Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7313937 | Latch A latch is disclosed that can be applied to doors in a variety of orientations and/or with keepers in a variety of orientations without any modifications to the latch being necessary. The latch includes a first module that carries a handle and an actuating member, a... | 01/01/2008 |
| 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 |
| 7178842 | Push button lock mechanism for a handle set A handle set includes a handle assembly having an operator, a rose insert, and a shank having a bore. The rose insert has a central opening and a post. The shank is affixed to the operator and rotatably received in the central opening. A rotational stop is coupled t... | 02/20/2007 |
| 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 |
| 7152891 | Field-reversible locking mechanism A lockset for use in a door assembly is provided and includes an interior mechanism having a first escutcheon, a first housing, and a first retainer shield and an exterior mechanism having a second escutcheon, a second housing, and a second retainer shield. In addit... | 12/26/2006 |
| 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 |
| 7100407 | Handled lock set for a door A lock set includes a hollow intermediate spindle connected to a door latch and to an inner handle assembly, a turning rod extending inside the intermediate spindle, a coupler connected to a key-operated lock of an outer handle assembly so as to be turned thereby an... | 09/05/2006 |
| 7073829 | Restoring structure of a lock A restoring structure of a lock comprises: a sleeve disk, having a first wall and a second wall, the first wall interconnecting a first face and a second face, and the second wall interconnecting the second face and a third face, the first face and the second face d... | 07/11/2006 |
| 6926315 | Push pull latch bolt mechanism The present invention relates to a latch bolt mechanism for a hinged door, and in particular, to a latch bolt mechanism actuated by push pull spindles. The latch bolt mechanism includes a bolt with an inclined surface, a housing, at least one push pull spindle with ... | 08/09/2005 |
| 6926319 | Rose locking mechanism A rose locking mechanism developed with a hybrid lock architecture for a door designed to incorporate the functionality of a cylindrical lock architecture with the ease of installation of a tubular lock architecture is provided by the present invention. The hybrid l... | 08/09/2005 |
| 6916053 | Latch lock A structure for a latch lock that opens or closes a door without deadlocking it essentially comprised of a front body and a rear body each provided with a round plate locked into to each other with the latch bolt inside a recess of a door panel being placed in a spa... | 07/12/2005 |
| 6334635 | Latch bolt mechanism of a tubular lock with adjustable backset by an extension casing A latch bolt mechanism of a tubular lock allows adjustment in backset by using an extension casing. The latch bolt mechanism has a latch bolt housing having a latch bolt mounted therein, the latch bolt being movable beyond a face plate or retracted into t... | 01/01/2002 |
| 5896764 | Lock adapted to be accommodated within the thickness of an opening panel A lock which can be accommodated within the thickness of an opening panel includes two nuts rotatable about a common axis and attached to respective corresponding operating members. Each nut can turn freely about its axis relative to the other nut. The la... | 04/27/1999 |
| 5678870 | Reversible mortise lock A reversible mortise lock comprising a casing, a latch bolt and a pair of spindle hubs disposed within the casing. Each spindle hub is independently pivotable about a fixed axis and has a slot. The latch bolt moves from an extended position to a retracted... | 10/21/1997 |
| 5395144 | Non-handed door latch for passage and privacy functions A door latch for passage and privacy applications provides capability for non-handed installation as well as independent bolt operating cams which may be selectively locked or may be unlocked by retraction of the bolt or by pushing the bolt inward when th... | 03/07/1995 |
| 5259652 | Door latch assembly A latch assembly comprising a housing; a latch element retractably mounted in said housing; a spindle extending transversely through the housing and rotatably mounted therein; an operative connection between the spindle and the latch element whereby the l... | 11/09/1993 |
| 5125696 | Cylindrical lock assembly 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 (... | 06/30/1992 |
| 5090752 | Door latch device with reciprocatably moveable privacy lock control member A latch device including a privacy lock control member reciprocatably moveable along a first predetermined path of movement, a manually operable member for reciprocatably moving said control member in a direction generally opposed to the direction of move... | 02/25/1992 |
| 4997220 | Door latch device A latch device including a privacy lock control member reciprocatably moveable along a first predetermined path of movement, and a manually operable member for reciprocatably moving said control member in a direction generally opposed to the direction of ... | 03/05/1991 |
| 4695082 | Reversible mortise lock A reversible mortise lock including a housing having a front plate and side walls, and a latch movable between an extended position in which it projects through the front plate, and a retracted position. Two spindle hubs, for cooperation with the spindles... | 09/22/1987 |
| 4502720 | Door latch apparatus A door latch mechanism for controllably securing a door, the latch mechanism of the type having a spindle and operating handles, comprises a fusible connecting member rigidly attaching the handle and spindle at room temperature, the fusible connecting mem... | 03/05/1985 |
| 4437695 | Knob retainer blocker mechanism A door lock mechanism in which the outside knob is seamed against knob retainer, the retainer is diametrically slidable in the knob sleeve and has a specially shaped opening which defines a thrust-receiving edge for engagement by a spring which straddles ... | 03/20/1984 |
| 4108482 | Disengaging spindle locking mechanism A disengaging spindle locking mechanism for the latch bolt of a mortise type lock is actuated by the locking slide which is normally employed to engage a retractor hub to prevent the hub from being rotated. At the inner end of a split spindle where it is ... | 08/22/1978 |
