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
Imidazole derivatives used as TAFIa inhibitors
Method for configuring analog-to-digital converter keys and non-transitory machine readable medium storing program code executed for performing such method
Interactive program guide systems and processes
Cancer vaccines containing epitopes of oncofetal antigen
Braided pull tug pet toy
Sonic fast-sync system and method for bluetooth
SONOS stack with split nitride memory layer
  Randomly Featured Patents
Memory array bitline timing circuit
Gas-filled discharge tube
Digital electrochemical etching of compound semiconductors
Preparation of Bi-Sr-Ca-Cu-O superconductors from oxide-glass precursors
Stowable container
Multi-offset driver tool
Mobile radio antenna
Non-splicing variants of gp350/220
Personal binocular support
Apparatus and method for creating a floating cover