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:
Aug. 07, 1979
Filed:
May. 20, 1977
Applicant:
Inventor:
William K Engel, Peoria, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F16D / ;
U.S. Cl.
CPC ...
60488 ;
Abstract
In a radial piston pump-radial piston motor drive system, a centrifugal replenishing pump is provided integral with the pump driving means. The radial-piston pump, radial piston motor, centrifugal replenishing pump, and most of the fluid circuit, including fluid sump are all contained within a unitary housing to provide a compact self-contained pump-motor hydrostatic unit.