Devices for easily detaching underwater instruments and other equipment from the weights and levitating them

Keyword
Separation device, anchor, ocean-bottom seismometer, underwater observation device
Information no
0397
Appeal point
The buoyant body (underwater observation device, etc.) is separated from the fixing device (anchor, weight) and floated and recoverd.
It enables easy recovery of ocean-bottom seismometer.
Summary
A buoyant body (for example, an ocean-bottom seismometer) attached below to a weight with a detachable connecting device. When the connecting device is activated by a trigger signal, a trigger mechanism works for releasing the connection. The device configuration is composed of a closed loop member formed of a thermoplastic material and a connecting part between the closed loop member and a weight. When the closed loop member is in the closed state, the buoyant body is restrained. When the closed loop member is melted and opened, the restraint of the buoyant body is released.
Schematic image
Application
Ocean-bottom seismometer separating trigger
Trigger for separating various undersea devices and underwater devices
Relational patent
Item name
:
Separation device
Filing date
:
2011-10-06
Inventor(s)
Kiyoshi Hatakeyama