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. 23, 2024
Filed:
Feb. 13, 2020
Applicant:
Kyb Corporation, Tokyo, JP;
Inventors:
Assignee:
KYB CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 49/12 (2006.01); F04B 49/00 (2006.01); F04B 1/122 (2020.01); F04B 49/08 (2006.01); F04B 49/22 (2006.01);
U.S. Cl.
CPC ...
F04B 49/12 (2013.01); F04B 1/122 (2013.01); F04B 49/002 (2013.01); F04B 49/08 (2013.01); F04B 49/22 (2013.01);
Abstract
A pump displacement control device includes: a servo piston that changes a tilt angle; a flow rate control spool that is displaced corresponding to an input pressure; a power control spool that is displaced corresponding to a discharge pressure of the pump; a control pressure regulating spool that regulates a control pressure which controls the servo piston; and a feedback lever connected to the servo piston and the control pressure regulating spool. The feedback lever directly abut on either one of the flow rate control spool or the power control spool for regulating the control pressure.