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:
Jun. 24, 1986
Filed:
Feb. 20, 1985
Applicant:
Inventor:
Yoichi Hattori, Iwaki, JP;
Assignee:
Alps Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
2003022 ; 200340 ; 2001 / ;
Abstract
A push-button switch for use in the keyboard of an electronic typewriter, word processor, or the like comprises a casing, a stem extending through the casing for operating a movable contact, a top cover mounted on the outer end of the stem, a cylinder of an elastomeric material disposed between the top cover and the casing and loosely mounted on the outer periphery of the stem, and a circular retaining plate protruding from the outer end of the stem. The cylinder which biases the stem upward is resiliently mounted between the retaining plate and the casing, whereby the cylinder is maintained in a fixed condition.