Pan unit

Details Pan unit Pan unit

1986-08-19

1988-04-12

Foss, J. Franklin

Supports

Stand

To hold a particular article

188290, 2482891, F16M 1112

Patent

active

047369167

ABSTRACT:
In a pan unit for a fluid tripod head, the pan unit includes a cylinder upon which a camera or other piece of equipment is to be mounted, and a piston slidably received within said cylinder. The piston is to be mounted on said tripod head, said piston and cylinder co-operating to provide a first working space within which a viscous liquid is to be located to damp relative movement between said piston and cylinder about the longitudinal axis thereof, the volume of said first working space being variable in order to adjust the viscous drag between said piston and cylinder.

REFERENCES:
patent: 3123330 (1964-03-01), Forbes-Robinson
patent: 3877552 (1975-04-01), Higginson et al.
patent: 3958787 (1976-05-01), Miller et al.
patent: 4010923 (1977-03-01), Miller et al.
patent: 4044982 (1977-08-01), Miller et al.
patent: 4083524 (1978-04-01), O'Connor
patent: 4177884 (1979-12-01), Vinten

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