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:
Jun. 25, 1996
Filed:
Nov. 08, 1994
Applicant:
Inventors:
James R Harger, Rockford, IL (US);
LaVern R McCallips, Roscoe, IL (US);
Assignee:
Atwood Industries, Inc., Rockford, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05G / ;
U.S. Cl.
CPC ...
74517 ; 74529 ; 74540 ; 74 971 ;
Abstract
A spring acts on an operating member of a parking brake control and, when the brake is released, not only reduces the flyback energy resulting from the release but also stores such energy for use as a power assist during the next application of the brake. The spring acts on the operating member through a cam which removes the spring force from the operating member when the brake is fully released while progressively amplifying the spring force as the brake is progressively applied.