Patent · US Expired

Corrugated spring with gradual progressive spring characteristic

US7334784B2 · kind B2 · utility

5Cited by

6References

4Claims

0Family size

Assignee

MUHR UND BENDER KG · DE

Inventors

Vladimir Kobelev · Attendorn, DE
Bernfried Hesselmann · Wenden, DE
Andreas Rinsdorf · Freudenberg, DE

Key dates

Filing date	May 14, 2004
Grant date	Feb 26, 2008
Priority date	—
Expiry date	May 14, 2024

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F1/328
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

Axial corrugated spring comprising an annular spring band 11 which describes a corrugation line oscillating about a radial reference plane around the circumference, wherein the corrugation line has maxima 12, 13, 17 of different height and minima 14, 15, 16 of different height.

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