# US 4,394,836 A · Rifle-grenade with bullet pass-through device

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- Number: US 4,394,836 A
- Document ID: US4394836A
- Status: Granted
- Kind: A
- Application number: 06/208,691
- Filed: 1980-11-20
- Granted: 1983-07-26
- Earliest claimed: 1979-11-30
- Assignees: Fabrique Nationale Herstal, en abrege FN, Societe Anonyme
- Inventors: Rene M. Chavee; Andre J. Gabriels
- Web page: https://patentgrep.com/patent/US4394836A

## CPC

- F42B 30/06: Bullet traps or bullet decelerators therefor
- F42B: EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION (explosive compositions C06B; fuzes F42C; blasting F42D)

## Abstract

The invention pertains to a rifle-grenade, of the type comprising a head prolonged by a tubular shank, the aforesaid head being traversed by an axial bore running into the bore of the aforesaid tubular shank, characterized in that a plug is forced into one of the aforesaid bores, this plug being made from a material the hardness of which ranges from approximately 30 Shore A to approximately 70 Shore D.

## Claims

### Claim 1

Rifle-grenade, of the type comprising a head which is prolonged by a tubular shank, the aforesaid head being traversed by an axial bore running into the bore of the aforesaid tubular shank, characterized in that a bullet-pass-through device, of a single piece of material, is located in one of the aforesaid bores, this bullet-pass-through device being made from a material the hardness of which ranges from approximately 30 Shore A to approximately 70 Shore D.

### Claim 2 (depends on 1)

Rifle-grenade according to claim 1, characterized in that the aforesaid bullet-pass-through device is backed by a shoulder provided for this purpose in the bore under consideration.

### Claim 3 (depends on 2)

Rifle-grenade according to claim 2, characterized in that the aforesaid shoulder is located at the junction between the two aforesaid bores.

### Claim 4 (depends on 2)

Rifle-grenade according to claim 2, characterized in that the diameter of the aforesaid bullet-pass-through device is of such magnitude, relative to the diameter of the aforesaid bore so as to permit radial expansion of the aforesaid bullet-pass-through device.