	US 7,513,755 B2
	Submerged motor and pump assembly
Penrod Geisinger, Dewey, Ariz. (US); Mark C. Johnson, Phoenix, Ariz. (US); Jason L. Addink, Phoenix, Ariz. (US); Scott D. Klopfenstein, Phoenix, Ariz. (US); and Gregory E. Young, Chino Valley, Ariz. (US)
Assigned to Vaporless Manufacturing, Inc., Prescott, Ariz. (US)
Filed on Jul. 01, 2004, as Appl. No. 10/883,229.
Claims priority of provisional application 60/485047, filed on Jul. 03, 2003.
Prior Publication US 2005/0019184 A1, Jan. 27, 2005
Int. Cl. F04B 17/03 (2006.01); F01D 25/24 (2006.01); F03B 11/08 (2006.01)

U.S. Cl. 417—366 [417/423.3; 417/423.9; 417/423.12; 417/424.1; 415/121.2; 415/221; 415/222]

3 Claims

1. In a fuel delivery assembly having a storage tank for the fuel, a superstructure mounted upon the storage tank, a leak detector for receiving fuel to be dispensed from a chamber in the superstructure, the improvement comprising:

a) an in-line motor and pump assembly for pumping fuel from the storage tank to the chamber, said in-line motor and pump assembly including a brushless direct current motor;

b) a pipe and an internal conduit defining a first annular passageway for conveying the fuel from said in-line motor and pump assembly to the chamber;

c) a motor mount assembly for mounting the stator of said motor, said motor mount assembly including three converging arcuate passageways for conveying fuel from a second annular passageway to a tube holder;

d) said in-line motor and pump assembly including a common shaft, a lower journal bearing, a thrust bearing and an upper bearing for supporting the rotor of said motor and an impeller of said pump wherein said upper bearing supports an upper end of said shaft and at least one radial passageway in fluid communication with at least one of said arcuate passageways for conveying fuel to said upper bearing to lubricate and cool said upper bearing;

e) a throat unit defining a throat adapted in configuration to said impeller for conveying the fuel in response to rotation of said impeller;

f) a housing in combination with said motor mount assembly defining said second annular passageway and for immersing said lower journal bearing, said thrust bearing and said upper bearing in the fuel for purposes of lubrication and cooling; and

g) said tube holder attached to said motor mount assembly for channeling flow of fuel from said second annular passageway to said first annular passageway.