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:
Apr. 11, 1989
Filed:
Oct. 26, 1987
Applicant:
Inventor:
Jerry B Bishop, Wichita, KS (US);
Assignee:
Sigma-Tek, Inc., Augusta, KS (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ; F04C / ; F16C / ;
U.S. Cl.
CPC ...
418152 ; 418178 ; 418179 ; 384279 ; 384298 ; 384300 ;
Abstract
The invention comprises a rotary pump with sliding vanes with a self-lubricating solid coating covering the exterior end facing surfaces of the rotor and end facing surfaces of air transfer end plates. Additionally disclosed herein is a rotary pump with sliding vanes with a pair of bushings centrally located in the rotor with the internal bearing facing surfaces of the bushings covered with a self-lubricating solid coating.