Power plants – Reaction motor – Liquid oxidizer
Reexamination Certificate
2006-03-07
2006-03-07
Freay, Charles G. (Department: 3746)
Power plants
Reaction motor
Liquid oxidizer
C417S122000, C417S125000, C417S126000, C417S147000
Reexamination Certificate
active
07007456
ABSTRACT:
Disclosed is a pneumatically powered high-pressure and lightweight fluid pump. The pump is useful for pumping fuel for liquid rocket engines and for pumping water, such as for fire suppression. During operation of the pump, liquid is drained from a tank into a pump chamber and the chamber is then pressurized to deliver fluid. The chamber is then refilled from the main tank. An auxiliary chamber supplies fuel while the main chamber is being filled, thereby a steady stream is delivered from the pump. The auxiliary chamber is refilled from the tank while the main chamber is delivering fluid. The design results in substantial weight savings over a system in which the main tank is pressurized or a system with two pump chambers of similar size. The auxiliary chamber of the present disclosure has a smaller capacity than the main chamber. The main chamber is designed to be filled much faster than it is emptied, therefore the smaller auxiliary chamber supplies fluid only during the time while the larger main chamber is being filled.
REFERENCES:
patent: 1306762 (1919-06-01), Higginson
patent: 3213804 (1965-10-01), Sobey
patent: 4239054 (1980-12-01), Van Rijn
patent: 4678040 (1987-07-01), McLaughlin et al.
patent: 5092743 (1992-03-01), Dietrich
patent: 5148945 (1992-09-01), Geatz
patent: 5832948 (1998-11-01), Schell
patent: 6095759 (2000-08-01), Breslin
patent: 6200104 (2001-03-01), Park
patent: 6213348 (2001-04-01), Le Grouyellec
patent: 6314978 (2001-11-01), Lanning et al.
patent: 6368068 (2002-04-01), Corlew et al.
patent: 6644930 (2003-11-01), Kuismanen
Felix Godwin: Exploring the Solar System: Plenum Press, 1960 (pp 21-22).
Andrew Case: “Arocket Archives”, Apr. 23, 2002 (http://blastzone.com/arocket/listarchivesmessage.asp?id—93173.
LandOfFree
Dual chamber pump and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Dual chamber pump and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual chamber pump and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3585377