# US 2013/0239307 A1 · Chemical protective suit

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- Number: US 2013/0239307 A1
- Document ID: US20130239307A1
- Status: Published application
- Kind: A1
- Application number: 13/819,266
- Filed: 2010-08-26
- Published: 2013-09-19
- Earliest claimed: 2010-08-26
- Assignees: Shigematsu Works Co., Ltd.
- Inventors: Takashi Ozawa; Kazutaka Tanino; Seiko Nitta
- Web page: https://patentgrep.com/patent/US20130239307A1

## CPC

- A62B 17/006: {against contamination from chemicals, toxic or hostile environments; ABC suits}
- A41D 13/002: with controlled internal environment
- A41D 13/02: Overalls {, e.g. bodysuits or bib overalls} (sweating suits A61H36/00)
- A41H 43/04: Joining garment parts or blanks by gluing or welding (mending garments by adhesives or adhesive patches A41H27/00) {; Gluing presses}
- A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00)
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41H: APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR

## Abstract

[Object of the Invention]An object of the present invention is to provide a chemical protective suit easier to produce and more comfortable to wear than a conventional chemical protective suit. [Disclosure of the Invention]A chemical protective suit comprises a head portion for covering the part of a human body extending from the top of the head to the neck, a body portion for covering the part of a human body extending from the chest to the abdomen, a pair of arm portions for covering the parts of a human body extending from the shoulders to the wrists, a pair of leg portions for covering the parts of a human body extending from the abdomen to the calves, and a pair of foot portions for covering the parts of a human body extending from the calves to the toes. The aforementioned portions are integrated into a unitary body by integrating a plurality of sheet fabric pieces. The integrated portion of each pair of two adjacent sheet fabric pieces in each of the foot portions comprises a seam line extending along peripheral edges of two adjacent sheet fabric pieces stacked on each other, with the peripheral edges opposed to each other, and a welded portion of the stacked sheet fabric pieces of a predetermined breadth extending along the seam line, with the peripheral edges and the welded portion disposed to face opposite sides of the seam line. The integrated portion of the two adjacent sheet fabric pieces in each of the foot portions is exposed to the external air.

## Claims

### Claim 1

A chemical protective suit comprising a head portion for covering the part of a human body extending from the top of the head to the neck, a body portion for covering the part of a human body extending from the chest to the abdomen, a pair of arm portions for covering the parts of a human body extending from the shoulders to the wrists, a pair of leg portions for covering the parts of a human body extending from the abdomen to the calves, and a pair of foot portions for covering the parts of a human body extending from the calves to the toes, wherein the aforementioned portions are integrated into a unitary body by integrating a plurality of sheet fabric pieces, and wherein the integrated portion of each pair of adjacent sheet fabric pieces in each of the foot portions comprises a seam line extending along peripheral edges of two adjacent sheet fabric pieces stacked on each other, with the peripheral edges opposed to each other, and a welded portion of the stacked sheet fabric pieces of a predetermined breadth extending along the seam line, with the peripheral edges and the welded portion disposed to face opposite sides of the seam line, and wherein the integrated portion of each pair of adjacent sheet fabric pieces in each of the foot portions is exposed to the external air.

### Claim 2 (depends on 1)

A chemical protective suit of claim 1, wherein each of the sheet fabric pieces forming the foot portions is a multi-layer sheet fabric piece comprising a front surface layer of thermoplastic resin film, a rear surface layer of thermoplastic resin film, and at least one middle layer of chemical permeability resistant resin film, and wherein the welded portion is formed using high frequency dielectric heating.

### Claim 3 (depends on 2)

A chemical protective suit of claim 2, wherein the thermoplastic resin film forming the front surface layer and the rear surface layer of the sheet fabric piece is polyurethane resin film.

### Claim 4 (depends on 2)

A chemical protective suit of claim 2, wherein the thermoplastic resin film forming the front surface layer and the rear surface layer of the sheet fabric piece is polyvinyl chloride resin film.

### Claim 5 (depends on 1)

A chemical protective suit of claim 1, wherein each of the sheet fabric pieces forming the foot portions further comprises a middle layer of lattice fabric.

### Claim 6 (depends on 1)

A chemical protective suit of claim 1, wherein the leg portions comprise flaps for annularly covering the top outer circumferences of boots fitted on the foot portions.