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:
Jun. 21, 2022
Filed:
Jul. 27, 2018
Applicant:
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JP;
Inventors:
Tadahiko Kuroda, Akashi, JP;
Takayuki Masuda, Kobe, JP;
Takeshi Matsuura, Nishinomiya, JP;
Yuki Kato, Akashi, JP;
Assignee:
KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 1/328 (2020.01); F04B 43/12 (2006.01); F04B 49/06 (2006.01); F04B 51/00 (2006.01); F15B 19/00 (2006.01);
U.S. Cl.
CPC ...
F04B 1/328 (2013.01); F04B 43/1207 (2013.01); F04B 49/065 (2013.01); F04B 51/00 (2013.01); F15B 19/005 (2013.01);
Abstract
A failure diagnosing device configured to diagnose failure of a swash plate pump includes: a history acquiring portion configured to acquire actual history data, the actual history data indicating a time-lapse change of the suction flow rate or suction pressure in a predetermined period of time; and a failure detecting portion configured to detect generation of an abnormality between a piston and a shoe based on the actual history data acquired by the history acquiring portion.