# US 2021/0280880 A1 · Separator-integrated gasket

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- Number: US 2021/0280880 A1
- Document ID: US20210280880A1
- Status: Published application
- Kind: A1
- Application number: 17/193,450
- Filed: 2021-03-05
- Published: 2021-09-09
- Earliest claimed: 2020-03-06
- Assignees: Nok Corporation
- Applicants: Nok Corporation
- Inventors: Hajime YUI; Toshihiro SHIMAZOE; Ryo TOMITA
- Web page: https://patentgrep.com/patent/US20210280880A1

## CPC

- H01M 8/0276: Sealing means characterised by their form (H01M8/0273 takes precedence)
- H01M 8/0204: Non-porous and characterised by the material
- H01M 8/0273: with sealing or supporting means in the form of a frame
- H01M 8/0284: Organic resins; Organic polymers
- H01M 8/0286: Processes for forming seals
- Y02E 60/50: Fuel cells
- 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

A separator-integrated gasket with improved productivity includes a separator main body for a fuel cell and an elastic gasket formed integrally with the separator main body. The separator main body includes a bead and a pair of protrusions located on opposite sides of the bead to block the liquid rubber applied to the bead. The gasket is formed when the liquid rubber is cured.

## Claims

### Claim 1

A separator-integrated gasket comprising:
a separator main body for a fuel cell; and
an elastic gasket that is integral with the separator main body, wherein
the separator main body includes a bead and a pair of protrusions located on opposite sides of the bead to block liquid rubber applied to the bead, and
the gasket is formed when the liquid rubber is cured.

### Claim 2 (depends on 1)

The separator-integrated gasket according to claim 1, wherein the gasket covers a boundary section between the bead and each protrusion.

### Claim 3 (depends on 2)

The separator-integrated gasket according to claim 2, wherein the gasket covers the entire protrusions.

### Claim 4 (depends on 1)

The separator-integrated gasket according to claim 1, wherein the separator main body includes a stepped protruding section that protrudes from a flat section, a section in a center in a width direction of the stepped protruding section is the bead, and two sections in the stepped protruding section that are located on opposite sides of the bead and lower in height than the bead are the pair of protrusions.

### Claim 5 (depends on 1)

The separator-integrated gasket according to claim 1, wherein the separator main body includes three protruding sections that protrude from a flat section and are adjacent to one another, one of the three protruding sections that is located in a center is the bead, and the two protruding sections that are located on opposite sides of the bead and lower in height than the bead are the pair of protrusions.

### Claim 6 (depends on 1)

The separator-integrated gasket according to claim 1, wherein at least one pair of auxiliary protrusions capable of blocking the liquid rubber is provided, and the bead and the pair of protrusions are located between the auxiliary protrusions.