Patent · US Active

Spring and system

US9371877B2 · kind B2 · utility

1Cited by

1References

5Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Stojan Cegar · Waigolshausen, DE
Erwin Wack · Niederwerrn, DE

Key dates

Filing date	May 1, 2014
Grant date	Jun 21, 2016
Priority date	—
Expiry date	May 22, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F15/123
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A spring includes at least one spring portion that extends over an arc of at least 90° when projected onto a cross-sectional area perpendicular to a force direction of the spring in an unloaded condition thereof. The spring portion has an elliptical shape in the projection. A system including one or more springs is also described.

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