Arthur J Hopkins

US Patent:

42478855, Jan 27, 1981

Filed:

Mar 23, 1978

Appl. No.:

5/889386

Inventors:

Arthur W. Hopkins - Cornwall NY

International Classification:

F21V 2120

US Classification:

362401

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.