Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Prefabricated portable tornado shelter










Image Number 3 for United States Patent #6151841.

An inexpensive, prefabricated portable tornado shelter is disclosed. The shelter is assembled from four equilateral triangular sides, a base frame, and a floor, to form a square pyramid-shaped enclosure with latched doors and PLEXIGLAS windows. The shelter allows constant air pressure equalization between its interior and exterior. The shelter is held firmly to the ground with four auger bolts.








 
 
  Recently Added Patents
Solid-state imaging apparatus and imaging system
Network attachment for IMS systems for legacy CS UE with home node B access
Memory circuit and method of forming the same using reduced mask steps
Assisted hybrid mobile browser
Method of forming wafer level mold using glass fiber and wafer structure formed by the same
Computer system and volume migration control method using the same
Inhibitors of bacterial tyrosine kinase and uses thereof
  Randomly Featured Patents
Yensen 3a
Automotive device with a lateral blinker
Shared memory based monitoring for application servers
Folding anchor
Front access DSX assembly
Web slit registry
Assembly for the stabilisation of vertebral bodies of the spine
Plasma and hemoglobin-associated acetaldehyde as a marker of alcohol use
Photoconductive member
Catalyst for producing N-substituted carbamates, and the preparation and application of the same