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:
Sep. 01, 1998
Filed:
Aug. 16, 1995
Masaichi Hattori, Aichi, JP;
Osamu Shoji, Aichi, JP;
Kabushiki Kaisha Tokai Rika Denki Seisakusho, Aichi, JP;
Abstract
A stopper plate includes a through hole to which a lock plate moving in an arrow Y direction when a detent knob is operated can make access and a trapezoidal part contiguous to the through hole. It can move back and forth between a lock position where the trapezoidal part is opposed to the lock plate and an unlock position where the through hole 13a is opposed to the lock plate, it is energized in the unlock position by a first compression coil spring at the normal time. A cam member is coupled to the stopper plate via a second compression coil spring 18 having a spring force larger than the first compression coil spring, and receives a move force in an unlock position direction by cam action between the cam member and the lock plate. A spring force of the second compression coil spring is set smaller than the resultant force of a plunger holding force by an electromagnetic solenoid and a spring force of the first compression coil spring.