Gear shift lock

Locks – Special application – For control and machine elements

Patent

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Details

70247, 70195, F16H 5700

Patent

active

058098135

ABSTRACT:
A lock adapted for use in automatic gear shifts and mounted in a gear shift head, including a core, a stop block, an escutcheon, and a cylinder. The core has latch bolts at either side, a keyway at a front end, and a projection at a rear end. The stop block has a stop hole at a front end for receiving the projection of the core, and a stop projection at a rear end. The escutcheon has an insertion hole at a front end, the insertion hole having a cross section comprised of an oval shape and a rectangular shape sized to match the stop block, a through hole at a rear end, and a lock post that passes through the through hole, the lock post including a head portion of a larger size and a press piece projecting from the rear end of the escutcheon. A spring is fitted over the press piece and that part of the lock post exposed on the outside of the rear end of the escutcheon. A lock spring is further provided on the escutcheon near the press piece and adapted to urge against the inner wall of the gear shift head. The position of said press piece corresponding to that end of a push button mounted inside the gear shift head. The cylinder has an opening at a front end for passage of a key, and a cylinder hole communicating with the opening for receiving the core. When the lock is unlocked, the press piece is pressed by the push button of the gear shift to displace and permits gear shifting. When the lock is locked, the gear shift is prevented from operation as the gear shift is stopped by the stop projection of the stop block.

REFERENCES:
patent: 962448 (1910-06-01), Miller
patent: 999462 (1911-08-01), Miller
patent: 1159973 (1915-11-01), Marhenke
patent: 1638688 (1927-08-01), Fipps
patent: 4747278 (1988-05-01), Roncelli et al.
patent: 5081856 (1992-01-01), Hsu
patent: 5134764 (1992-08-01), Taylor
patent: 5329792 (1994-07-01), Lee
patent: 5546775 (1996-08-01), Lee
patent: 5596894 (1997-01-01), Lee

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