| US 7,357,685 B2 | ||
| Jet pump tail cone insert | ||
| Timothy Edward Bushman, 250 Coleen St., Livermore, Calif. 94550 (US) | ||
| Filed on Feb. 28, 2006, as Appl. No. 11/365,786. | ||
| Claims priority of provisional application 60/667225, filed on Mar. 31, 2005. | ||
| Prior Publication US 2006/0223389 A1, Oct. 05, 2006 | ||
| Int. Cl. B63H 11/00 (2006.01); B63H 11/10 (2006.01); B63H 11/103 (2006.01) | ||
| U.S. Cl. 440—38 [440/47] | 20 Claims |
| 1. A method of decreasing a flow area within a jet pump, comprising:
disposing a jet pump tail cone insert encompassing a portion of a bearing hub of the jet pump, said jet pump tail cone insert
including:
an end member having an interior and an exterior opposite said interior, an upper portion and a lower portion opposite said
upper portion, a plurality of projections configured to matingly receive a plurality of forks, and a plurality of receivers
configured to receive at least one stator vane of said bearing hub;
a body having an interior and an exterior opposite said interior, an upper portion and a lower portion opposite said upper
portion, said plurality of forks configured to matingly attach to said plurality of projections, and a plurality of receivers
configured to receive said at least one stator vane of the jet pump, said body is configured to be physically positioned about
said at least one stator vane, said lower portion of said body configured to matingly couple to said upper portion of said
end member; and
a cap having an interior and an exterior opposite said interior and an upper portion and a lower portion opposite said upper
portion, said lower portion of said cap configured to matingly couple to said upper portion of said body; and
wherein said jet pump tail cone insert occupies space proximate said bearing hub thereby increasing a flow rate of water through
the jet pump.
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