Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Voltage level shift circuits and methods
Wallet
Zero-copy network and file offload for web and application servers
Monitoring of undesirable fluid ingress into subsea control modules
Real ear measurement system using thin tube
Inhibitors of human immunodeficiency virus replication
Proximity search methods using tiles to represent geographical zones
  Randomly Featured Patents
Electromagnetic reciprocating pump and motor means
Tissue box cover
Inkjet printer printhead having equalized shelf length
Air freshener device
Facsimile apparatus having a memory erase function
Blind aperture fastener
Method for filling recessed micro-structures with metallization in the production of a microelectronic device
Hydrophilic lubricity coating for medical devices comprising a hydrophobic top coat
Moldable foam insole with reversible enhanced thermal storage properties
Force distributing adhesive tape tab for disposable diapers