Pains-Wessex Limited

David Peter Plewka

James Arthur George Simpson

A device for releasing a link between a first object and a second object is disclosed. The device comprises a body having a holding means for securing the body to the link; a releasing means for releasing the link; a pyrotechnic composition for actuating the releasing means; an igniting means for igniting the pyrotechnic composition, the igniting means being activatable by an increase in ambient pressure; and a pressure-sensing means for detecting a change ambient pressure. In one embodiment, the device can include a sliding blade actuatable by a pyrotechnic composition that is ignited by an electrical stimulus activated by an increase in ambient pressure, and the link may be for example, a cable securing an emergency position indicating radio beacon to a watercraft. If the watercraft becomes submerged and the device is exposed to an increase in ambient pressure, the electrical stimulus will be activated to ignite the pyrotechnic composition which in turn, will actuate the sliding blade which then operates to cut the securing cable and release the EPIRB from the watercraft.

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Wimbourne, United Kingdom

David Peter Plewka