Patent · US Active

Pneumatic actuator

US8739682B2 · kind B2 · utility

2Cited by

3References

8Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Bernd Dreyer · Taunusstein, DE
Joachim Schaefer · Darmstadt, DE
Erik Wiesinger · Heidesheim, DE

Key dates

Filing date	Sep 25, 2012
Grant date	Jun 3, 2014
Priority date	—
Expiry date	Sep 25, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R21/38
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A pneumatic actuator is provided for an active hood and includes a cylinder and a piston, which is movable in the cylinder between a lower terminal position, in which the volume of a chamber delimited by piston and cylinder, which may be impinged using compressed gas, is minimal, and an upper terminal position, in which the volume of the chamber is maximal. The piston is lockable in the lower terminal position by a detent body engaging in first recesses of the cylinder and the piston. A slider is displaceable by impingement using the compressed gas out of an idle position, in which it fixes the detent body in the first recesses, into a triggering position, in which a second recess of the slider overlaps with one of the first recesses and is capable, together with a single one of the first recesses of accommodating the detent body.

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