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:
Jan. 11, 2000
Filed:
Mar. 30, 1999
Applicant:
Inventors:
Jeffrey Scott Hall, Winnebago, IL (US);
Mark Andrew Mantua, Freeport, IL (US);
David Elmer Olsen, Freeport, IL (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200 4304 ; 200 / ; 200 4307 ; 200 6162 ;
Abstract
An operating head assembly for a key operated safety switch contains within its housing two inwardly biased locking plates surrounding and locking an operating cam. A key with beveled faces forces the locking plates outward, freeing the cam to rotate. A cross bar on the key rotates the cam to the operating position. The safety switch is thus not easily defeated by simple devices.