Title:
SYSTEM AND METHOD FOR DELIVERING REACTIVE FLUIDS TO REMOTE APPLICATION SITES
Document Type and Number:
WIPO Patent Application WO2003057357
Kind Code:
A3
Abstract:
Reactive fluids that react upon contact and are intended to be combined only at a site of application that is remote or not easily accessible are transported to the site by separate crescent internal gear pumps whose pump rates are governed by a control loop that uses individual mass flow rates and a common automatic controller. In preferred embodiments, a multi-lumen cable is used to convey the pump outputs individually to the application site, and an application head at the distal end of the cable both combines the individual flows and dispenses them to the site. The invention is useful for a variety of reactive systems and applications, but particularly for applying two-component epoxy linings to underground pipes.
Inventors:
BIRDSALL JAMES L
JOHNSON DAVID H
JOHNSON DAVID H
Application Number:
PCT/US2002/041583
Publication Date:
October 23, 2003
Filing Date:
December 26, 2002
Export Citation:
Assignee:
NEOPOXY CORP (US)
International Classes:
B01J4/02; (IPC1-7): F04B41/06; C07C51/31
Foreign References:
| US5360325A | 1994-11-01 | |||
| US5020375A | 1991-06-04 | |||
| US6288274B1 | 2001-09-11 |
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