switch mechanism.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: February 26, 2013
    Inventor: Peter Alef
  • Patent number: 8302437
    Abstract: A locking assembly for a door having an outer side, an inner side and a sidewall and has an exterior assembly, a cylinder and an interior assembly. The exterior assembly is mounted on the outer side of the door and has an outside mounting seat, a press-button, a transmitting device, a transmitting board, an engaging wheel and a rotating spindle. The cylinder is mounted in the exterior assembly and has a cylinder-transmitting panel. The multi-point latch is mounted in the sidewall of the door and is connected to the exterior assembly and the cylinder. The interior assembly is mounted on the inner side of the door, is connected to the exterior assembly and the cylinder and has an inside mounting seat, a operating handle, a switch, a linking device, a seat board, an inside reset spring and a switch mount.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: November 6, 2012
    Assignee: Eversafety Precision Industry (Tainjin) Co., Ltd.
    Inventor: Guan-Chen Fang
  • Publication number: 20120198896
    Abstract: A mortise lock is provided with independently rotatable spindles and a highly accessible lock-handing selector. Also, a clutching mortise lock is provided that enables operative rotation in both directions to retract the latch.
    Type: Application
    Filed: April 19, 2012
    Publication date: August 9, 2012
    Applicant: TOWNSTEEL, INC.
    Inventor: Charles W. Moon
  • Publication number: 20120167644
    Abstract: A delayed egress paddle door lock system operable with a door that is pivotally mounted in a door frame, including a. a main lock module with a lock bolt, b. a push paddle for driving the lock bolt from its locked position to its unlocked position, and c. a delayed egress lock module mountable on the door and including, a locking element having a restraining position where it engages a restraining element on the frame and restrains the door from being opened, and a control member including a timer, adapted to sense when the push paddle has been pushed, move the locking element to its restraining position, activate the timer for a predetermined time delay period while the locking element is in its restraining position, and afterward to move the locking element to its release position, whereby the door becomes openable from the push paddle.
    Type: Application
    Filed: January 3, 2012
    Publication date: July 5, 2012
    Inventor: Mark J. BERGER
  • Publication number: 20110204673
    Abstract: In one aspect, the invention is directed to a closure latch for a vehicle door. The closure latch includes an emergency lock actuator to permit a person to lock the door in the event that the power lock actuator is unusable. The latch also includes an ‘impatient passenger’ feature, which permits the doors to be unlocked using the remote keyless-entry feature on the key fob even in a situation where an ‘impatient passenger’ had prematurely lifted the door handle of the vehicle. In some prior art latches, such an action by an ‘impatient passenger’ would prevent the drive motor on the latch from unlocking the latch, thereby necessitating the owner to press the unlock button on the key fob a second time. There is some overlap in the components that used for the ‘impatient passenger’ feature and the components used for the emergency lock actuator, thereby reducing cost and complexity of the latch.
    Type: Application
    Filed: February 24, 2011
    Publication date: August 25, 2011
    Inventors: Francesco CUMBO, Luca BIGAZZI
  • Publication number: 20110162419
    Abstract: A door lock device includes an electrical drive source, which pivots a drive member from a predetermined neutral position, and a return urging member, which returns the drive member to the predetermined neutral position. The drive member pushes a locking lever with a first engagement portion and moves the locking lever to a lock position when the drive member moves from the predetermined neutral portion in a first direction in a state in which the locking lever is arranged at an unlock position. The drive member allows the double lock lever to move to the second position and disengages the first engagement portion from the locking lever when subsequently returned to the predetermined neutral position. The drive member pushes the double lock lever with a second engagement portion when moved again from the predetermined neutral position in the first direction.
    Type: Application
    Filed: September 9, 2009
    Publication date: July 7, 2011
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ryujiro Akizuki, Takashi Nishio, Yusuke Yamada, Sho Sannohe
  • Publication number: 20100294007
    Abstract: An access door for a locking mailbox is provided having a mail slot configured for the receipt of items, such as letters, which can be covered by a rotatable mail slot door. The locking mailbox can also have a lock configured to selectively lock the access door to a housing of the pre-existing or new mailbox and, optionally, a theft deterrent device positioned adjacent the mail slot that projects inwardly into the housing of the mailbox when the door of the mailbox is positioned in a closed position.
    Type: Application
    Filed: May 4, 2010
    Publication date: November 25, 2010
    Inventors: THOMAS J. CYPHERS, REINHARDT F. CYPHERS
  • Publication number: 20100212375
    Abstract: A multipoint locking system includes a body having an upper aperture and a lower aperture therein. An upper latch pawl is disposed in the upper aperture and is pivotable about a first vertical axis between a first retracted position and a first extended position. A lower latch pawl is disposed in the lower aperture and is pivotable about a second vertical axis between a second retracted position and a second extended position. At least one actuator is configured to move the upper and lower latch pawls between their retracted and extended positions. The body can be an astragal, a vertical frame member, or the like.
    Type: Application
    Filed: February 23, 2009
    Publication date: August 26, 2010
    Applicant: Endura Products, Inc.
    Inventors: Michael K. Mitchell, Andrew Krochmal
  • Publication number: 20100154490
    Abstract: A high security locking system can be used in a conventional pivot door adapted for use with a latch and deadbolt lock combination. The high security system can be a multi-point lock, received in a recess formed in a locking edge side of a door stile, cooperating with a linkage or other mechanism in a conventional deadbolt/location. The lock can be actuated with a keyed cylinder and thumb turn combination.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 24, 2010
    Inventors: Bruce Hagemeyer, Dan Raap, Gary Tagtow, Tracy Lammers, Allen Rickenbaugh
  • Publication number: 20100083715
    Abstract: A locking device for flaps, luggage compartment flaps, doors or lids comprising a housing, an actuating handle for unlocking a locking device pivotably arranged on the housing, an actuating lever, the actuating handle being supported on the housing as a rocker; a release wheel arranged pivotably on the housing and connected with the actuating lever to move unlocking rods; a locking bolt which is movable into a locking or a freewheeling position via an actuating element; a first, rotatably mounted driver disk which is rotatable by the release wheel; a second, rotatably mounted driver disk coupled to the first driver disk in order to be carried along by rotation of the first disk, for operating a locking handle connected thereto; freewheel for the actuating handle when the locking device is locked or unlocked, because a reversing lever, which can be actuated by the locking bolt, is arranged pivotably on the housing and is rotatable by the release wheel which forms a freewheel on both sides.
    Type: Application
    Filed: October 19, 2009
    Publication date: April 8, 2010
    Inventor: Winfried PETER
  • Publication number: 20090314042
    Abstract: A door lock having a large handle is provided, in which the door lock includes an inner lock portion, an outer lock portion and a lock bolt. The outer lock portion includes a transmission case and a cover, which define a receiving space therein for receiving an inner actuating plate engaged with an inner transmission wheel, and an outer actuating plate engaged with an outer transmission wheel. When the inner actuating plate moves upward, the outer actuating plate is caused to move upward, driving the outer transmission wheel to rotate counterclockwise. When the inner transmission wheel rotates counterclockwise, the outer transmission wheel is caused to rotate counterclockwise. When the key button is pushed downward, the outer actuating plate is caused to move upward, driving the outer transmission wheel to rotate counterclockwise. When the outer transmission wheel rotates counterclockwise, the lock bolt is caused to retract to unlatch the door.
    Type: Application
    Filed: June 24, 2008
    Publication date: December 24, 2009
    Inventor: FangChang Fan
  • Publication number: 20090241613
    Abstract: The present invention relates to a direct connecting type door latch device for an automobile, comprising: a key cylinder which is provided at an outside of a door and to which a key operation rod is formed, a latch comprising a connection member, wherein a latch linking means interconnects the key operation rod and the connection member such that the rotation force of the key operation rod of the key cylinder can be transmitted to the connection member of the latch when an outside handle to which the key cylinder is mounted is positioned apart by a predetermined distance from the latch.
    Type: Application
    Filed: July 31, 2008
    Publication date: October 1, 2009
    Applicant: Kia Motors Corporation
    Inventor: Sang Young Lee
  • Publication number: 20090211318
    Abstract: The present invention relates to a lock device for a door of the type with seating unit through the door shutter. The seating unit comprises a first seating body, a second seating body, a first cover and a second cover. There are provided connecting elements, generally self-tapping screws, that engage both the first cover to the first seating body and the second cover, closing the second seating body as a package thereinbetween. Among the other things, the lock device allows a wide rotation of the handle.
    Type: Application
    Filed: March 26, 2009
    Publication date: August 27, 2009
    Applicant: GIACINTO RIVADOSSI S.P.A. IN LIQUIDAZIONE
    Inventor: Carlo Pilotelli
  • Publication number: 20090165509
    Abstract: A multi point door lock device featuring a casing adapted to operatively engage the communicating components of the door lock. A removably engageable latch module slidably engages with the casing. A latch is reversibly engaged into the latch module with an allen screw and allows for user reversal to accommodate different door installations. The latch module also provides a switch for changing between first and second modes of operation to provide an external day latch function. The switching lever protrudes through the face plate on the side of the door.
    Type: Application
    Filed: January 10, 2007
    Publication date: July 2, 2009
    Inventor: Stanley Chung
  • Publication number: 20080083253
    Abstract: A door lock assembly includes a sleeve connected to a handle, a spindle tube inserted into the sleeve and having a spindle tab to control a latch, and a spindle driving plate disposed transversely within the spindle tube. A tail piece of a key plug attached to the handle engages a central aperture of the spindle driving plate. A radial tooth of the spindle driving plate extends radially into a slot of the spindle tube so as to rotate the spindle tube when the spindle driving plate is rotated by the tail piece. The door lock assembly has no transmitting element to transmit rotational movement from the sleeve to the spindle tube and does not permit retraction of the latch by rotating the handle.
    Type: Application
    Filed: October 4, 2007
    Publication date: April 10, 2008
    Inventors: Lan-Kun DON, Po-Yang CHEN, Ching-Chuan KUO
  • Patent number: 7354081
    Abstract: The present invention comprises a reversible, single bolt mortise lock assembly for hinged doors. The lock assembly combines live bolt and dead bolt functions utilizing only a single bolt. The invention further features a reversible lock assembly that can be opened by rotation of the door handle either clockwise or counterclockwise, and a dual slide lock system.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: April 8, 2008
    Assignee: Hardware Specialties, Inc.
    Inventor: Michael Kondratuk
  • Patent number: 7010946
    Abstract: The invention generally relates to a latch apparatus having a locking live bolt. One embodiment of the invention is a latch apparatus having a housing with opposed plates that are spaced apart and secured to each other by support arms formed from the plates. A live bolt of the apparatus is slidably mounted in the housing and horizontally actuated between an extended and a retracted position. A live bolt hub is mounted in the housing and actuates the live bolt. A slide, actuated by a rotatable cam, is mounted in the housing and moves vertically between a first position and a second position. In the first position the slide is disengaged from the live bolt, and in the second position the slide locks the live bolt in an extended position.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: March 14, 2006
    Assignee: Truth Hardware Corporation
    Inventor: Kevin Hahn
  • Patent number: 6782724
    Abstract: This invention involves a locking apparatus for semi-trailers and/or freight delivery units. A pin plate is attached to a standard trailer swing door, roll-up type door or another type of door. A housing is placed in the floor of the semi-trailer. A pin located within the housing is slidable within the housing from an unlocked position to a locked position, whereby the pin is raised to engage a pin plate secured to the semi-trailer door. A cam lock or another lock is used to keep the pin raised in the locked position.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: August 31, 2004
    Inventor: Steven Michael Kelly
  • Patent number: 6688063
    Abstract: A storm door construction includes an internal rectangular frame providing a pane opening, the frame including left and right vertical members, a head panel and a base panel. One of the left and right vertical members comprises upper and lower vertical stile pieces and a mortise box located between the upper and lower vertical stile pieces. The mortise box has an opening sized to receive a mortise lock therein. Inside and outside skin panels shaped to cover both sides of said rectangular frame and having rectangular openings substantially in registry with said rectangular pane opening are laminated onto the frame. Both vertical members can include mortise boxes for alternate left or right side mounting of the door in an external doorframe. Each mortise box can comprise upper and lower tongues, and each upper and lower vertical stile pieces can comprise a groove that is sized and shaped to engage a respective tongue of the mortise box.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: February 10, 2004
    Assignee: Larson Manufacturing Company
    Inventors: Allen E. Lee, Bryan P. Zacher, Brian R. Way
  • Patent number: 6299222
    Abstract: A lockset mechanism having a latchbolt assembly adapted for manual and remote operation is provided. The latchbolt assembly includes a latchbolt tail and a latchbolt head pivotally mounted for relative movement on the latchbolt tail. A slide mounted on the latchbolt tail is moveable for selectively engaging the latchbolt head to permit pivoting of the latchbolt head relative to the latchbolt tail. A spring biases the slide towards the position which engages the slide. A solenoid is operably coupled to the slide for actuation thereof.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: October 9, 2001
    Assignee: Emhart Inc.
    Inventor: Ruud S. Atmodimedjo
  • Patent number: 4835997
    Abstract: A two-way rotary lock is disclosed of a type suitable for use in locking a sliding door of an automative vehicle in either an open or closed position. This lock includes a lock body that defines first and second recesses positioned on opposed sides of the lock body to receive first and second strikers mounted to the side frames which define the door opening. A latch plate is rotatably mounted within the lock body, and this latch plate defines first and second tangs. Pivotal movement of the latch plate causes the first and second tangs to block the respective recesses and thereby capture the respective strikers in place. A single lock mechanism is used to secure the latch plate in position, and appropriate linkages allow either an inside handle or an outside handle to be used to release the latch plate and thereby release a captured one of the strikers from the lock body.
    Type: Grant
    Filed: March 14, 1984
    Date of Patent: June 6, 1989
    Assignee: A. L. Hansen Manufacturing Company
    Inventor: Michael V. Akright
  • Patent number: 4226101
    Abstract: A cabinet lock which includes a housing having a latch mounted in the housing for pivotal movement into and out of the housing together with a push plate slidably mounted in the housing for releasing the lock. The latch has a slot formed therein and a first spring urges the push plate away from the latch whereby a lug on the push plate engages the slot of the latch which prevents the latch from pivoting from a position extending outwardly of the lock. A second spring connected to the latch and the housing urges the latch inwardly of the housing when the lug of the push plate is removed from the slot of the latch as the push plate is pushed inwardly of the housing against the action of the first spring.The housing carries a frangible plate covering the push plate which may be broken whereby the push plate may be pushed.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: October 7, 1980
    Inventor: Walter F. Lee