# US 7,612,352 B2 · Material activating device

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- Number: US 7,612,352 B2
- Document ID: US7612352B2
- Status: Granted
- Kind: B2
- Application number: 10/583,009
- Filed: 2005-01-19
- Published: 2008-11-06
- Granted: 2009-11-03
- Earliest claimed: 2005-01-19
- Assignees: W.F.N. Co., Ltd.
- Inventors: Yukio Iizuka; Makoto Tanaka
- Web page: https://patentgrep.com/patent/US7612352B2

## CPC

- G21G 4/04: Radioactive sources other than neutron sources (radioactive dressings A61N5/1029)
- H01M 10/42: Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells (H01M10/60 takes precedence)
- H01M 10/4242: {Regeneration of electrolyte or reactants}
- H01M 10/06: Lead-acid accumulators (semi-lead accumulators H01M10/20)
- Y02E 60/10: Energy storage using batteries
- G21G: CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES (applications of radiation in general G21H5/00; handling particles, e.g. neutrons, or electromagnetic radiation not otherwise provided for G21K)
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

There is provided a material activating device capable of being formed in any one of various shapes and having an improved material activating effect. A material activating device formed by superposing a plurality of polymer film 31 each having one surface coated with a metal film 32, and radioactive layer 33 of a radioactive means has a very small thickness and is very flexible. The metal films 32 are insulated from each other by the electrically insulating polymer films 31 and are spaced from each other by a distance corresponding to the thickness of the polymer films 31. Consequently, the material activating effect of the radioactive rays emitted by the radioactive layer 33 of the radioactive means is enhanced.

## Claims

### Claim 1

A material activating device comprising: (i) a radioactive layer of a radioactive means that emits radioactive rays for irradiating a material to be activated, (ii) a conductive metal layer disposed on one side of the radioactive layer of the radioactive means so as to be interposed between the radioactive layer of the radioactive means and the material to be activated, and (iii) a base member;
wherein the conductive metal layer is the wall of a hollow casing of a conductive metal,
the radioactive layer of the radioactive means is disposed inside the casing, and the base member is made of a conductive metal, closely attached to the casing and designed to be attached to the material to be activated, and is formed by nesting a plurality of polygonal, annular members.

### Claim 2 (depends on 1)

The material activating device according to claim 1, wherein the casing is a tubular member having a rectangular cross section.

### Claim 3 (depends on 1)

The material activating device according to claim 1, wherein the casing is a tubular member having a circular cross section.

### Claim 4 (depends on 1)

The material activating device according to claim 1, wherein at least a part of the casing is formed in a conical shape and the part having the conical shape has an apex.

### Claim 5 (depends on 1)

The material activating device according to claim 1, wherein the casing is a circular cylinder of a conductive metal which is flattened after inserting the radioactive layer of the radioactive means in the casing to hold the radioactive layer of the radioactive means therein.

### Claim 6 (depends on 1)

The material activating device according to claim 1, wherein the base member has a plurality of corners.

### Claim 7 (depends on 1)

The material activating device according to claim 1, wherein the plurality of polygonal, annular members are made of different conductive metals, respectively.