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
Image processing apparatus, image display apparatus, and image processing method
Radio communication device and sequence length adjusting method
Maize variety hybrid X03A157
Level shifter and method of using the same
Agent for expelling parasites in humans, animals or birds
All-in-one information handling system
Nestable shallow container
  Randomly Featured Patents
Thermally stable diamond bonded materials and compacts
Mounting assembly for a weapon accessory
Cyclone separator with central built-in element
Pharmaceutical compositions containing a 1-phenoxy-2-hydroxy-3-alkynylamino-propane and their use as adrenolytics and hypotensives
Timeline for presenting information
Mechanical fastening systems with disposal means for disposable absorbent articles
Fast search method for vector quantizer communication and pattern recognition systems
Apparatus for deterioration diagnosis of an exhaust purifying catalyst
Infrastructure for supporting file replications
Motor engine family