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
Soliciting first party in communication session to maintain call when degradation of connection to second party is anticipated
Polyolefin and composition for pipe systems and sheets
Tread portion of an automobile tire
Method for switching channels in a wireless communication network
Coffee cup stationery tab
(4950
Assisted hybrid mobile browser
  Randomly Featured Patents
Technique for reducing acoustic radiation in turbomachinery
Apparatus for thermal tempering sheets of glass
Magnetic bubble memory with detector
Water recirculation system for power plant backend gas temperature control
Nail clipper accessory
Method and apparatus to locate a device in a dwelling or other enclosed space
Pyrimido(4,3-b)(1,3)thiazin-6-ones
Adjustable telescopic apparatus
Method and apparatus for assessing the installation of a component in a packet-switched network
Position indicating apparatus