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
Method for execution upon processing of at least one histological sample
Methods of prognosing a rheumatoid arthritis remission phenotype
Communication device and two-dimensional communication system using the same
User interface for integrating applications on a mobile communication device
Motorized home appliance door
Fluorescent molecule and method for detecting target nucleic acid
Techniques for generating and displaying a visual flow of user content through a social network
  Randomly Featured Patents
Method and apparatus for monitoring the quality of lubricant
Passive display device having movable electrodes and method of manufacturing
Sealing and venting system for oxidative disinfection of contact lenses
Clip for a writing instrument
Opaque polymeric films and processes for making same
Process of fabricating a precision microcontact printing stamp
System and method for connecting a call
Installation drill
Morpholinocarbonyl alkyl N-benzylpiperazines