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| Number | Title | Issue Date |
| 7188870 | Multi-functional mortise lock A multi-functional mortise lock that can be rapidly converted between different functions without opening the mortise lock case by installing blocking screws that extend through threaded blocking openings in a sidewall of the case and into blocking interference with... | 03/13/2007 |
| 7155946 | Mortise lock having double locking function A mortise lock having a double locking function is provided, which includes: a deadbolt for performing a locking function of a door by going in and out the door; a latchbolt going in and out the door by a handle installed on the door; and a locking member for mainta... | 01/02/2007 |
| 7155945 | Lock having a lockable handle shaft A lock including a frame, a handle operated latch bolt, a handle shaft, a latch bolt actuating mechanism and a mechanism for locking the handle shaft. The latch bolt locking mechanism includes a locking lever which is fixed with respect to the handle shaft and arran... | 01/02/2007 |
| 7108300 | Reversible latch bolt A latch is provided for a mortise lock of the type comprising a housing for accommodating the lock components. The latch comprises a first and second portions movably mounted in the housing and a securing element for releasably connecting the first and second portio... | 09/19/2006 |
| 7104096 | Spring latch lock A lock (1, 30) having a box body (2) with a faceplate (3), a latch (4) co-operating with an elastic element (5) adapted to keep the latch normally protruding from the faceplate (3) and with a moving element (6) associ... | 09/12/2006 |
| 7007985 | Automatic deadbolt mechanism for a mortise lock An automatic mechanism and method for moving a deadbolt between a retracted deadbolt position and an extended deadbolt position. A trigger is operatively coupled to the deadbolt and to the auxiliary latch. The trigger is configured to cause a first movement of the d... | 03/07/2006 |
| 7003990 | Mortice lock A mortice lock for recessed installation into the edge of a door or door frame includes a deadlatching member that is mounted on a bolt assembly for pivoting movement. A drive shaft and hub can be rotated in either a clockwise or counterclockwise direction to cause ... | 02/28/2006 |
| 6802546 | Convertible door lock latch mechanism A convertible door latch assembly convertible between a non-locking configuration and a locking configuration. The convertible door latch assembly including a bolt housing, a bolt slidably engaging the bolt housing and having a first slot and a second slot, a drawba... | 10/12/2004 |
| 6735993 | High strength lever handle lock mechanism A lock mechanism for use with lever handles includes a lock core and a latch mechanism that is rigidly connected to the lock core to prevent the lock core from rotating in the door. Through-bolts are not needed, allowing a small diameter rose to be used. Stops and a... | 05/18/2004 |
| 6698803 | Door latching mechanism A door latching mechanism includes a slide housed within a frame adapted for sliding motion of the slide within the frame and a spindle rotatably mounted to the frame and adapted to move the slide between a retracted and an extended position. A void is de... | 03/02/2004 |
| 6634196 | Tubular lock directly actuatable by a key A tubular lock. The lock can be directly actuated and unlocked by a key and includes an inner lock assembly mounted to an inner side of a door and an outer lock assembly mounted to an outer side of the door. The inner lock assembly includes an inner handl... | 10/21/2003 |
| 6626018 | High strength lever handle lock mechanism A lock mechanism for use with lever handles includes a lock core and a latch mechanism that is rigidly connected to the lock core to prevent the lock core from rotating in the door. Through-bolts are not needed, allowing a small diameter rose to be used. ... | 09/30/2003 |
| 6568725 | Lock chassis A lock chassis including a chassis housing having two substantially identical housing halves. The housing halves mate to form the housing when oriented 180° relative to each other. The housing halves include sidewalls having a lateral face positioned to ... | 05/27/2003 |
| 6393878 | Mortise lock A mortise lock is provided including a housing for a latch bolt and a deadbolt which are mounted in the housing for movement between a retracted position where the latch bolt and deadbolt are inside the housing and an extended position where a portion of ... | 05/28/2002 |
| 5516161 | Breakaway lever clutch with cam drive pin A door lever assembly having a locked and an unlocked position includes a trim housing and a lever handle rotatably connected to the trim housing. A cam is rotatably connected to the trim housing, and a pin mechanism is movably positionable to connect wit... | 05/14/1996 |
| 5505508 | Door lock assembly A lock assembly for a door includes an inner door handle to be mounted rotatably on an inner side of the door, an outer door handle to be mounted rotatably on an outer side of the door, a latch shaft unit including coaxial first and second latch shafts, e... | 04/09/1996 |
| 5301526 | Lock set with improved spindle mechanism A lock set for use with a deadbolt which includes an improved spindle mechanism is disclosed. The improved spindle mechanism permits the lock set to unlatch the deadbolt by rotating an inner knob without the need to operate a spindle-turning button.... | 04/12/1994 |
| 5284372 | Locking mechanism of a latch bolt A latch bolt includes an outer knob and an inner knob, a tube rotatably engaged in the inner knob, a button having one end engaged in the tube and having the other end extendible outward of the inner knob, and a barrel rotatably received in the tube. The ... | 02/08/1994 |
| 5005886 | Latch mechanisms A latch bolt assembly and a locking device for use in a latch mechanism which can be fitted to a door or the like. The latch bolt assembly includes a casing and a bolt device which is receivable within a guide passage in the casing for movement between la... | 04/09/1991 |
| 4866965 | Panic proof passage lock set Disclosed is a lock set for installation in a bored hole in a door having an inside thumb turn locking mechanism. A unique combination camming device, operated by both the thumb turn and independently by the internal spindle through the internal handle, p... | 09/19/1989 |
| 4848118 | Lock hold-back latch with anti-pick device Disclosed is an improvement in the lock mechanism described in U.S. Pat. No. 3,073,143. The improvement comprises barrier walls on the bolt which prevent a shim-type pick device from opening the lock mechanism. The barrier walls are positioned to prevent ... | 07/18/1989 |
| 4679416 | Trigger and latch bolt assembly A lock mechanism includes a casing structure adapted to be mounted to one of a door and a door frame for cooperation with an apertured strike plate mounted to the other of the door and door frame. The lock mechanism further comprises a front plate for the... | 07/14/1987 |
| 4632439 | Door latching apparatus A door latch (24) suitable for latching a door (20) to a door frame (22). The door latch (24), in a preferred embodiment, has an adjustable nose bolt (36); is "panic unlatchable"; and can be operated by axial or rotational spindle forces supplied by, for ... | 12/30/1986 |
| 4626008 | Door lock apparatus A locking prevention apparatus for attachment to the locking shaft of a passage lock door knob assembly for an interior door consists of a split ring of substantially rigid material which engages circumferentially the external surface of the locking shaft... | 12/02/1986 |
| 4305609 | Door lock A door lock for attachment to a door which can move into a position adjacent to a jamb having a door strike. The lock includes a support member formed from a pair of spaced, generally parallel sides and an end wall interconnecting the sides. The sides and... | 12/15/1981 |
| 4301667 | Tubular latch bolt retracting mechanism Retracting mechanism for a deadlocking latch bolt comprises a U-shaped frame extension for the latch bolt tube, having parallel side walls joined at the rear by an integral rear wall and held spaced at the front by out-turned tabs engaged in the tube and ... | 11/24/1981 |
| 4193620 | Door latch A door lock which includes inner and outer attachment plates for securement to a door carrying a latch operated by a rod from the exterior or the interior of an associated door, a locking slide movable toward and away from the rod which is held adjacent t... | 03/18/1980 |
| 4182528 | Door lock A door lock including a support member formed from a pair of spaced, generally parallel sides and an end wall interconnecting the sides. A shiftable, spring biased lock bolt is carried between the sides and movable through an opening in the end wall and i... | 01/08/1980 |
| 4118056 | Mortise lock A mortise lock having an entrance and apartment function and including a spring projected latch bolt, a latch bolt retracting mechanism having an L-shaped retractor rectilinearly moveable in response to rotation of either an inner or an outer rollback hub... | 10/03/1978 |
| 3954292 | Door latch with turnable lock button When turned to a locked position, a turn button causes the outside operating lever of the latch to be held against rotation so as to lock the door against entry from the outside. Turning of the inside operating lever in either direction to open the door c... | 05/04/1976 |
