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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 9150091 B1

PDFFull Text
Date of Patent:
Oct. 06, 2015

Filed:

Sep. 30, 2010

Liquid pressure circuit

Applicants:

Tsuneo Endo, Wako, JP;

Shigeru Ibaraki, Wako, JP;

Kazutaka Takahashi, Wako, JP;

Daiki Sato, Wako, JP;

Seiichiro Ishikawa, Wako, JP;

Inventors:

Tsuneo Endo, Wako, JP;

Shigeru Ibaraki, Wako, JP;

Kazutaka Takahashi, Wako, JP;

Daiki Sato, Wako, JP;

Seiichiro Ishikawa, Wako, JP;

Assignee:

Honda Motor Co., Ltd., Tokyo, JP;

Attorneys:

Carrier Blackman & Associates, P.C.

Joseph P. Carrier

Anne G. Sabourin

Primary Examiner:

Edward Look

Assistant Examiner:

Michael Quandt

Int. Cl.
CPC ...
B60K 6/12 (2006.01); B60K 6/40 (2007.10); F02N 7/08 (2006.01); F16K 3/26 (2006.01); F16K 3/34 (2006.01); F15B 13/04 (2006.01); F15B 13/044 (2006.01);
U.S. Cl.
CPC ...
B60K 6/12 (2013.01); B60K 6/40 (2013.01); F02N 7/08 (2013.01); F16K 3/262 (2013.01); F16K 3/34 (2013.01); F15B 13/0406 (2013.01); F15B 13/0444 (2013.01); Y02T 10/6208 (2013.01); Y02T 10/6282 (2013.01); Y10T 137/3127 (2015.04); Y10T 137/8671 (2015.04); Y10T 137/86533 (2015.04); Y10T 137/86702 (2015.04); Y10T 137/86734 (2015.04); Y10T 137/86751 (2015.04); Y10T 137/88022 (2015.04);
Abstract

A liquid pressure circuit is provided in which connecting an accumulator () to a high pressure liquid path (Lh) by opening a cut-off valve () and connecting a intake liquid path (Li) to the high pressure liquid path (Lh) by means of a switch valve () enables a pump/motor (M) to be operated as a motor by liquid stored under pressure in the accumulator (), connecting the accumulator () to the high pressure liquid path (Lh) by opening the cut-off valve () and connecting the intake liquid path (Li) to a low pressure liquid path (Ll) by means of the switch valve () enables the pump/motor (M) to be operated as a pump to thus store liquid of a tank () under pressure in the accumulator (), and closing the cut-off valve () and connecting the intake liquid path (Li) to the high pressure liquid path (Lh) by means of the switch valve () enables the pump/motor (M) to rotate without load; it is therefore possible to switch between three circuits, that is, drive (motor operation), regeneration (pump operation), and neutral (load-free running) by a simple structure with a small number of components.

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