# US 2020/0399847 A1 · Pneumatic fender

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- Number: US 2020/0399847 A1
- Document ID: US20200399847A1
- Status: Published application
- Kind: A1
- Application number: 16/629,695
- Filed: 2018-06-07
- Published: 2020-12-24
- Earliest claimed: 2017-07-12
- Assignees: The Yokohama Rubber Co., Ltd.
- Applicants: The Yokohama Rubber Co., Ltd.
- Inventors: Kouko TSUCHIYA; Minami SHIBUYA; Keiichi HASEGAWA; Gang HOU; Satoshi SHIBAYAMA; Akihiro IEMOTO; Shunichi ONO; Michito KANEKO
- Web page: https://patentgrep.com/patent/US20200399847A1

## CPC

- E02B 3/26: Fenders ({fenders for protecting offshore constructions E02B17/003}; fenders integral with waterborne vessels or specially adapted therefor B63B59/02)
- B63B 2059/025: {pneumatic, e.g. inflatable}
- Y02A 30/30: in transportation, e.g. on roads, waterways or railways
- E02B: HYDRAULIC ENGINEERING (ship-lifting E02C; dredging E02F)
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

In a pneumatic fender, reinforcing layers of a body portion and reinforcing layers of a predetermined range in the longitudinal direction of a fender near a boundary between each hemispherical portion and the body portion are formed by aligning cords of reinforcing layers of the body portion and that of the predetermined range in parallel, and in a neutral state without expansion, the cords of the reinforcing layers of the body portion meet each other and the cords of the reinforcing layers of the predetermined range meet each other, and cord angles A and B are each set to from 15° to 45° with respect to the longitudinal direction of the fender. When the interior of the fender is set to a specified internal pressure, the cord angles A and B increase to extent of a static angle, and the body portion and the predetermined range expand.

## Claims

### Claim 1

A pneumatic fender comprising
hemispherical portions each having a bowl shape at both ends of a body portion having a cylindrical shape;
the body portion and the respective hemispherical portions being configured by layering a plurality of reinforcing layers between an inner layer rubber and an outer layer rubber;
a reinforcing layer of the plurality of reinforcing layers of the body portion is a cord layer formed by aligning a number of cords in parallel;
the cords of the reinforcing layers layered adjacent to each other meeting and being disposed at a predetermined cord angle with respect to a longitudinal direction of the fender, and in a neutral state without expansion the cord angle being set to from 15° to 45°; wherein
a predetermined range in the longitudinal direction of the fender in the reinforcing layers constituting each of the hemispherical portions near a boundary with the body portion is a cord layer formed by aligning a number of cords in parallel, and
the cords of the reinforcing layers layered adjacent to each other meet and are disposed at a predetermined cord angle with respect to the longitudinal direction of the fender and in the neutral state the cord angle is set to from 15° to 45°.

### Claim 2 (depends on 1)

The pneumatic fender according to claim 1, wherein the cord angle in the neutral state of the reinforcing layer constituting the body portion is set smaller than the cord angle in the neutral state of the reinforcing layer in the predetermined range.

### Claim 3 (depends on 1)

The pneumatic fender according to claim 1, wherein the number of the reinforcing layers constituting the body portion and the number of the reinforcing layers in the predetermined range are each from 4 to 12.

### Claim 4 (depends on 2)

The pneumatic fender according to claim 2, wherein the number of the reinforcing layers constituting the body portion and the number of the reinforcing layers in the predetermined range are each from 4 to 12.