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Linear tractor dry coal extrusion pump

United States Patent

7,387,197
June 17, 2008
View the Complete Patent at the US Patent & Trademark Office
A pump for transporting particulate material includes an inlet, an outlet, a passageway, a first and second load beam, a first and second scraper seal, and a first and second drive assembly. The inlet introduces the particulate material into the passageway and the outlet expels the particulate material from the passageway. The passageway is defined by a first belt assembly and a second belt assembly that are opposed to each other. The first and second load beams are positioned within the first belt assembly and the second belt assembly, respectively. The first scraper seal and a second scraper seal are positioned proximate the passageway and the outlet. The first drive assembly is positioned within an interior section of the first belt assembly and drives the first belt assembly and the second drive assembly is positioned within an interior section of the second belt assembly and drives the second belt assembly.
Sprouse; Kenneth M. (Northridge, CA), Matthews; David R. (Simi Valley, CA)
Pratt & Whitney Rocketdyne, Inc. (Canoga Park, CA)
11/ 520,154
September 13, 2006
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with the support of the United States Government under Contract No. DE-FC26-04NT42237 awarded by the Department of Energy (DOE). The United States Government has certain rights in the invention.