# US 2014/0196624 A1 · Safe and arm explosive train

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2014/0196624 A1
- Document ID: US20140196624A1
- Status: Published application
- Kind: A1
- Application number: 14/193,661
- Filed: 2014-02-28
- Published: 2014-07-17
- Earliest claimed: 2010-12-26
- Assignees: Rafael Advanced Defense Systems Ltd.
- Inventors: Shai Rahimi; Evgenia Golda Fradkin
- Web page: https://patentgrep.com/patent/US20140196624A1

## CPC

- F42C 15/28: operated by flow of fluent material, e.g. shot, fluids (F42C15/26 takes precedence)
- F42C 15/18: wherein a carrier for an element of the pyrotechnic or explosive train is moved (F42C15/40 takes precedence)
- F42C 15/184: using a slidable carrier
- F42C 15/188: using a rotatable carrier
- F42C: AMMUNITION FUZES (blasting cartridge initiators F42B3/10; chemical aspects C06C); ARMING OR SAFETY MEANS THEREFOR (filling fuzes F42B33/02; fitting or extracting primers in or from fuzes F42B33/04; containers for fuzes F42B39/30)

## Abstract

A Safe-and-Arm system for the prevention of unintentional operation of an explosive device by interrupting a detonation train, the system employing an interruptive transfer assembly made of silicon and suitable for implementing in a MEMS device, the assembly including a silicon based transfer charge carrier on a porous explosive passageway made by etching, the passageway extending between at least two ports on the circumference of the transfer assembly, and a drive means that can mechanically bring about at least one armed state of a detonation train.

## Claims

### Claim at position 1

1-5. (canceled)

### Claim 6

A mechanical interruptive transfer assembly for a Safe-and-Arm system, the mechanical interruptive transfer assembly comprising:
a linearly shiftable transfer charge carrier comprising silicon, the linearly shiftable transfer charge carrier defining a continuous channel from an input port at the circumference of the transfer charge carrier to an output port at the circumference of the transfer charge carrier, wherein
the continuous channel comprises porous silicon, and
an oxidizer is associated with the continuous channel to create an explosive porous passageway.

### Claim 7 (depends on 6)

The mechanical interruptive transfer assembly of claim 6, wherein the linearly shiftable transfer charge carrier is non-circular in shape.

### Claim 8 (depends on 6)

The mechanical interruptive transfer assembly of claim 6, wherein the oxidizer is a peroxide, a nitrate, a perchlorate, or combinations thereof.

### Claim 9 (depends on 7)

The mechanical interruptive transfer assembly of claim 7, wherein the oxidizer is a peroxide, a nitrate, a perchlorate, or combinations thereof.

### Claim 10 (depends on 6)

A Safe-and-Arm system, the system comprising:
the mechanical interruptive transfer assembly of claim 6,
at least one input charge associated with the input port; and
at least one output charge associate with the output port.

### Claim 11 (depends on 10)

The Safe-and-Arm system of claim 10, further comprising at least one detonation initiator associated with the at least one input charge.

### Claim 12 (depends on 7)

A Safe-and-Arm system, the system comprising:
the mechanical interruptive transfer assembly of claim 7,
at least one input charge associated with the input port; and
at least one output charge associate with the output port.

### Claim 13 (depends on 12)

The Safe-and-Arm system of claim 12, further comprising at least one detonation initiator associated with the at least one input charge.

### Claim 14 (depends on 8)

A Safe-and-Arm system, the system comprising:
the mechanical interruptive transfer assembly of claim 8,
at least one input charge associated with the input port; and
at least one output charge associate with the output port.

### Claim 15 (depends on 14)

The Safe-and-Arm system of claim 14, further comprising at least one detonation initiator associated with the at least one input charge.

### Claim 16 (depends on 9)

A Safe-and-Arm system, the system comprising:
the mechanical interruptive transfer assembly of claim 9,
at least one input charge associated with the input port; and
at least one output charge associate with the output port.

### Claim 17 (depends on 16)

The Safe-and-Arm system of claim 16, further comprising at least one detonation initiator associated with the at least one input charge.