Patent · US Expired

Spring guide rail with several centering fingers

US4474045A · kind A · utility

1Cited by

2References

32Claims

0Family size

Assignee

ITT Industries · US

Inventors

Lothar Kunze · Hofheim, DE
Harald Vogt · Karlsruhe, DE
Bruen Stadler · Frankfurt am Main, DE
Anton Herr · Kelkheim, DE

Key dates

Filing date	May 16, 1983
Grant date	Oct 2, 1984
Priority date	—
Expiry date	May 16, 2003

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF01C21/0809
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The spring guide rail has several centering fingers and a bottom rail and is made out of a one-piece sheet metal strip into which substantially rectangular recesses are punched so that a ladder-type structure is formed with a pair of longitudinal bars being interconnected by cross bars. By repeated bending operations around given longitudinal axes the two parts of the bottom rail are formed by the longitudinal bars and the centering fingers are formed by the cross bars. Between the sections of the cross bars folded to face each other there is a space and in the bottom rail area projections are arranged which ensure the spacing between the opposite parts of the bottom rail. Thus, a simple and stable spring guide rail with a safe guidance is provided for the vane lifting springs.

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