MOTION CONTROL BOOM CINEMATOGRAPHY

Brand Owner Address Description
GRAPHLITE APOGEE PRODUCTIONS, INC. 6842 Valjean Avenue Van Nuys CA 91406 motion control boom for cinematography and videography applications;graph light;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A boom-holding control device brings an excavator boom into a holding condition or a release condition. The device includes a boom-holding valve provided on a fluid pressure line for preventing boom deadweight-caused drainage of a hydraulic flow from a boom cylinder to thereby keep a boom in a holding condition, a boom release valve for releasing the boom from the holding condition in response to at least one of a boom-down pilot signal pressure supplied from a boom cylinder remote control valve and a travel signal pressure fed from a travel control operator-interface device and a solenoid-actuated changeover valve provided on a travel signal line for selectively opening and blocking off the travel signal line. The changeover valve is normally kept in a closing position and will be shifted to an opening position at the time of simultaneous activation of a travel selection switch and a boom release switch.