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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 10364792 B1

PDFFull Text
Date of Patent:
Jul. 30, 2019

Filed:

Sep. 22, 2017

Braking system for a hydraulic machine

Applicant:

Poclain Hydraulics Industrie, Verberie, FR;

Inventors:

Julien Engrand, Breuil le Sec, FR;

Stéphane Vidal, Longueil Sainte Marie, FR;

Gilles Grillon, Sacy le Grand, FR;

Bertrand Bonnomet, La Croix Saint Ouen, FR;

Assignee:

POCLAIN HYDRAULICS INDUSTRIE, Verberie, FR;

Attorney:

The Webb Law Firm

Primary Examiner:

Vishal R Sahni

Int. Cl.
CPC ...
F16D 13/52 (2006.01); F03C 1/047 (2006.01); F03C 1/04 (2006.01); F16D 65/18 (2006.01); F03C 1/40 (2006.01); F16D 55/40 (2006.01); F04B 1/04 (2006.01); F04B 1/047 (2006.01); F04B 1/06 (2006.01); F04B 49/02 (2006.01); B60K 7/00 (2006.01); B60T 1/06 (2006.01); B60T 13/22 (2006.01); F16D 55/38 (2006.01); F16D 55/00 (2006.01); F16D 121/12 (2012.01);
U.S. Cl.
CPC ...
F03C 1/0472 (2013.01); F03C 1/0403 (2013.01); F03C 1/047 (2013.01); F03C 1/0447 (2013.01); F04B 1/0404 (2013.01); F04B 1/047 (2013.01); F04B 1/06 (2013.01); F04B 49/02 (2013.01); F16D 13/52 (2013.01); F16D 55/40 (2013.01); F16D 65/186 (2013.01); B60K 7/0015 (2013.01); B60K 2007/0092 (2013.01); B60T 1/065 (2013.01); B60T 13/22 (2013.01); F16D 55/38 (2013.01); F16D 2055/0058 (2013.01); F16D 2121/12 (2013.01);
Abstract

A hydraulic machine () comprising first and second brake elements (), a spring washer () tending to urge the first and second brake elements () in a braking direction, and a brake release piston () configured to act on the spring washer () in a direction opposing the braking direction, the hydraulic machine being characterized in that the brake release piston () comprises a primary brake release piston () associated with a primary brake release chamber (), and a secondary brake release piston () associated with a secondary brake release chamber (), said primary and secondary chambers () extending radially around the shaft () in such a manner that projections of the primary brake release chamber () and of the secondary brake release chamber () onto a plane perpendicular to a longitudinal axis (X-X) defined by the axis of rotation of the hydraulic machine () are superposed, at least in part.

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