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:
Feb. 12, 1991
Filed:
Jun. 12, 1989
Applicant:
Inventor:
James R Pescetto, Springfield, IL (US);
Assignee:
Stewart Warner Hobbs Corporation, Springfield, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200 6186 ;
Abstract
A vacuum valve/switch assembly is presented. The switch is a combination of an electrical switch assembly and a vacuum dump valve, which operates in a predetermined sequence. The switch consists of a brass ferrule and two cantilever spring contact legs, identical to the existing cruise control brake switches. The vacuum valve consists of an 'O' ring in a groove on a floating valve stem. The floating action of the stem permits the 'O' ring to center itself in the valve seat. The 'O' ring seals by virtue of a compressing spring and the pressure gradient created by the vacuum.