The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2000
Filed:
Jan. 21, 1999
Norbert Schneider, Dusseldorf, DE;
Alfa Laval Flow GmbH, Dusseldorf, DE;
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.