Supports for cameras
AssigneesVictoria Alice Miller, Timothy Robert Miller
InventorsJeanette Mary Miller, Robert Eric Miller
Life of this patent
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Abstract
This invention relates to supports for cameras and the like on tripods. Such supports normally provide for tilting and panning of the camera. The invention is concerned with the smooth operation of the support bearings and includes means for maintaining between two relatively rotating surfaces a thin film of a suitable liquid. Further, the support bearings include a hydrostatic control means which allows for adjustment of the bearing friction drag.
Claims13
A fluid head support for rotating an apparatus supported thereon, said support comprising a casing having a substantially cylindrical bore therein, a cylindrical block, which is rotatable within said cylindrical bore, means permitting attachment of said apparatus to said fluid head support, sealing means to maintain a hydraulic fluid between the cylindrical surfaces of the casing bore and the block, said block being provided with a plurality of radial passages, an open end of each of said passages being located adjacent the cylindrical surface of the casing bore, each passage having a brake piston in sliding engagement therein, each said piston being located adjacent said open end of its respective passage, a control piston cylinder combination, means permitting fluid communication between the control piston-cylinder combination and the radial passages, means permitting displacemebt of the control piston and thereby causing radial displacement of the brake pistons relative to the cylindrical surface of the casing bore.
Dependencies are inferred from the claim text.