Wheel suspension for a camera dolly

Details Wheel suspension for a camera dolly Wheel suspension for a camera dolly

1993-07-23

1996-02-20

Culbreth, Eric D.

Land vehicles

Wheeled

Attachment

280 4711, 301 362, 301127, B60P 300

Patent

active

054923530

ABSTRACT:
A camera dolly has a steering compensator including offset shaft sections and drive members rotationally displaceable from each other. The steering compensator provides steering angle correction in conventional steering wherein the front wheels of the dolly remain fixed straight ahead and the rear wheels steer. A crab-conventional camera dolly steering shift mechanism uses shift plates and sprockets on a vertical axle to shift between crab and conventional steering modes. An electronic shifter, provided as an accessory, automatically shifts between crab and conventional steering modes. A rocker suspension for the wheels of the camera dolly reduces undesired movement of the dolly, and of a camera mounted on the dolly, when the dolly wheels encounter a bump or obstruction. A bogey wheel system improves the performance of the rocker suspension by offsetting the wheels of the dolly dual wheel sets.

REFERENCES:
patent: 1149153 (1915-08-01), Schleicher
patent: 2933327 (1960-04-01), Benson et al.
patent: 3342507 (1967-09-01), Koch et al.
patent: 4003584 (1977-01-01), Zelli
patent: 4603868 (1986-08-01), Schutz
patent: 4943101 (1990-07-01), Chapman
patent: 4950126 (1990-08-01), Fabiano et al.
patent: 5088662 (1992-02-01), Appleberry
LSE Crab Crane Rocker Design illustration.
Vinten Fulmar Pedestal Rocker Design illustration.
J. L. Fisher Inc. Model 9 Camera Dolly Optional Accessories brochure.

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