Resources Contact Us Home
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
Stowable pet leash and collar
Method for combining images and magnetic resonance scanner
Method, apparatus, computer program, and computer readable storage media for controlling the insertion of tab sheets into a print job
Interlock apparatus for vacuum circuit breaker
Electronic device
Alternate source programming
Ascertaining presentation format based on device primary control determination
  Randomly Featured Patents
Icon for a portion of a display screen
Generating an optimized set of relational queries fetching data in an object-relational database
Portable electric drill
Apparatus and methods for universal services interface networking
Molded elastomer
Zinc oxide films containing P-type dopant and process for preparing same
Fuel cell cathode with redox couple
Transmyocardial implant with flow reduction
Systems and methods for transaction chaining
Child safety restraining device