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:
May. 09, 1995
Filed:
Oct. 25, 1993
Applicant:
Inventors:
George L Bennett, Hebron, CT (US);
Jack G Sundberg, Meriden, CT (US);
Assignee:
Coltec Industries Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ; F04R / ;
U.S. Cl.
CPC ...
417 69 ; 417203 ; 417205 ; 417350 ;
Abstract
A unified fuel pump assembly combines a vane-type pump and a booster stage for the inlet of the vane-type pump, in a unitary structure to substantially reduce 'windage' losses caused by relatively moving parts. The unified structure also includes an electric motor subassembly to provide motive power, and a liquid ring pump, which helps to process air bubbles through the fuel pump, is coupled to the electric motor rotor to further avoid 'windage' losses. The vane type pump relies on the use of a central shaft capable of having a substantially uniform and relatively large diameter from end to end.