Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Airlift bulkhead










Image Number 2 for United States Patent #4574404.

A movable, submersible, transversely extending bulkhead for use in a swimming pool. The bulkhead has an elongated hollow body with top, bottom, end and side walls and a pair of spaced air chambers positioned toward each of its ends. Positioned between and substantially equidistant from each of the air chambers is at least one core of buoyant material. The bulkhead also utilizes means for selectively controlling the quantity of air and water within the chambers for regulating the buoyancy of the bulkhead. The bulkhead may be moved along the length of a swimming pool through increasing the buoyancy of the bulkhead by displacing the water contained in the chambers, shifting the bulkhead to a new longitudinally spaced position within the pool, and decreasing the buoyancy of the bulkhead by allowing water to reenter the chambers.








 
 
  Recently Added Patents
Targeting agents for enhancing radiation therapy
Phase locking loop
Treatment devices with deliver-activated inflatable members, and associated systems and methods for treating the spinal cord and other tissues
Representations of compressed video
Method of fabricating crystal unit, crystal unit fabrication mask, and crystal unit package
Adaptive frame scanning scheme for pulsed X-ray imaging
Encoder that optically detects positional information of a moving body from different optical paths lengths
  Randomly Featured Patents
Adjustable shelving and storage system for vehicles
Pressure monitor
Memory device tester and method for testing reduced power states
Fluorocarbon polymer coating compositions containing mica particles
Control system for two hydraulic power cylinders supplied by a pressure pump via one branch connection each
Push / pull system and support structure for snubbing unit on a rig floor
Automatic vehicle load cover
Triple cylinder with auxiliary gas over oil accumulator
Guide for a medical device
Particulate adsorbent for the removal of biomacromolecules such as LDL and endotoxins from whole blood in extracorporeal circuits