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. 05, 2023
Filed:
Mar. 20, 2020
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Thomas Schwegler, Tettnang, DE;
Sven Jabs, Langenargen, DE;
Andreas Bisping, Friedrichshafen, DE;
Florian Weinl, Bodolz, DE;
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Abstract
A device () for actuating a parking lock device () of an automatic transmission includes a piston () guided in a cylinder () and hydraulically displaceable counter to a spring force of an actuation spring (). The piston () is form-lockingly fixable in a first position and in a second position by radially displaceable blocking elements () of a blocking device (). The blocking elements () are radially displaceable by an actuation element (). The radial displacement path of the blocking elements () and an operating condition of the actuation element () corresponding thereto in the first position of the piston () deviate from the radial displacement path of the blocking elements () and the operating condition of the actuation element () corresponding thereto in the second position of the piston ().