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US 2022/0144394 A1Published application
Emergency flotation device using compressed gas
AssigneeSea-Ark Technologies Ltd.
InventorsOriya SHOHAM, Moshe SHOHAM, Matityahu AZRIEL
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AssigneeSea-Ark Technologies Ltd.
InventorsOriya SHOHAM, Moshe SHOHAM, Matityahu AZRIEL
Estimating the term…
A flotation device for providing emergency flotation for a person swimming or passing through a body of water, comprising a container filled with a charge of a gaseous material under a pressure such that it is in its liquid phase at normal environmental temperatures. The container is connected to a flexible flotation chamber through a passage which remains normally closed until actuated by the user. When the device is actuated by opening the passage, the charge expands into the flotation chamber, thereby inflating it, and providing support to the user in the water. The gaseous material has thermodynamic properties such that it remains in its liquid phase right up to the maximum temperatures to which the device is expected to be exposed to. Consequently, its volume, and hence the internal pressure within the gas container, does not increase significantly, thereby enabling the container to be of lightweight construction.
A flotation device comprising:
A flotation device according to any of the previous claims, wherein the mechanism is adapted to be manually operated by a user.
A flotation device according to any of the previous claims, wherein the mechanism is adapted to be operated automatically, independently of the user.
A flotation device according to any of the previous claims, wherein the passageway is a valve.
A flotation device according to any of the previous claims, wherein the container occupies a volume of less than 80 milliliters and the charge of gaseous material expands to at least 5 liters when released into the flexible flotation chamber.
A flotation device according to any of the previous claims, wherein the pressurized charge of gaseous material in its liquid phase expands by less than 12% over a range of temperatures of from 15° C. to 50° C.
A flotation device according to any of the previous claims, further comprising a sensor indicative of immersion in water for more than a predetermined time, and providing a signal to activate the inflation device.
A flotation device according to any of the previous claims, further comprising a sensor adapted to detect any one of vibration, depth, pressure or light.
A flotation device according to any of the previous claims, wherein the gaseous material comprises a Tetrafluoropropene-based hydrofluoroolefin.
A flotation device according to any of the previous claims, wherein the gaseous material comprises R1234ze(E) or R1234yf.
A flotation device according to any of the previous claims, wherein the device has a strap configured to enable the device to be worn on any of the wrist, arm, waist, chest or neck of a user.
A flotation device comprising:
A flotation device comprising:
Dependencies are inferred from the claim text.