Resources Contact Us Home
Floatation device

Image Number 4 for United States Patent #7841917.

A floatation device is disclosed that comprises a container 10 containing a liquefied gas, a gas chamber (60, FIG. 2) and a remotely operable device 29. The remotely operable device is switchable between a closed state in which fluid communication between the container and the gas chamber is prevented, and an open state in which fluid communication between the container and the gas chamber is enabled and vaporization of the liquefied gas charges the gas chamber with gas. The liquefied gas may be liquid nitrogen and the container may be heat insulated with an insulating vacuum cavity. A buoyancy unit (40, FIG. 2) which comprises a rigid enclosure (42, FIG. 2) defining an interior volume and a flexible diaphragm (55, FIG. 2) that partitions the interior volume into first and second chambers is also disclosed.

  Recently Added Patents
Dimmable LED light fixture having adjustable color temperature
Method and apparatus for complementing an instrument panel by utilizing augmented reality
Media used in digital high speed inkjet web press printing
System for controlled release of an active principle and method for preparation
Magnetic element with top shield coupled side shield lamination
Method of making a CIG target by spray forming
Generating and using checkpoints in a virtual computer system
  Randomly Featured Patents
Interrupted method for producing multilayered polycrystalline diamond films
Convection heat attachment and removal instrument for surface mounted assemblies
Watch with hidden compartment
Whirlpool bathtub
Oxidation of methanol and/or dimethyl ether using supported molybdenum-containing heteropolyacid catalysts
Antenna with integral alignment devices
Method of hot-forming metals prone to crack during rolling
High current pulser circuit
Nectarine tree named `Nectarexquise`
System and method for authentication in a mobile communications system