Counter-balancing mechanism for camera universal head

Details Counter-balancing mechanism for camera universal head Counter-balancing mechanism for camera universal head

1990-05-21

1991-02-05

Ramirez, Ramon O.

Supports

Stand

To hold a particular article

2482921, 248596, F16M 1110

Patent

active

049898140

ABSTRACT:
This invention relates to a universal head to vertically swing a camera, and, in particular, to a counter-balancing mechanism for counter-balancing the rotative moment arising from the displacement of the bravity center of the camera. The mechanism comprises a cam surface and a roller in a suppressing contact with each other; and said cam surface is formed on one side of the camera mounting table and, rapid free rotation of the camera mounting table is prevented by suppressing the roller contacting with cam surface upon that cam surface; the cam changes the place of contact between the cam and roller in cooperation with the roller as the camera mounting table rotates in order to enhance forces for preventing the rotation of that table.

REFERENCES:
patent: 2998953 (1961-09-01), O'Connor
patent: 4083524 (1978-04-01), O'Connor
patent: 4533103 (1985-08-01), Ina
patent: 4653709 (1987-03-01), Paldino
patent: 4726253 (1988-02-01), Russell
patent: 4732357 (1988-03-01), Lindsay
patent: 4771979 (1988-09-01), Nakazawa et al.
patent: 4919376 (1990-04-01), Uehara et al.

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