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. 29, 1985
Filed:
Dec. 28, 1981
Applicant:
Inventors:
John M Hall, Uniontown, OH (US);
Milan Pantic, Akron, OH (US);
Assignee:
Goodyear Aerospace Corporation, Akron, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ; F01B / ;
U.S. Cl.
CPC ...
188347 ; 91173 ; 92 52 ; 92 60 ; 92 63 ; 92132 ; 188 724 ; 188348 ;
Abstract
A pair of axially aligned and nested pistons are mounted in a pressure sealed arrangement within the bore of a pressure housing. A primary piston is moved in response to increasing pressure to provide an actuating output force while a secondary piston simultaneously moves to overcome a reverse bias on it by a tension spring and adds to the actuating force by engaging the primary piston only when the pressure exceeds a specific higher threshold. The primary and secondary pistons thereafter operate in conjunction under the influence of high pressure to provide the output actuating force.