Patent ID: 9644789
Date: 2017-05-09
CPC Classifications: B64F,F16M

Claim:
1. A spring balanced support device comprising: at least a first arm and a second arm, the first and second arm forming an arm mechanism to which a mass may be coupled directly or indirectly at a mass coupling point, the first arm being connected at a first end thereof to its surroundings via a first movable pivot point, the first movable pivot point being movable along a movement axis of the first movable pivot point, wherein the second arm is coupled at a first end thereof to the surroundings via a second movable pivot point which is movable substantially parallel to said movement axis of the first movable pivot point, the first arm further being connected at a second end thereof, opposite to the first end of the first arm, to a second end of the second arm, opposite to the first end of the second arm, at an elbow pivot point, the mass coupling point being balanced by at least one spring, one end of the spring being directly or indirectly connected to the arm mechanism at a spring connection point and, the other, opposite end of the spring being directly or indirectly connected to the surroundings at a spring base point, wherein the movement axis of the first movable pivot point extends through the first movable pivot point and substantially parallel to a direction of a force exerted on the spring balanced support device at the mass coupling point due to the force of gravity on the mass, and wherein the spring base point is located substantially on the movement axis of the first movable pivot point, or wherein the spring base point is located at a distance from said movement axis of the first movable pivot point along a line which intersects the movement axis of the first movable pivot point and which line extends substantially parallel to a pivot point axis of the first movable pivot point, and wherein the first movable pivot point is movable along the movement axis of the first movable pivot point in order to adjust the spring balanced support device.