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:
May. 09, 1978
Filed:
Feb. 28, 1977
Applicant:
Inventor:
William B Emery, Kirkland, WA (US);
Assignee:
Korry Manufacturing Co., Seattle, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01H / ; H01H / ;
U.S. Cl.
CPC ...
200 / ; 200 / ; 2001 / ; 200276 ; 200302 ; 200314 ;
Abstract
A low-resistance electro-mechanical switch with snap-action tactile feel is disclosed comprising a base carrying one contact, a stepped guide post projecting from the base and carrying an opposing contact, and a conductive ring-like helical spring looped under tension around the guide post and serving as the bridging contactor. Instant complete switching is achieved with a snap action by advancing the spring against and abruptly past the step on the post, switching transients accompanying such snap action being avoided by the redundancy parallel paths that the several spring coils afford while settling in bridging position between the switch contacts.