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:
Jun. 07, 1988
Filed:
Aug. 28, 1986
Daniel Leroy, Yvelines, FR;
Jean-Francois Boellman, Beauchamp, FR;
Compagnie de Construction Mecanique Sulzer, Mantes la Jolie, FR;
Abstract
A hydromechanical torque transmission device comprises three coaxial rotatable bodies. These are a driving body, an intermediary body and a driven body. The driving and driven bodies are adapted to be coupled to respective coaxial shafts that are to be coupled together in rotation. A speed correlator system is adapted to maintain the speeds of the driving and driven bodies relative to the intermediary body in a predetermined ratio. The intermediary body comprises a hydraulic circuit. The driving and intermediary bodies define a first pump adapted to cause a flow of fluid in this hydraulic circuit. The intermediary and driven bodies define a second pump also adapted to cause a flow of fluid in the hydraulic circuit. One at least of the first and second pumps has a variable volumetric capacity. The device also comprises means for controlling variations in this variable volumetric capacity.