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:
Feb. 28, 2012
Filed:
Nov. 26, 2008
Giovanni Pepe, Grottaglie, IT;
Pasquale Palumbo, Vignola, IT;
Giovanni Pepe, Grottaglie, IT;
Pasquale Palumbo, Vignola, IT;
Magneti Marelli Powertrain S.p.A., Corbetta, IT;
Abstract
A hydraulic circuit of a servo-assisted mechanical transmission, which is provided with a number of hydraulic actuators provided with corresponding actuation chambers adapted to be filled with pressurized oil; the hydraulic circuit is provided with: a number of solenoid valves, each of which is coupled to a corresponding actuation chamber of a hydraulic actuator; a tank, which contains the oil at atmospheric pressure and is provided with an upper loading aperture; the cap, which closes the loading aperture of the tank and is provided with a through venting hole which puts the tank into communication with the external environment; a filtering element, which is coupled to the cap and is arranged under the venting hole; a hydraulic accumulator containing the pressurized oil; and an electric pump which draws from the tank and feeds the hydraulic accumulator.