Ceiling hook

Details Ceiling hook Ceiling hook

1976-09-07

1978-06-27

Foss, J. Franklin

Supports

Suspended supports

Hook type

242305AD, B42F 1300

Patent

active

040970159

ABSTRACT:
A rotatable ceiling hook for plants and the like. The hook is shaped in the form of a helix which is secured to a support at a point midway between its ends by a suitable means such as a screw to provide a strong and balanced ceiling hook. Interposed between the screw and the helix is a base and a washer separated by a rigid cylindrical spacer. The helix rotates around the spacer, thus providing easy rotation even when the screw is firmly attached to a support and the hook is heavily loaded.

REFERENCES:
patent: 427642 (1890-05-01), Wack
patent: 645057 (1900-03-01), Ayers et al.
patent: 812691 (1906-02-01), Smith
patent: 815019 (1906-03-01), Kampfe
patent: 850623 (1907-04-01), Clark
patent: 860762 (1907-07-01), McGrady
patent: 1247500 (1917-11-01), Bulmer
patent: 3055625 (1962-09-01), Kopf et al.
patent: 3297293 (1967-01-01), Andrews et al.
patent: 3977643 (1976-08-01), Staley
patent: 3995822 (1976-12-01), Einhorn

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