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:
Jan. 07, 2014
Filed:
Nov. 30, 2010
Kazuhisa Tsutsumi, Tokyo, JP;
Noguchi Toshihide, Tokyo, JP;
Yasuhiro Korematsu, Tokyo, JP;
Masayuki Shimizu, Tokyo, JP;
Alasdair Robertson, Midlothian, GB;
Uwe Stein, Midlothian, GB;
Hauke Karstens, London, GB;
Kazuhisa Tsutsumi, Tokyo, JP;
Noguchi Toshihide, Tokyo, JP;
Yasuhiro Korematsu, Tokyo, JP;
Masayuki Shimizu, Tokyo, JP;
Alasdair Robertson, Midlothian, GB;
Uwe Stein, Midlothian, GB;
Hauke Karstens, London, GB;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
A hydraulic pump unit includes a cylindrical member that is fit into an outer circumference of the main shaft and a hydraulic pump body arranged on an outer circumferential side of the cylindrical member. The hydraulic pump body includes a ring cam mounted on the outer circumference of the cylindrical member, a pump bearing, a pump housing, a plurality of pistons housed in the pump housing and actuated by the ring cam, and a plurality of cylinders which guide the plurality of pistons in a radial direction and are arranged in a circumferential direction. The hydraulic pump unit is configured such that the pump unit is insertably fixed to the main shaft by the cylindrical member.