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
Integrated circuit packaging system with heat slug and method of manufacture thereof
Sterilizable film for aseptic packaging
Communication apparatus, communication method, and communication system
Method of operating an electromechanical converter, a controller and a computer program product
Methods for diagnosing irritable bowel syndrome
Power or voltage oscillation damping in a power transmission system
Vehicle tail lamp
  Randomly Featured Patents
Dining car
Photographic bleaching compositions and method of processing color reversal elements
Fluidized oligomerization
Lock and release mechanism for fifth wheel
Container and lid
Method of modifying human behavior using signal triggered post-hypnotic suggestion
Process for etching polyimide substrate in formation of unsupported electrically conductive leads
Jitter attenuator
Solid-state semiconductor light emitting device
Joint structure