Patent · US Expired

Method of making piston rod for shock absorbers

US4561164A · kind A · utility

8Cited by

17References

9Claims

0Family size

Assignee

Fichtel & Sachs · DE

Inventors

Felix Wossner
Hermann Itzinger · Dittelbrunn, DE
Leopold Schopplein · Schweinfurt, DE

Key dates

Filing date	Feb 6, 1984
Grant date	Dec 31, 1985
Priority date	—
Expiry date	Feb 6, 2004

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/2142
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A piston rod particularly for shock absorbers and spring devices has been shown in the illustrative embodiments. The piston rod comprises a tubular member which tubular member is provided with at least one extension of reduced diameter. The extension is intended for being fastened to associated structural members. In view of fluid-tightly closing the interior of the piston rods on at least one of their ends, a closure member is provided within the cavity defined by the extension of reduced diameter. The closure member is fastened to the piston rod by the reduction of the diameter of the piston rod.

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