Limited motion rotation joint

Details Limited motion rotation joint Limited motion rotation joint

1978-03-23

1981-01-27

Nelson, Peter A.

Illumination

Supports

Counterbalanced support

362413, 362421, 362432, 403 46, F21V 2120

Patent

active

042478855

ABSTRACT:
The limited motion rotational joint employs two rotational members positioned as to be in frictional and rotatable engagement with each other around a common axis and in parallel spaced planes. The outer sections of the members are spaced apart, by the use of spacers, and a frictional foam is wrapped around the spacers while fitting between the outer sections. A compression unit is then used for circumferential application around the frictional foam to provide regulation of the frictional force applied to the rotational members.

REFERENCES:
patent: 2388474 (1945-11-01), Ellis
patent: 2449250 (1948-09-01), Richter
patent: 2656454 (1953-10-01), Yacyshyn
patent: 2747283 (1956-05-01), Sanders
patent: 3278203 (1966-10-01), Snyder
patent: 3286545 (1966-11-01), Malachowski
patent: 4092528 (1978-05-01), Puyplat
patent: 4135834 (1979-01-01), Bartman
patent: 4160285 (1979-07-01), Shibla

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