Dynamic column support for feeder pan

Details Dynamic column support for feeder pan Dynamic column support for feeder pan

1976-11-16

1978-01-24

Parsons, Jr., Marion

Supports

Armrest or headrest

Armrest for writer

248388, 248160, B43L 1500

Patent

active

040699951

ABSTRACT:
Apparatus is disclosed for supporting an individual's arm in a feeder pan or tray to enable the user to perform manipulative acts with his hands and fingers without relying upon arm or shoulder muscles. The tray easily moves in any horizontal direction to a desired position within the limits of the apparatus without tipping or tilting. The underlying dynamic suspension which permits this movement includes three or more longitudinally incompressible but laterally deflectable columns positioned at the vertexes of a regular polygon and extending upwardly from a fixed base to a movable table upon which the tray is mounted. Each column is a wire cable having a core element with wire plies counterwrapped thereon in spiral layers.

REFERENCES:
patent: 75306 (1868-03-01), Smith
patent: 438279 (1890-10-01), Rowlett
patent: 607675 (1898-07-01), Barr
patent: 659089 (1900-10-01), McKinney
patent: 1599066 (1926-09-01), Rushmore
patent: 2976000 (1961-03-01), Gunderson
patent: 3465997 (1969-09-01), Piske
patent: 3646696 (1972-03-01), Sarkisian

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