Movable supporting arm

Supports – Brackets – Adjustable

Patent

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Details

2481231, E04G 300

Patent

active

053482603

ABSTRACT:
The movable supporting arm is mounted on a pivot pin at its inner end on a wall or base. The outer end is spring counter-balanced by an adjustable spring and there is a friction brake which controls movement and locks the arm in position. The friction brake and arm can both be mounted with the same hand so that the supporting arm can be moved into position and locked in position.

REFERENCES:
patent: 2572231 (1951-10-01), Woodward
patent: 5037053 (1991-08-01), Fox et al.
Marus Dental Products (1979).

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