Supports – Brackets – Adjustable
Patent
1981-04-13
1984-05-08
Foss, J. Franklin
Supports
Brackets
Adjustable
2482811, E04G 300
Patent
active
044470312
ABSTRACT:
A support arm system for selectively positioning relatively heavy objects such as television sets consisting of articulated forward and rear arms each comprised of parallelogram linkages which are each sprung to counterbalance the load weight. A special mounting of the forward arm springs enables a compact configuration, but which introduces slight unbalance conditions in some arm positions. An adjustable friction brake arrangement is incorporated in a pivot point of each linkage which applies a braking force to insure stable positioning of each of the arms in any position throughout the motion of the arm system notwithstanding unbalanced conditions. Also disclosed is a quick connect feature for mounting the supported load to the forward arm, which is combined with a parking lock securing the forward arm in a folded position, which parking lock is released during the connecting feature. An access opening enables convenient adjustment of the forward arm spring force to precisely balance a given supported load weight.
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Fox Merlin D.
Mason Robert L.
Rettich Donald R.
Scarborough, Jr. Edward D.
Souder, Jr. James J.
Foss J. Franklin
Positioning Devices, Inc.
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