Cutting device

Patent metadata

Field	Value
Publication number	US-2020130073-A1
Application number	US-201916725393-A
Country	US
Kind code	A1
Filing date	Dec 23, 2019
Priority date	Jun 22, 2017
Publication date	Apr 30, 2020
Grant date	—

Abstract

A cutting device having a spring that is compressed. After a firing pin retainer has travelled a predetermined path, a locking element is released. The release results in the spring being released, causing the firing pin to be accelerated and at the end to strike a percussion cap, whereby a pyrotechnic charge therein is ignited and thereby a delay element, if provided, is lit. This delay element regulates the delay time. Afterwards, an additional charge is ignited. The gas volume thus generated applies pressure to the cutting element. Above a certain pressure the shear pin shears off, causing the cutting element to be axially accelerated. The cutting element strikes the stop at high speed as a result of the acceleration, and penetrates into same. A connection to be cut, which is guided through an opening in front of the stop, is thereby severed.

First claim

What is claimed is:

1 . A cutting device comprising:
at least one firing-pin holder; at least one locking element; at least one spring; at least one firing pin; a percussion cap; a charge; a cutting element; a stop; and a shear pin, wherein the at least one locking element ensures a connection between the firing-pin holder and the firing pin.

2 . The cutting device as claimed in claim 1 , wherein a pyrotechnic delay element is arranged between the percussion cap and the propellant charge.

3 . The cutting device as claimed in claim 1 , wherein the shear pin is accommodated in a front casing.

4 . The cutting device as claimed in claim 1 , wherein the cutting element is a chisel.

5 . A munition comprising:
submunitions with a brake parachute; and a cutting device as claimed in claim 1 for severing a mechanical connection between the brake parachute and the submunition, wherein the mechanical connection is located in an opening in front of the stop.

6 . The munition as claimed in claim 5 , wherein the munition is a munition for generating a decoy target.

7 . A parachute system comprising a cutting device as claimed in claim 1 , wherein a mechanical connection which is to be severed is arranged in an opening in front of the stop.

8 . A vehicle having superstructures or subassemblies attached to a vehicle structure via mechanical connections and a cutting device as claimed in claim 1 , wherein a mechanical connection which is to be severed is located in an opening in front of the stop.

Assignees

• Rheinmetall Waffe Munition Gmbh

Inventors

• Moderegger Tobias
• Gaisbauer Rainer
• Huber Benjamin
• Leopold Thomas

Classifications

• B23D15/145 Primary

  actuated by explosion · CPC title

• F42B10/56

  of parachute {or paraglider} type · CPC title

• F42B33/06

  Dismantling fuzes, cartridges, projectiles, missiles, rockets or bombs ({F42B33/004 and} F42B33/04 take precedence; {elimination of undesirable components of explosives C06B21/0091}) · CPC title

• B23D15/04 Primary

  having only one moving blade · CPC title

• F42B3/006 Primary

  Explosive bolts; Explosive actuators (explosive valves F16K13/06; explosive cutting B23D15/145; explosive switches H01H39/00; pyrotechnical actuators F15B15/19) · CPC title