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:
Aug. 15, 2023
Filed:
Jan. 15, 2020
Applicant:
Kobelco Construction Machinery Co., Ltd., Hiroshima, JP;
Inventor:
Koji Ueda, Hiroshima, JP;
Assignee:
KOBELCO CONSTRUCTION MACHINERY CO., LTD., Hiroshima, JP;
Primary Examiner:
Int. Cl.
CPC ...
F15B 11/048 (2006.01); E02F 9/22 (2006.01); F15B 13/043 (2006.01);
U.S. Cl.
CPC ...
F15B 11/048 (2013.01); E02F 9/22 (2013.01); F15B 13/0433 (2013.01); F15B 2211/20523 (2013.01); F15B 2211/20546 (2013.01); F15B 2211/20576 (2013.01); F15B 2211/30565 (2013.01); F15B 2211/327 (2013.01); F15B 2211/329 (2013.01); F15B 2211/355 (2013.01); F15B 2211/36 (2013.01); F15B 2211/633 (2013.01); F15B 2211/6309 (2013.01); F15B 2211/6316 (2013.01); F15B 2211/6336 (2013.01); F15B 2211/6346 (2013.01); F15B 2211/6355 (2013.01); F15B 2211/6652 (2013.01); F15B 2211/67 (2013.01); F15B 2211/755 (2013.01); F15B 2211/853 (2013.01); F15B 2211/8606 (2013.01);
Abstract
Provided is a driving apparatus capable of effectively preventing impact at the stroke end in the hydraulic cylinder. The driving apparatus includes a hydraulic pump, a cylinder control valve, an operation member, a drive command input unit inputting a cylinder drive command corresponding to a cylinder operation applied to the operation member to the cylinder control valve, a cylinder stroke detection unit, a cylinder drive command restriction unit restricting the cylinder drive command in response to the cylinder stroke to stop a piston of a hydraulic cylinder before the stroke end.