Patent · US Expired

Electromagnetically actuated transmission brake

US7503438B2 · kind B2 · utility

1Cited by

9References

12Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Stefan Renner · Leonberg, DE
Reiner Keller · Stockach, DE
Markus Ulbricht · Tettnang, DE

Key dates

Filing date	Dec 3, 2003
Grant date	Mar 17, 2009
Priority date	—
Expiry date	Dec 19, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H3/12
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A transmission brake (1) is described, where one transmission shaft (3) can be braked to carry out an upshift operation. The aim of the invention is to provide a transmission brake that is devoid of any hydraulic or pneumatic actuation device and that requires very little axial installation space. Such a transmission brake (1) has one electromagnetic actuation device (6, 7, 8) with which the friction elements (4, 5) of the transmission brake (1) can be pressed against each other for actuating the brake.

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