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. 26, 1977
Filed:
Feb. 07, 1975
Applicant:
Inventor:
Ralph Anthony Matzelle, Brimfield, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
F01B / ;
U.S. Cl.
CPC ...
91487 ;
Abstract
A hydraulic fluid pressure energy translating device comprising an axial multi-piston pump including an axially and laterally constrained barrel and a floatingly disposed port plate responsive to hydrostatic forces within the pump. The port plate includes hydrostatic pressure balancing means which tend to balance hydrostatic forces acting on the port plate during operation of the pump to maintain an optimum bearing clearance between the port plate and barrel, thereby controlling fluid leakage and maintaining adequate lubrication and support at this interface.