Resources Contact Us Home
Floatation device

Image Number 10 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
Vector smoothing of complex-valued cross spectra to estimate power spectral density of a noise signal
Corporate infrastructure management system
System and method for moving an object
Method and apparatus for controlling a warming therapy device
Reducing head and tail duplication in stored data
System and method for mapping and displaying audio source locations
Partitioning system including a generic partitioning manager for partitioning resources
  Randomly Featured Patents
Tire tread
Rotational wellbore test valve
Integration of result data from first program operations on dynamic source data into data of a second program
Spacers for vertically moored platform riser bundles
Convertible handset device for telephone sets
Nitrogenous polymer composition emitting reduced amounts of hydrogen cyanide on combustion
Expansion process for the production of instant grits
Method for reducing branch target storage by calculating direct branch targets on the fly
High lamination speed automatic laminator