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 of forming solderable side-surface terminals of quad no-lead frame (QFN) integrated circuit packages
Pre and post-paid real time billing convergence system
System and method for configuring software applications in a motor vehicle
Method and apparatus for managing communication services for user endpoint devices
Method of fabricating CIGS by selenization at high temperature
Verbena plant named `Duempsopicha`
Method and system for determining a suppression factor of a suppression system and a lithographic apparatus
  Randomly Featured Patents
Self-aligning floating nut fastener
Process for preparing novel ice-controlling molecules
Electropolymerisable monomers that are soluble in aqueous solution and electroactive probes that can be obtained with such monomers
Cluster architecture for network security processing
Disposable reactor module and detection system
Strip electrode with conductive nano tube printing
Coleus plant named `Kakegawa CE11`
Acrylic emulsion coatings for rubber articles
Basting brush
Guide tube flow restrictor