Land vehicles – Wheeled – Running gear
Patent
1978-09-26
1981-03-24
Love, John J.
Land vehicles
Wheeled
Running gear
74497, 280 99, B62D 706
Patent
active
042576199
ABSTRACT:
An adjustable turning ratio ratary positioning mechanism has rotary drive and driven members coupled by a flexible drive band, such as a sprocket chain, with oppositely movable runs between the members which are laterally displaceable during rotation of the drive member in such a way as to selectively provide the positioning mechanisms with different predetermined turning ratios, i.e., the turning angle(s) of the driven member(s) per unit turning angle of the drive member. A camera dolly steering mechanism embodying a rotary positioning mechanism according to the invention actuated by a single cam on the dolly steering shaft for selectively steering the dolly in round, crab, and conventional steering modes.
REFERENCES:
patent: 2715534 (1955-08-01), Hoge et al.
patent: 2901265 (1959-08-01), Knight et al.
patent: 3031024 (1962-04-01), Ulinski
patent: 3077354 (1963-02-01), Rateau
patent: 3189366 (1965-06-01), Ulinski
patent: 3463506 (1969-08-01), Drake
patent: 3546957 (1970-12-01), Adams
patent: 4003584 (1977-01-01), Zelli
Love John J.
Nyhagen Donald R.
Stack Norman L.
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