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7364211 |
Vehicle lock controlled by a shape memory alloy actuator
A contractible shape memory alloy (SMA) wire is used to throw a lever in a latch. The SMA actuator provides weight and space savings. In one embodiment, the SMA actuator is incorporated in the...
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6619704 |
Emergent unlatching mechanism for fire door latch assembly
This assembly relates to an emergent unlatching mechanism for the fire door latch which includes a guide tube and a connecting tube so assembled and attached to the interior of the fire door latch...
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6546770 |
Lock assembly
A lock assembly includes a barometric lock cylinder for actuating a latch assembly wherein the barometric lock cylinder including a lock body having an axial rotor hole and a plurality of marble...
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5839304 |
Locking device for a parking brake
A locking device for a parking brake on a bus having air brakes prevents accidental release of the parking brake when a sensing switch indicates that the bus should not move (e.g., when the driver...
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5809815 |
Lever lock assembly with a burglar-proof exterior handle
A lever lock assembly includes an interior handle assembly, an exterior handle assembly, a latch assembly, and a controlling assembly. When in a latched position, rotation of an exterior lever of...
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4921289 |
Cylindrical lever type lock structure for handicapped people
A cylindrical lever type lock is disclosed having first and second spindle housings telescopically receiving an outer and inner spindle, respectively. The outer and inner spindles both have a...
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4691948 |
Fail-secure lock system
A fail-secure lock apparatus includes a normally pneumatically actuated locking bolt that can be manually operated to withdraw the same in the event of a power failure. The apparatus incorporates a...
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