Patent · US Expired

Device for counterbalancing a swivelable body part on a motor vehicle

US4291501A · kind A · utility

29Cited by

6References

5Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Klaus Steinberg · Moosburg an der Isar, DE
Gerhard Hoffmann · Otterstadt, DE

Key dates

Filing date	Feb 23, 1979
Grant date	Sep 29, 1981
Priority date	—
Expiry date	Feb 23, 1999

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE05Y2900/548
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A device for counterbalancing a swivelable body part on a motor vehicle, especially a trunk lid on an automobile, said device including a hinge for the swivelable body part and a torsion bar, the torsion bar being bent to form a crank in the vicinity of a movable hinge part. An intermediate lever is articulated on the movable hinge part and engages the crank, the crank including a crank pin between two legs, the legs being connected by arcuate segments both with the crank pin and with the torsion bar. The legs are made S-shaped so as to minimize waste, provide ease of manufacture and small installation space requirements for the crank.

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