Resources Contact Us Home
Portable acoustic shell

Image Number 3 for United States Patent #5651405.

An improved collapsible stage panel assembly having a base, a vertical panel rigidly attached to the base, an intermediate panel pivotally connected to the top of the rigid vertical panel, a canopy panel pivotally connected to the intermediate panel and a kicker panel pivotally connected to the bottom of the rigid vertical panel. The stage panel assembly has a mechanical assisting device between the rigid vertical panel and the intermediate panel to provide a counter balancing force against the combined weights of the intermediate and canopy panels. A second mechanical assisting device extends between the intermediate panel and the canopy panel to provide a counter balancing force against the weight of the canopy panel. An automatic locking device provides for the locking of the intermediate panel in its extended position relative to the rigid vertical panel when the intermediate panel is placed in its extended position. The improved panel assembly allows for easier conversion between the extended configuration of the panel assembly suitable for combination with other such assemblies to form an acoustic reflecting shell and the folded storage configuration where the panels can be nested together for storage in a minimum of space.

  Recently Added Patents
Biometric data display system and method
Method and system to generate finite state grammars using sample phrases
Mobile communication device and method for providing positioning information
Visual model importation
Input device with photodetector pairs
Data paths using a first signal to capture data and a second signal to output data and methods for providing data
Drug comprising as the active ingredient proliferative vector containing survivin promoter
  Randomly Featured Patents
Body-building machine
Producing an elasticized garment utilizing an articulated conveyor
Wave power components
Combined wading staff and telescopic fishing net handle with ball in retention clip assembly
Image for a portion of a display screen
Sandwich bun mold
Panax notoginsenoside composition
Process for the oxygen delignification of pulp in two stages with higher pressure in the second stage
Method and leadframe for packaging integrated circuits
Thiazolineazetidinone derivatives