Paper on Turbopump Alternative

Since the subject of turbopump alternatives comes up fairly regularly
the following recent (and interesting) paper might be of interest:

Knight, Andrew, "Designing and Testing a Lighter, Simpler, Less-
Expensive Liquid Propellant Pump", Journal of Propulsion and Power,
Vol. 20, No. 1, Jan-Feb, 2004.

The pump he describes seems remarkably similar, in appearance at
least, to the Comprex supercharger.

The author, Andrew Knight, identifies himself as the proprietor of
Andrew Knight Space Propulsion. A Google search didn't turn up any
additional information.

If you can't find a copy of the paper you can look up his patent #
6,499,288 online.

Does anyone have any additional information or opinions about Mr.
Knight and his pump?

Jim Davis