The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 1993
Filed:
Mar. 19, 1992
Fumio Kobayashi, Yokohama, JP;
Ohi Seisakusho Co., Ltd., Yokohama, JP;
Abstract
A door lock system comprises a door latch device which has a locking-unlocking lever. The door latch device is locked and unlocked when the locking-unlocking lever assumes lock and unlock positions respectively. An electric actuator includes a reversible electric motor and a pivotal operation lever which is actuated by the electric motor. The operation lever is connected to the locking-unlocking lever in such a manner when the operation lever assumes locking and unlocking positions, the locking-unlocking lever assumes the lock and unlock positions respectively. A first device senses a theft protecting operation which causes the operation lever to pivot from the unlocking position to the locking position. A second device locks the operation lever at the locking position when the first device senses the theft protecting operation.