Pumps – Including disengageable rotary or frangible drive connection
Patent
1994-11-10
1997-04-22
Thorpe, Timothy
Pumps
Including disengageable rotary or frangible drive connection
415 9, 403 2, F16D 906
Patent
active
056224818
ABSTRACT:
An apparatus for pumping molten metal is disclosed. The apparatus includes a submergible pump housing, a rotatable impeller disposed within the pump housing, an impeller shaft having one end coupled to the impeller and extending through an opening in the pump housing, a motor-driven rotating drive shaft and a coupling member engaging an end of the drive shaft and an opposite end of the impeller shaft and a shear pin extending between the coupling member and one of the drive shaft and impeller shaft thereby coupling the drive shaft and the impeller shaft. Preferably, the coupling member is a female coupling member having two shaft receiving openings receiving the drive shaft end and the second end of the impeller shaft and includes a pair of aligned transverse apertures. A graphite pin is inserted through the coupling member apertures and extends through a transverse bore near the end of the impeller shaft. The graphite pin is held in place by a wire wrapped around an outer periphery of the coupling. The wire includes looped ends which are adapted to be twisted and thereby holding the pin in place.
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One page advertisement for L Series molten metal pumps by Metaullics Systems Co., undated.
One page advertisement for M Serial Aluminum Molten Metal Pumps by Metaullics Systems, Co,, undated.
One page schematic drawing for a molten metal pump, source unknown, undated.
Six page brochure for "M Series" molten metal pumps by Metaullics Systems Co., copyright 1984.
Sixteen page operating instruction booklet for Metaullics Molten Transfer Pumps, by the Carborundum Company, copyright 1980.
Sixteen page operating instruction booklet for Metaullics Transfer Pump Systems for Molten Metal Metaullics Systems Co., copyright 1984.
Sixteen page operating instruction booklet for Metaullics De-Gas/De-Mag systems for Aluminum, Metaullics Systems Co., dated Apr. 1, 1985.
Four page folder listing models of molten metal pumps by High Temperature Systems, Inc., published at least as early as Jun., 1990.
One page advertisement for replacement parts for M9000CSD Gas Injection Pump, High Temperature Systems, Inc., published at least as early as Oct., 1986.
One page advertisement for replacement parts for A5000C and A9000CMolten Metal Pump, High Tempeature Systems, Inc.,published at least as early as Sep. 1986.
One page advertisement for replacement parts for M5000CDS gas injection pump High Temperature Systems, Inc.,published at least as early as Oct., 1986.
One page advertisement for replacement parts for M5000C molten metal pump High Temperature Systems, Inc., dated Jul. 1986.
Fourteen page operating instruction booklet for Metaullics Circulation Systems for Aluminum, Metaullics Systems Co., copyright 1984.
Four page installation booklet for Mark II molten metal pumps, High Temperature Systems, Inc.,published at least as early as Sep. 1973.
Korytnyk Peter G.
Thorpe Timothy
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