Camera dolly arm

F - Mech Eng,Light,Heat,Weapons – 16 – M

Patent

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Details

F16M 11/40 (2006.01) H04N 5/222 (2006.01) B62B 3/02 (2006.01)

Patent

CA 2326727

A camera dolly (20) has an upper arm (22) pivotable on a lower arm (32). Chains (52) and sprockets (58, 62) within the lower arm (32) raise the upper arm (22) when the lower arm is raised by a hydraulic actuator (70). Leveling rods (54) maintain a camera platform (26) in a level position as the arm is raised and lowered. A center plate (86) in the lower arm and a brace plate (104) in the upper arm increase the strength and stiffness of the arm. The ratio between the lower sprocket and upper sprocket within the lower arm is greater than 2:1, providing additional arm travel. A structural tube (100) in the upper arm section provides a secure attachment point for a leveling head.

Selon cette invention, un chariot (20) de caméra possède un bras (22) supérieur pivotant sur un bras (32) inférieur. Les chaînes (52) et les pignons (58, 62) du bras (32) inférieur soulèvent le bras (22) supérieur lorsque le bras (32) inférieur est lui-même soulevé par un actionneur (70) hydraulique. Des barres (54) de nivellement maintiennent une plate-forme (26) de la caméra à un même niveau au moment où le bras monte et s'abaisse. Une plaque (86) centrale du bras inférieur et une plaque (104) de liaison du bras supérieur augmentent la résistance et la rigidité du bras. Le rapport entre le pignon inférieur et le pignon supérieur du bras inférieur est supérieur à 2:1, et génère le déplacement du bras additionnel. Un tube (100) structural de la section du bras supérieur fournit à la tête de nivellement un point d'assujettissement fixe.

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