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
Image stabilization
Compact multi-functional scanning apparatus with retractable flatbed scanner
Semiconductor device
Program recording medium, image processing apparatus, imaging apparatus, and image processing method
Snapshots in de-duplication
Representing polarized light in computer models
Management of computer-file sharing between at least two devices
  Randomly Featured Patents
Automatic frequency control system for single sideband signal receiver
Memory component with memory cells having changeable resistance and fabrication method therefor
Convertible cleaning kit
Tension control assembly for flexible tonneau cover system of pick-up truck
Biasing technique for a high density SRAM
Cantilevered, adjustable, portable computer desk
Retractable mosquito net
Haloalkoxylated polybutadiene polymer and roofing membrane formed therefrom
Ultrahigh frequency mobile antenna system using dielectric resonators for coupling RF signals from feed line to antenna
Cleaning device, charging device, and image forming apparatus