Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Turbo machine
Reexamination Certificate
2005-03-22
2005-03-22
Lopez, F. Daniel (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Turbo machine
C415S200000, C416S24400R
Reexamination Certificate
active
06869271
ABSTRACT:
A molten metal pump system which generally provides a refractory connection joint for connecting a refractory pump post to a pump base, the pump post including a refractory post with a first end, the first end including an internally threaded joint screw aperture; a refractory base with a post aperture configured to receive the first end of the refractory post, and with a screw aperture contiguous with the post aperture; and a joint screw with a first end and a second end, the joint screw including a threaded external surface and a retention shoulder, the joint screw configured to insert through the screw aperture in the refractory base with the threaded external surface engaging the internally threaded joint screw aperture of the refractory post, and the retention shoulder engaging the refractory base.
REFERENCES:
patent: 2110379 (1938-03-01), Lannert
patent: 3776660 (1973-12-01), Anderson et al.
patent: 6451247 (2002-09-01), Mordue et al.
patent: 6551060 (2003-04-01), Mordue et al.
Gilbert Ronald
Palmer Mark
Kershteyn Igor
Lopez F. Daniel
Pyrotek Inc.
Wells St.John P.S.
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