Mechanical arm with spring counterbalance

Details Mechanical arm with spring counterbalance Mechanical arm with spring counterbalance

E - Fixed Constructions

04

G

E04G 3/00 (2006.01) F16M 11/04 (2006.01) F21V 21/26 (2006.01)

Patent

CA 2516593

A mechanical support arm for holding lamps, flat screen monitors or other equipment which comprises a base member and two links joined by pivoting joints and held in position by friction in the joints. The amount of friction required to hold the equipment in position is reduced by the use of spring- assisted counterbalances that compensate for the majority of the weight. The novel aspects of the invention include the design of the pivots, which are linked rings able to rotate about axles disposed at the pivot points, and the manner in which the springs are attached to the pivot points to reduce the amount of force that need be exerted on the arm to place the object being supported in the desired position.

Bras mécanique de maintien destiné à porter des lampes, des écrans plats ou d'autres appareils, comportant un élément de base et deux segments de liaison reliés par des articulations à pivotement et maintenus en place par frottement dans les articulations. L'intensité du frottement nécessaire au maintien en place de l'appareil est réduit grâce à l'emploi de contre-poids assistés par ressort qui compensent la plus grande partie du poids. Les aspects nouveaux de l'invention sont, entre autres, la conception des pivots, qui sont des anneaux reliés entre eux et aptes à tourner autour d'axes prévus au niveau des pivots, et le mode de fixation des ressorts aux points de pivotements, mode par lequel l'effort auquel l'on doit soumettre le bras afin de placer l'objet porté dans la position voulue est réduit.

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