Coil torsion spring mounting cones with groove break and method

Details Coil torsion spring mounting cones with groove break and method Coil torsion spring mounting cones with groove break and method

1986-08-21

1989-04-04

Oberleitner, Robert J.

Spring devices

Torsion

Coil

16299, 16308, 160191, 160318, 185 45, 267179, 403229, 403296, F16F 108, F16F 112, E05F 108, F16B 702

Patent

active

048179272

ABSTRACT:
This invention relates to a novel anchor cone and winding cone apparatus and method for mounting a coil torsion spring to an overhead door. Indicia are provided on the cones to assure proper orientation of the cones to the spring and the cone/spring assembly to the overhead door. The winding cone includes arrow indicia to clearly indicate the direction of rotation for the winding cone to increase tension on the coil torsion spring. A groove break is provided in each cone to substantially reduce chafing and wear of the corresponding coil of the coil torsion spring.

REFERENCES:
patent: 3779537 (1973-12-01), Kalister
patent: 4475725 (1984-10-01), Niemann

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