Support wheel for a camera dolly

Details Support wheel for a camera dolly Support wheel for a camera dolly

1984-02-03

1986-01-28

Tanner, Harry B.

Railway rolling stock

Trucks

Supplemental wheel

104 1A, 280 91, B61F 100

Patent

active

045663912

ABSTRACT:
A support wheel device for a camera dolly, comprising four wheel suspension supports (1) each of which is disposed on the frame of the dolly at respective corners of a rectangle and on each of which at least one ground wheel (4) and at least one rail wheel (7) are rotatably mounted and each support is releasably rigidly connectable to a corresponding steering shaft (11) extending perpendicularly to the plane of the rectangle, and the shafts are also connected to a steering mechanism which serves to rotate the four steering shafts (11) in a rotationally synchronous and uniform manner. In order to enable the camera dolly to be run along arbitrarily curved rail paths, as well as on the ground wheels, the invention provides that the wheel suspension support (1) may be coupled to its steering shaft by a disengageable coupling (15, 16), whereby in the disengaged position the rigid connection between the wheel suspension support and the steering shaft is released.

REFERENCES:
patent: 2544924 (1951-03-01), Herold
patent: 3018116 (1962-01-01), Summers et al.
patent: 3120821 (1964-02-01), Bingham
patent: 3297337 (1967-01-01), Sargent
patent: 4257619 (1981-03-01), Fisher

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