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:
Oct. 06, 2015
Filed:
Apr. 01, 2010
Bruno Le Briere, Paris, FR;
Clement Laplane, Vincennes, FR;
Jean-pierre Michel Lepine, L'etang la Ville, FR;
Bruno Le Briere, Paris, FR;
Clement Laplane, Vincennes, FR;
Jean-Pierre Michel Lepine, L'etang la Ville, FR;
GEOSERVICES EQUIPEMENTS, Paris Nord II, FR;
Abstract
This device comprises a cable working line bearing a lower assembly and a winch for maneuvering the line. The hydraulic central unit () of the winch includes a tank () for storing a hydraulic control fluid, a pump () for driving the hydraulic fluid, connected to the tank () through an upstream conduit () and at least one hydraulic motor () for driving the drum () connected to the pump () through an intermediate conduit and connected to the tank () through a downstream conduit. The hydraulic central unit comprises a regulator () for the hydraulic fluid flow rate at the outlet of the pump (). The regulator () is driven according to at least one hydraulic fluid pressure depending on the load exerted on the motor () by the rotary drum (), said or each pressure being directly taken on one of said conduits.