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:
Nov. 16, 1976
Filed:
Jul. 21, 1975
Applicant:
Inventor:
Raymond H Hannula, West Allis, WI (US);
Assignee:
Allen-Bradley Company, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
200 6139 ;
Abstract
A housing defines a fluid enclosure which contains a gear pump having a driving gear that couples for rotation by a shaft. When the shaft rotates, the gear pump forces fluid through one of two fluid passages in the housing against the force of a valve spring. A torque which remains relatively constant over a wide range of shaft speeds is thus applied to the housing, and in reaction the housing rotates to operate an electrical switch.