Attachment for garage door spring

Details Attachment for garage door spring Attachment for garage door spring

1976-06-03

1978-02-28

Kundrat, Andrew W.

Joints and connections

Axially curved or bent portion of rod is joint component

Reversely bent portion

267 74, 85 14, 59 86, F16G 1504, F16B 4500

Patent

active

040764338

ABSTRACT:
An attachment device for the quick and easy attachment of a counterbalance coil spring to an appropriate bracket features a single section of rod bent to provide a shoulder at one end for connection to the bracket and a second shoulder at the other end for the counterbalance spring, the ends being equipped in a manner to permit application of an interlocking retention piece over end sections of the bend rod. In some forms of the invention fasteners applicable to the very endmost part of the rod are employed to lock the retention piece in place.

REFERENCES:
patent: 578211 (1897-03-01), Clark
patent: 866555 (1907-09-01), Alger
patent: 2537405 (1951-01-01), Gilbert
patent: 2620650 (1952-12-01), Cotti
patent: 2758833 (1956-08-01), Harbert
patent: 2878640 (1959-03-01), Johnson
patent: 3246464 (1966-04-01), Schommer
patent: 3272496 (1966-09-01), Halopoff et al.
patent: 3370841 (1968-02-01), Werner et al.
patent: 3621651 (1971-11-01), Gillespi
patent: 3739432 (1973-06-01), Sander et al.

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