Land vehicles – Wheeled – Wheel steering by attendant
Patent
1991-09-16
1994-06-07
Culbreth, Eric
Land vehicles
Wheeled
Wheel steering by attendant
248129, 254423, 280 91, 280 99, B62B 302
Patent
active
053183134
ABSTRACT:
A camera pedestal has a cylinder with a tapering cross-section for providing a uniform counterbalancing force using a compressed gas. Telescoping column sections which make up a column assembly have inner relief channels and outer slots for hardened roller strips. A column drive system has a motor driving a gear engaged to a rack on the column, to automatically or remotely raise or lower the column. A column braking system locks the column assembly into any selected position and prevents extension or retraction of the column assembly if the load on the column is not counterbalanced by the compressed gas. The column assembly is eccentrically positioned on its base tank. The pedestal is engageable to a receptacle on a camera dolly with a telescoping steering drive tube interconnecting a steering assembly on the pedestal with a steering system in the dolly.
REFERENCES:
patent: 4003584 (1977-01-01), Zelli
patent: 4111389 (1978-09-01), Gundlach et al.
patent: 4300782 (1987-11-01), Pioth
patent: 4337845 (1982-07-01), Zelli et al.
patent: 4577827 (1986-03-01), Eliscu
patent: 4657267 (1987-04-01), Jaumann et al.
patent: 4697773 (1987-10-01), Jaumann et al.
patent: 4950126 (1990-08-01), Fabiano et al.
patent: 5028037 (1991-07-01), Wang
Ladybird Elemack Brochure.
Vinten Complete Range Catalogue 1989/1990.
Cricket Camera Dolly Brochure.
FGV Panther Brochure.
Vinten Tri-Track photographs.
Photographs: Vinten Tri-Track Pedestal.
Culbreth Eric
Leonard Studio Equipment, Inc.
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