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:
Dec. 18, 2012
Filed:
Jan. 22, 2008
Jean Heren, Margny les Compiegne, FR;
Philippe Lucienne, Aumont en Halatte, FR;
Andre Prigent, Saintines, FR;
Cyrille D'hersignerie, Canly, FR;
Jean Heren, Margny les Compiegne, FR;
Philippe Lucienne, Aumont en Halatte, FR;
Andre Prigent, Saintines, FR;
Cyrille D'Hersignerie, Canly, FR;
Poclain Hydraulics Industrie, Verberie, FR;
Abstract
A hydrostatic transmission including a main pump, two main ducts serving respectfully as feed and as discharge for first and second hydraulic motors that serve to drive disposed one after the other. A bypass valve can take up a reduced-speed position in which the feed main orifices are connected to the discharge main duct, and an increased-speed position in which one of the motors is bypassed, the feed main orifice of the motor being connected to the discharge main duct via a bypass link, while the other main orifices continue to have their respective links. The apparatus further includes a constriction suitable for being activated to restrict the flow of fluid through the bypass link.