Document Type and Number:
Japanese Patent JPS578998
Kind Code:
B2
Abstract:
A panhead for mounting, panning and tilting instruments such as cameras having a smooth, uniform drag mechanism, requiring virtually no initial extra breakaway force, in which drag resistance is provided between a shaft and a relatively rotatable housing by the interaction between a plurality of disks fixed perpendicularly on the shaft and a stack of drag plates mounted to slide into interleaved relationship with the disks. The disks and plates are surrounded by a viscous fluid and are closely spaced, on the order of 0.001 of an inch, but not in contact. A worm drive for positioning the plates holes them in adjusted position.
Application Number:
JP10227673A
Publication Date:
February 19, 1982
Filing Date:
September 12, 1973
Export Citation:
International Classes:
G03B17/56; F16D33/00; F16D63/00; F16M11/06; F16M11/12
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