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:
Sep. 29, 2020
Filed:
Jul. 19, 2018
Transmisiones Y Equipos Mecánicos, S.a. DE C.v., Queretaro, MX;
Jannick De Landtsheere, Assebroek, BE;
Abstract
A parking lock actuation system for an automatic gearbox of a vehicle is described. The parking lock actuation system has a closed state in which a piston rod of a hydraulic cylinder is in a first position urging a locking pawl to block a gear of the automatic gearbox, and an open state in which the piston rod of the hydraulic cylinder is in a second position preventing the locking pawl from engaging the gear of the automatic gearbox. The parking lock actuation system further includes a first hydraulic valve being connected to a first hydraulic line, to a pressure source and a substantially non-pressurized reservoir, and a second hydraulic valve being connected to a first volume of the hydraulic cylinder, to the first hydraulic line and a non-pressurized reservoir. The first hydraulic valve includes an electrical actuator.