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:
Jul. 20, 1999
Filed:
Sep. 28, 1998
Tatsuaki Kawase, Miyagi-ken, JP;
Eiji Kimura, Miyagi-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A push switch including a rotatably supported movable contact member with a movable contact portion which comes into contact with and separates from a stationary contact; and a cam shaft rotatably disposed between the lower surface of a plunger and the movable contact member. The switching driver portion of the cam shaft slides on the movable contact member. The force used to push down the plunger is exerted on the movable contact member through the switching driver portion to tilt the movable contact member. The push switch also includes a switching guide protrusion, which is provided at the movable contact member, for always guiding the switching driver portion of the cam shaft towards the raised end portion of the movable contact member, in accordance with the direction in which the movable contact member tilts; a coil spring for biasing the cam shaft and automatically restoring it back to its original position, and for biasing the plunger upward; and a cam member which is rockably supported on the movable contact member and receives the lower end of the coil spring. The push switch is more durable and provides a more reliable contact.