Window shade support roller and method of assembling

Details Window shade support roller and method of assembling Window shade support roller and method of assembling

1975-05-02

1977-03-01

Kannan, Philip C.

Flexible or portable closure, partition, or panel

Roll type

With brake or stop

160301, 160323R, 160326, E06B 9208

Patent

active

040097455

ABSTRACT:
A window shade support roller having an improved spring motor construction and method of manufacture includes a spring retaining structure which holds a driving spring and a spear structure having an integral spear. The spear structure and the spring retaining structure cooperate together, and with a ball, to form a ball clutch mechanism. The spring retaining structure has ball-receiving recesses with canting floors which simplify assembly. Assembly steps include inserting balls into the spring retaining structure, inserting the spear structure into the spring retaining structure, inserting a dowel into the spear structure, positioning a spring around the dowel, and inserting one end of such spring between portions of the spring retaining structure, which uniquely capture and retain the end without other securement, for torsional winding of the spring.

REFERENCES:
patent: 255571 (1882-03-01), Bettencurt
patent: 961680 (1910-06-01), Cole
patent: 1093930 (1914-04-01), Hartshorn
patent: 2614629 (1952-10-01), Bleibtreu
patent: 3115927 (1963-12-01), Znamirowski
patent: 3763916 (1973-10-01), Gossling

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