Transport hose with safety channel and method of using the hose

Details Transport hose with safety channel and method of using the hose Transport hose with safety channel and method of using the hose

1999-01-21

2000-07-25

Walberg, Teresa

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

4174773, F04B 4308

Patent

active

060930020

ABSTRACT:
A hose has an internal longitudinal channel in its sidewall as a safety device, to provide a prompt indication of impending failure or leakage into or out of the hose. A hose pump featuring such a hose is an improvement over conventional peristaltic pumps. A squeezing member constricts the hose to move a conveyed product along the hose, thereby causing wear on the hose. Such wear usually manifests itself first as a leak through an inner liner of the hose into the channel. The entrance of conveyed product into the channel, which can be detected by a change in pressure or electrical conductivity, is used as an indicator for wearing out of the hose. The use of such a hose minimizes release of hazardous conveyed materials from the hose into the environment or contamination of conveyed sensitive materials such as foodstuffs by the surrounding environment.

REFERENCES:
patent: 3887306 (1975-06-01), Gerritsen
patent: 4540350 (1985-09-01), Streicher
patent: 4576556 (1986-03-01), Thompson
patent: 4585399 (1986-04-01), Baier
patent: 5049048 (1991-09-01), Streicher

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