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
Group greeting card
Method for playing digital media files with a digital media player using a plurality of playlists
Detecting the type of NAT firewall using messages
Porous polymeric resins
Supplier capability methods, systems, and apparatuses for extended commerce
Produce container and lid assembly
System for the secure management of digitally controlled locks, operating by means of crypto acoustic credentials
  Randomly Featured Patents
Corona discharge treatment roller and surface finishing process
Cleaning article comprising melamine foam sponge
Monitor for controlling the flow of gases for breathing during inhalation
Homocysteine assay
Miniature rose plant named `POULra015`
Inflatable towable vehicle
Snack food
Polyurethane adhesive for a surface treatment-free fiber reinforced plastic
Probe positioning and bonding device and probe bonding method
Method for conducting three-dimensional subsurface seismic surveys