# US 8,783,183 B2 · Active body

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- Number: US 8,783,183 B2
- Document ID: US8783183B2
- Status: Granted
- Kind: B2
- Application number: 11/727,869
- Filed: 2007-03-28
- Published: 2007-11-22
- Granted: 2014-07-22
- Earliest claimed: 2004-09-28
- Assignees: Rheinmetall Waffe Munition GmbH
- Applicants: Rainer Gaisbauer; Heinz Bannach; Vikron Kadavanich; Martin Fegg; Christian Wagner
- Inventors: Rainer Gaisbauer; Heinz Bannach; Vikron Kadavanich; Martin Fegg; Christian Wagner
- Web page: https://patentgrep.com/patent/US8783183B2

## CPC

- F42B 5/16: characterised by composition or physical dimensions or form of propellant charge, {with or without projectile,} or powder (chemical composition C06B; {F42B5/24 takes precedence})
- C06B 45/00: Compositions or products which are defined by structure or arrangement of component of product (explosive charges of particular form or shape F42B1/00, F42B3/00)
- C06C 15/00: Pyrophoric compositions; Flints (chemical lighters C06C9/00)
- F42B 4/26: Flares; Torches {(mines for practice or training containing flares or illuminating charges F42B8/28; projectiles of illuminating type F42B12/42)}
- F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D)
- C06B: EXPLOSIVES OR THERMIC COMPOSITIONS (blasting F42D); MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES (compounds in general C01, C07 or C08; {demolition agents based on cementitious or like materials C04B41/0009})
- C06C: DETONATING OR PRIMING DEVICES; FUSES (ammunition fuzes F42C); CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS

## Abstract

An active body is provided that includes at least one active mass block made of monobasic or polybasic high-energy materials such as a nitrocellulose mixture, for example, comprising approximately 60 percent nitroglycerin and 40 percent diethylene glycol dinitrate, which is provided with structures both on a surface and on an interior. In addition, the inner structures can be filled with an active mass substance. The ignition is triggered by a pyrotechnical primer composition, which initiates the active body, preferably from the inside.

## Claims

### Claim 1

An active body comprising:
at least one pyrotechnic active mass block having specific structures at or on a surface of the active body and in an interior of the active body, wherein said structures in said interior being formed of channels and/or cavities;
said channels and/or cavities being filled with fine structured materials formed of active mass substances which are initiated by primer compositions,
wherein the structures on the surface, which are formed as grooves and/or roughened texture, enlarge the surface depending on a pattern and a depth of the structures, and
wherein the active mass block further comprises gas and/or temperature bridges between the channels or cavities in the interior of said active mass block, the gas and/or temperature bridges being formed by slits, perforations and/or bores.

### Claim 2 (depends on 1)

The active body according to claim 1, wherein the active mass block and the active mass substances have an incidence of radiation in the wave length range of 4.1 to 4.6 μm.

### Claim 3 (depends on 1)

The active body according to claim 1, wherein the active mass block and the active mass substances are made of monobasic or polybasic materials.

### Claim 4 (depends on 3)

The active body according to claim 3, wherein a nitrocellulose mixture is used.

### Claim 5 (depends on 4)

The active body according to claim 4, wherein the nitrocellulose mixture comprises nitroglycerine and diethylene glycol dinitrate.

### Claim 6 (depends on 1)

The active body according to claim 1, wherein the active mass block includes afflux protection.

### Claim 7 (depends on 6)

The active body according to claim 6, wherein the afflux protection is formed of a protective cap and a protective film.

### Claim 8 (depends on 1)

The active body according to claim 1, wherein the active mass substances have a higher surface to mass ratio than the active mass block.

### Claim 9 (depends on 8)

The active body according to claim 8, wherein the active mass substances are formed as sticks, flakes, wafers, or granulates.

### Claim 10 (depends on 9)

The active body according to claim 9, wherein the sticks have a diameter of about 0.2 to 1.5 mm.

### Claim 11 (depends on 1)

The active body according to claim 1, wherein the active mass substances are ignited by pyrotechnic primer compositions within the interior structure.

### Claim 12 (depends on 11)

The active body according to claim 11, wherein the pyrotechnical primer compositions comprise pulverized bore and/or potassium nitrate at a mixing ratio of 50:50, and a grain size of 0.2 to 3 mm.