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:
Mar. 15, 1983
Filed:
Jun. 14, 1978
Applicant:
Inventors:
Frederick W Haushalter, Kenton, OH (US);
Thomas J Lord, Dayton, OH (US);
Assignee:
United Aircraft Products, Inc., Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417540 ; 92 9 / ; 92 94 ; 138 31 ; 16510431 ;
Abstract
A fluid circulating system including a pump and an accumulator-reservoir device of the bootstrap type in which operation of the pump energizes the device to maintain a pressurized system despite an increasing fluid density caused by lowering fluid temperatures. A light spring force is applied which establishes a minimal system pressure effective even when the pump is shut off and which maintains in its proper convolution a rolling diaphragm comprised in the accumulator-reservoir device.