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US 6,374,650 B1Granted
Lock mechanism
AssigneeLockwood Australia Pty Ltd.
InventorDonald John Newman
Life of this patent
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AssigneeLockwood Australia Pty Ltd.
InventorDonald John Newman
Estimating the term…
The invention is concerned with a lock mechanism of the kind having a deadbolt (9) which is operable by either an inside actuator or an outside actuator. The inside actuator usually includes a turn knob or the like, and the outside actuator usually includes a key operated lock. The lock mechanism includes a gear train (8) through which each of the two actuators is drivably connected to the deadbolt (9). The gear train includes two drive gears (13, 14) which are independently rotatable about a common axis of rotation, and each is connected to a respective one of the two actuators so as to rotate in response to operation of that actuator. The gear train (8) also includes two driven gear (17, 18) which are united to form a single piece composite gear (16), and each driven gear (17, 18) is cooperable with a respective one of the two drive gears (13, 14). The composite gear (16) is connected to the deadbolt (9) so that the deadbolt (9) moves between operative and inoperative positions in response to rotation of the composite gear (16). Each actuator adopts a rest position when the deadbolt (9) is in the inoperative position, and neither drive gear (13, 14) cooperatively engages with the composite gear (16) when the respective actuator is in the rest position. Furthermore, the gear arrangement is such that the outside actuator turns through 360° to cause the deadbolt (9) to move from one of its positions to the other, whereas 180° rotation of the inside actuator is sufficient to effect the same degree of deadbolt movement
A lock mechanism including, a deadbolt which is movable between an operative position and an inoperative position, first and second independently operable rotatable actuators, a gear train through which each said actuator is drivably connected to said deadbolt and which includes first and second drive gears and first and second driven gears, said first and second drive gears being arranged for relative rotation about a common axis and being drivably connected to said first and second actuators respectively, said driven gears forming respective parts of a rotatable composite gear, said first and second drive gears cooperating with said first and said second driven gears respectively so that said composite gear rotates in response to rotation of either said drive gear, drive means drivably connecting said composite gear to said deadbolt so that the deadbolt moves between said operative and inoperative positions in response to rotation of said composite gear, and said first and second drive gears cooperate with their respective driven gears in a manner such that said deadbolt moves from one said position to the other in response to 360° rotation of said first actuator and moves from one said position to the other in response to substantially less than 360° rotation of said second actuator.
A lock mechanism comprising, a deadbolt movable between an operative position and an inoperative position, first and second independently operable rotatable actuators, a gear train through which each said actuator is drivably connected to said deadbolt, said gear train including first and second drive gears and first and second driven gears, said first and second drive gears arranged for relative rotation about a common axis and being drivably connected to said first and second actuators respectively so that each rotates in response to operation of a respective one of said actuators, said first and second driven gears forming respective parts of a rotatable composite gear, said first and second drive gears cooperating with said first and said second driven gears respectively so that said composite gear rotates in response to operation of either one of said actuators with consequent rotation of the drive gear connected to the operative actuator, drive means drivably connecting said composite gear to said deadbolt so that said deadbolt moves between said operative and inoperative positions in response to rotation of said composite gear, and said first and second drive gears cooperate with their respective driven gears in a manner such that said deadbolt moves from one said position to the other in response to 360° rotation of said first actuator and moves from one said position to the other in response to substantially less than 360° rotation of said second actuator.
Dependencies are inferred from the claim text.