Molten metal pump components
First Claim
1. A molten metal pump comprising:
- a motor;
a drive shaft comprising a motor shaft coupled to a rotor shaft, the rotor shaft having a first end and a second end wherein the first end has an outer surface and a keyway, the keyway comprising a groove formed in the outer surface;
a coupling having a first coupling member for coupling to the motor shaft and a second coupling member for connecting to the rotor shaft, the second coupling member having a projection that is removably received in the keyway;
a pump base having a pump chamber and a discharge; and
a rotor positioned at least partially in the pump chamber, the second end of the rotor shaft received in the connective portion.
2 Assignments
0 Petitions
Accused Products
Abstract
Improved components for a molten metal pump include a coupling for connecting a rotor shaft to a motor shaft, a rotor shaft and a rotor. The rotor shaft has a first end and a second end wherein the first end optionally has a vertical keyway formed in the outer surface of the shaft. The second end optionally has flat, shallow threads. The coupling can be one-piece or multi-piece, includes a cavity for receiving the first end of the rotor shaft and, if the first end of the rotor shaft has a keyway, the coupling includes a projection in the cavity for being received at least partially in the keyway. The rotor includes a connective portion that connects to the second end of the rotor shaft. If the second end of the rotor shaft includes flat, shallow threads, the connective portion is essentially a bore having flat, shallow threads configured to receive the second end of the rotor shaft. Optionally, the first end of the rotor shaft may have flat, shallow threads in which case the coupling would have a cavity that receives the first end of the rotor shaft, wherein the cavity has flat, shallow threads.
406 Citations
13 Claims
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1. A molten metal pump comprising:
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a motor; a drive shaft comprising a motor shaft coupled to a rotor shaft, the rotor shaft having a first end and a second end wherein the first end has an outer surface and a keyway, the keyway comprising a groove formed in the outer surface; a coupling having a first coupling member for coupling to the motor shaft and a second coupling member for connecting to the rotor shaft, the second coupling member having a projection that is removably received in the keyway; a pump base having a pump chamber and a discharge; and a rotor positioned at least partially in the pump chamber, the second end of the rotor shaft received in the connective portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification
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- Resources
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Current AssigneeMolten Metal Equipment Innovations Incorporated (Molten)
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Original AssigneePaul V. Cooper
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InventorsCooper, Paul V.
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Primary Examiner(s)KASTLER, SCOTT R
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Application NumberUS10/773,105Publication NumberTime in Patent Office1,791 DaysField of Search266/239US Class Current266/239CPC Class CodesF04D 29/026 especially adapted for liqu...F04D 29/044 Arrangements for joining or...F04D 29/20 Mounting rotors on shaftsF04D 7/00 Pumps adapted for handling ...F04D 7/065 for liquid metalF05D 2300/171 Steel alloysF05D 2300/20 Oxide or non-oxide ceramicsF05D 2300/224 Carbon, e.g. graphiteY10T 428/12 All metal or with adjacent ...
