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:
Oct. 30, 2001
Filed:
Nov. 24, 1999
Masaki Shinkawa, Yamato, JP;
Yutaro Tanaka, Tokyo, JP;
Harada Industry Co., Ltd., Tokyo, JP;
Abstract
An actuator for vehicle-door locking mechanism, includes a driving motor, a first deceleration mechanism for decelerating a rotation of the driving motor, a lead screw to which the rotation of the driving motor is transmitted through the first deceleration mechanism, a nut member fitted on the lead screw and moved in an axial direction of the lead screw in accordance with a rotation of the lead screw, an output mechanism for causing a door locking mechanism to perform one of a locking operation and an unlocking operation in association with the movement of the nut member, a second deceleration mechanism for decelerating a rotation of the lead screw, and an automatic bidirectional-returning mechanism to which the rotation of the lead screw is transmitted through the second deceleration mechanism, the automatic bidirectional-returning mechanism including a single home-returning coil spring for automatically returning the nut member to an initial position after the output mechanism performs one of the locking operation and the unlocking operation.