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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.:

US 10280949 B1

PDFFull Text
Date of Patent:
May. 07, 2019

Filed:

Feb. 07, 2017

Control device for hydraulic traveling device

Applicant:

Takeuchi Mfg. Co., Ltd., Nagano, JP;

Inventors:

Hiroki Kondo, Ueda, JP;

Shumpei Okutani, Ueda, JP;

Takeshi Kakuryu, Ueda, JP;

Takato Takizawa, Ueda, JP;

Tomonori Sato, Ueda, JP;

Assignee:

Takeuchi Mfg. Co., Ltd., Nagano, JP;

Attorney:

Studebaker & Brackett PC

Primary Examiner:

Michael Leslie

Assistant Examiner:

Matthew Wiblin

Int. Cl.
CPC ...
F15B 11/16 (2006.01); E02F 9/22 (2006.01); F16H 61/4008 (2010.01); F16H 61/4139 (2010.01); F16H 61/433 (2010.01); F16H 61/465 (2010.01); F16H 61/478 (2010.01); B60W 10/06 (2006.01); B60W 10/103 (2012.01); B60W 30/188 (2012.01); F15B 11/10 (2006.01); F16H 39/04 (2006.01); F16H 59/36 (2006.01); F16H 61/431 (2010.01);
U.S. Cl.
CPC ...
F15B 11/16 (2013.01); B60W 10/06 (2013.01); B60W 10/103 (2013.01); B60W 30/188 (2013.01); E02F 9/225 (2013.01); E02F 9/2225 (2013.01); E02F 9/2253 (2013.01); E02F 9/2267 (2013.01); E02F 9/2292 (2013.01); F15B 11/10 (2013.01); F16H 39/04 (2013.01); F16H 59/36 (2013.01); F16H 61/4008 (2013.01); F16H 61/4139 (2013.01); F16H 61/431 (2013.01); F16H 61/433 (2013.01); F16H 61/465 (2013.01); F16H 61/478 (2013.01); B60Y 2200/41 (2013.01); F15B 2211/20546 (2013.01); F15B 2211/25 (2013.01); F15B 2211/275 (2013.01); F15B 2211/56 (2013.01); F15B 2211/575 (2013.01); F15B 2211/633 (2013.01); F15B 2211/6316 (2013.01); F15B 2211/6346 (2013.01); F15B 2211/6355 (2013.01); F15B 2211/6651 (2013.01); F15B 2211/6652 (2013.01); F15B 2211/6653 (2013.01); F15B 2211/7053 (2013.01); F15B 2211/7058 (2013.01); F15B 2211/7135 (2013.01); F15B 2211/75 (2013.01); F15B 2211/78 (2013.01); F15B 2211/8613 (2013.01); F16H 2059/366 (2013.01);
Abstract

A travel control device is provided with hydraulic pumps of a variable capacity type that are driven by an engine; hydraulic motors that are driven by discharged oil from the hydraulic pumps; traveling devices that are rotation-driven by the hydraulic motors; a travel operation lever that is operated so as to instruct a traveling operation; a first control valve for generating a charged hydraulic pressure by adjusting the discharged oil from a charge pump and a second control valve for generating a capacity control hydraulic pressure in accordance with the operation of the travel operation lever. The first control valve is designed to pressure-adjust and generate a charged hydraulic pressure in accordance with the rotation speed of the engine, and the hydraulic pump is subjected to a variable capacity control process by a capacity control hydraulic pressure that is pressure-adjusted and generated by the second control valve.

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