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:
Dec. 06, 1988
Filed:
Aug. 24, 1987
Applicant:
Inventors:
Yoshimichi Akasaka, Tsuchiura, JP;
Ichiro Nakamura, Katsuta, JP;
Ken Ichiryu, Ibaraki, JP;
Eiji Kometani, Abiko, JP;
Yasuharu Gotoh, Tsuchiura, JP;
Assignees:
Hitachi Ltd., Tokyo, JP;
Hitachi Construction Machinery, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B / ; F16C / ;
U.S. Cl.
CPC ...
91486 ; 91499 ; 91504 ; 92 122 ; 92 57 ; 384121 ;
Abstract
A thrust hydrostatic bearing device for use in an axial piston machine includes a bearing sleeve fitted into a housing cover for rotatably supporting a drive shaft through a bearing and having a plurality of hydrostatic pads. The hydrostatic pads are disposed at locations which are symmetrical with respect to an axis lying in a cross-section taken perpendicular to the drive shaft, and these pads increase the performance and durability of the thrust hydrostatic bearing device for use in an axial piston machine.