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. 11, 2026
Filed:
Mar. 24, 2021
Poclain Hydraulics Industrie, Verberie, FR;
Gilles Grillon, Verberie, FR;
Julien Engrand, Verberie, FR;
Jérémy Gérard Respecte, Verberie, FR;
Dominique Costaz, Verberie, FR;
Loïc Bonnard, Verberie, FR;
POCLAIN HYDRAULICS INDUSTRIE, Verberie, FR;
Abstract
The hydraulic machine comprises: —a fixed part, —a part mounted so as to rotate about an axis (O-O) with respect to the fixed part, —a stack () of discs () forming a brake or clutch, the discs being able to be in abutment against one another by way of friction surfaces () having a mean friction radius (Rf) with respect to the axis, —a push rod () that is able to push the discs into abutment against one another, in a direction parallel to the axis, over a thrust surface (), the thrust surface having a mean thrust radius (Rp) with respect to the axis which extends to within or beyond the mean friction radius (Rf). The push rod () has a radial annular notch () indenting the push rod from an opposite side of the push rod from the axis (O-O) when the mean thrust radius (Rp) extends beyond the mean friction radius (Rf), and otherwise from the side of the push rod closest to the axis.