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. 20, 1987
Filed:
Apr. 28, 1986
Applicant:
Inventor:
Teiichi Miura, Furukawa, JP;
Assignee:
Alps Electric Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05G / ; H01H / ;
U.S. Cl.
CPC ...
7448 / ; 200 / ; 200 / ;
Abstract
Simultaneous actuation of switches belonging to separate columns in a switch matrix is prevented by means of opposed preventing members which slide strokes of predetermined length in opposed directions. The preventing members having competing sections formed on opposite sides of a gap which is less than twice the length of the predetermined stroke and these sections compete for space in the gap when their respective preventing members slide so that only one preventing member can slide the full length of its stroke at a time.