Orientable mounting for optical and/or photo-cinematographic equipment
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United States of America Patent
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Dec 16, 2008
Grant Date -
Nov 22, 2007
app pub date -
Aug 8, 2005
filing date -
Sep 10, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
An orientatable mounting for optical and/or photo-cinematographic equipment including at least one universal joint having a first and a second joint component which are movably coupled together, a member applying an immobilizing friction load between the joint components including a hydrostatic pressure source and actuator for operative control of the pressure member, and the hydrostatic pressure source including a first and a second piston member. The first piston member acting on one of the joint components and the second piston member capable of being displaced through a selectively controllable actuator to induce a hydrostatic pressure in a fluid source which is to be transferred to the first piston member consequently exerting an immobilizing friction force between the joint components, and the actuator includes a first actuator member for operative control of the second piston member in order to generate the preselected immobilizing load between the joint components and a second separate actuator member to selectively control the second piston member in generating a relative friction load between the joint components independently of the immobilizing load obtained through control of the first actuator member.
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