Patent · US Active

Device for actuating a parking lock means of an automatic transmission and method for operating such a device

US11746902B2 · kind B2 · utility

0Cited by

4References

20Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Thomas Schwegler · Tettnang, DE
Sven Jabs · Weingarten, DE
Andreas Bisping · Friedrichshafen, DE
Florian Weinl · Gettorf, DE

Key dates

Filing date	Mar 20, 2020
Grant date	Sep 5, 2023
Priority date	—
Expiry date	Jul 26, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2061/1288
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A device (1) for actuating a parking lock device (2) of an automatic transmission includes a piston (3) guided in a cylinder (5) and hydraulically displaceable counter to a spring force of an actuation spring (4). The piston (3) is form-lockingly fixable in a first position and in a second position by radially displaceable blocking elements (26) of a blocking device (15). The blocking elements (26) are radially displaceable by an actuation element (17). The radial displacement path of the blocking elements (26) and an operating condition of the actuation element (17) corresponding thereto in the first position of the piston (3) deviate from the radial displacement path of the blocking elements (26) and the operating condition of the actuation element (17) corresponding thereto in the second position of the piston (3).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.