Maritime emergency cable cutter

Patent metadata

Field	Value
Publication number	US-9482500-B1
Application number	US-201414542416-A
Country	US
Kind code	B1
Filing date	Nov 14, 2014
Priority date	Nov 14, 2014
Publication date	Nov 1, 2016
Grant date	Nov 1, 2016

Abstract

A marine cable cutter is provided for wirelessly severing wire responsive to an electromagnetic command signal. The cutter includes an explosive package for wrapping around the wire, and a clamshell case for containing the package around the wire. The package includes a wireless receiver to receive the command signal, an electric pulse generator triggered by the receiver, an explosive initiated by the generator, and a platform for containing the receiver, generator and explosive. The clamshell case includes a pair of envelopes connected along mutual first edges by a hinge and mutual second edges by respective clamps. The envelopes pivot on the hinge to open and receive the package with disposal of the wire therein, and subsequently to close and secure by the clamps. The envelopes can be composed of sheet metal with the clamps being flanges with aligned holes for receiving bolt fasteners.

First claim

What is claimed is:

1. A marine cable cutter for wirelessly severing wire responsive to an electromagnetic command signal, said cutter comprising:
an explosive package for wrapping around the wire, said package including a wireless receiver to receive the command signal, an electric pulse generator triggered by said receiver, an explosive initiated by said generator, and a platform for containing said receiver, generator and explosive; and
a clamshell case for containing said package, said case including a pair of envelopes connected along mutual first edges by a hinge and mutual second edges by respective clamps, wherein said envelopes pivot on said hinge to open and receive said package with disposal of the wire therein, and subsequently to close and secure by said clamps.

2. The cutter according to claim 1 , wherein said explosive is a shaped charge.

3. The cutter according to claim 1 , wherein said platform is a foam rubber block within which to embed said receiver, said generator and said explosive.

4. The cutter according to claim 1 , wherein said package further includes a blasting cap to receive said pulse from said generator and an initiator to channel a blast from said cap to said explosive for initiation to sever the wire.

5. The cutter according to claim 1 , wherein said generator includes a battery for electrical source.

6. The cutter according to claim 1 , wherein said case comprises sheet metal portions to cut, fold and bend, wherein said metal portions provide a longitudinal and radial chamber portions for containing said package and end plates.

7. The cutter according to claim 6 , wherein said clamps include flanges with aligned holes on said portions and bolt fasteners for insertion into said holes.

8. The cutter according to claim 1 , wherein said explosive includes a pair of shaped charge explosive charges.

Assignees

• Anderson Steven E
• Us Navy

Inventors

• Anderson Steven E

Classifications

• B23D15/145 Primary

  actuated by explosion · CPC title

• F42B3/00 Primary

  Blasting cartridges, i.e. case and explosive (fuse cords, e.g. detonating fuse cords C06C5/00; chemical aspects of detonators, blasting caps or primers C06C7/00) · CPC title

• F42D3/00 Primary

  Particular applications of blasting techniques {(explosive welding B23K20/08; explosive bolts or actuators F42B3/006; explosive valves F16K13/06; cutting devices actuated by explosion B23D15/145; pyrotechnical actuators F15B15/19; switching devices actuated by explosion H01H39/00)} · CPC title

• F42B3/08

  with cavities in the charge, e.g. hollow-charge blasting cartridges · CPC title

• F42C11/001

  Electric circuits for fuzes characterised by the ammunition class or type (F42C11/02 - F42C11/06 take precedence; mechanical fuzes having electric igniters for hand grenades or marine warheads F42C14/025, F42C14/045) · CPC title