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. 23, 1981
Filed:
Jun. 04, 1979
Applicant:
Inventors:
Hiroshi Sakamaki, Utsunomiya, JP;
Toshiyuki Maeda, Ageo, JP;
Fumihiro Ushijima, Toyota, JP;
Tadashi Saitou, Toyota, JP;
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Primary Examiner:
Int. Cl.
CPC ...
F04C / ; F04C / ;
U.S. Cl.
CPC ...
418133 ; 418153 ;
Abstract
A rotary pump having a housing with a cylindrical cavity and end heads at each end to form a pump cavity. A drive shaft journaled by bearings carries a rotor having a number of movable vanes. Seal plates at each end of the pump cavity to divide it into a pair of end chambers defined by the seal plates and the end heads. Fluid inlet and discharge ports are provided in the sealing plates. The ports are formed as protrusions in the end plates towards the end chambers, as recesses therein or extending as openings into the end heads.