The Yokohama Rubber Co., Ltd.

Fumihiko Yazaki

Masashi Wakabayashi

Masuo Kuroda

Koji Nakatani

Jun Arakawa

Naoyuki Ohoka

Riki Takeda

Yukinori Honda

Hiroyuki Ohsawa

A liquid-transferring hose of single-carcass configuration, with a rubber tube layer, main pressure-resistant cord layer and cover rubber layer, in this order from the inside, wherein a transponder installed between the rubber tube layer and cover rubber layer transmits and receives waves of specific frequency, which are attenuated by at least -60 dB when passing through liquid to be transferred, and transmits a response signal on receiving the above waves. This design prevents the response signal transmitted by the transponder, when it is covered with leaked liquid, from being detected, to tell occurrence of liquid leakage, allowing liquid leakage to be easily detected during the initial stage.

Liquid-transferring hose

Hose with releasable float for leak detection

A hose (1) includes a main pressure cord layer (5) for holding a fluid, and an auxiliary pressure cord layer (7) formed so as to sheathe the main pressure cord layer (5) and to form a buffering space (9) for retaining the fluid leaking through the main pressure cord layer (5) between the main pressure cord layer (5) and the auxiliary pressure cord layer (7). The auxiliary cord layer (7) includes first and second cord plies in an asymmetrical structural relation capable of being twisted by the pressure of the fluid leaking through the main pressure cord layer (5). Thus, even if its main pressure cord layer and its rubber tube are damaged leakage of the fluid can be prevented.

Pressure endurable hose

Growing community of inventors

Hiratsuka, Japan

Fumihiko Yazaki