US2304849A - Pump - Google Patents

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Publication number
US2304849A
US2304849A US334007A US33400740A US2304849A US 2304849 A US2304849 A US 2304849A US 334007 A US334007 A US 334007A US 33400740 A US33400740 A US 33400740A US 2304849 A US2304849 A US 2304849A
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United States
Prior art keywords
pump
motor
shaft
arms
housing
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US334007A
Inventor
Edward J Ruthman
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Edward J Ruthman
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Publication date
Application filed by Edward J Ruthman filed Critical Edward J Ruthman
Priority to US334007A priority Critical patent/US2304849A/en
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Publication of US2304849A publication Critical patent/US2304849A/en
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Application status is Expired - Lifetime legal-status Critical

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/06Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals
    • F04D7/065Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being hot or corrosive, e.g. liquid metals for liquid metal

Description

Dec. 15, 1942'. E. 1. RUTHMAN I ,8

Filed May 8, 1940 3 Sheets-Sheet 1 INVENTOR. EDWARD J, Rurmmw A TTORNEY 1942- E. J. IRUTHMAN 2,304,849

nnuu

Filed May 8, 1940 3 Sheets-Sheet 2 III A TTORNEY II I I VENTOR.

7 5 EDWARDNJ. RUTH/WAN 1 1g 7 I fl D .15,1 E. J. RUTHMAN 2,304,849

PUMP

Filed May 8, 1940 3 Sheets-Sheet 3 JNVENFOE V EDWARD J. Rvrnmmv A TTORNEY'.

Patented Dec. 15, 1942 UNITED STATES PATENT OFFICE Y Edward J. Ruthman, Cincinnati, Ohio Application May 8, 1940, Serial N0. 334,007

Claims.

This invention relates to improvements in a pump, particularly a pump for circulating or pumping metals when in the hot molten state, such as molten solder, molten babbitt, etc.

One of the principal objects of 'this invention is theprovision of a pump, as above identified, in which means are provided for maintaining the pump shaft in a cool condition at all times to prevent the transmission of heat to the motor and parts associatedtherewith.

Another object of this invention is the provision of a pump for circultaing molten metal, which is relatively inexpensive to produce and is highly eificient in operation.

Another object of this invention is the provision of a pump, for the purpose above specified, which is relatively simple in construction and operation.

Other objects and advantages of the present invention should be readily apparent by reference to the following specification, considered in conjunction with the accompanying drawings, forming a part thereof, and it is'to be understood that any modifications may be made in the exact structural details there shown and described, within the scope of the appended claims, without departing from or exceeding the spirit of the invention.

In the drawings:

Fig. 1 is a front elevation of the pump, embodying the improvements of this invention, with a portion of the tank broken away.

Fig. 2 is a view taken at right angles to Fig. 1 and as seen from the lefthand side of said Fig. 1.

Fig. 3 is a horizontal sectional view taken on line 33 of Fig. 1.

Fig. 4 is a horizontal sectional view taken on line 4-4 of Fig. 2.

Fig. 5 is a horizontal sectional view taken in a plane below that of Fig. 4 on line 5-5 ofFig. 2.

Fig. 6 is a horizontal sectional view taken on a plane below that of Fig. 5 on line 66 on Fig. 2.

Fig. 7 is a vertical sectional view through the pump and motor shaft taken on line 1-1 on Fig. 1.

Fig. 8 is a horizontal sectional .view through the pump taken on line 8-8 on Fig. 1.

Fig. 9 is an enlarged fragmentary elevational view of a portion of Fig. 1, showing a modification in the cooling mechanism.

Fig. 10 is a horizontal sectional view takenon line ill-J0 on Fig. 9.

. Fig. 11 is a vertical sectional view taken online V Specifically referring to the drawings, the pump of this mechanism comprises an electric motor .I 5 from which projects the motor shaft [6. The lower end of the motor shaft i6 is received in a pump housing H. The pump housing I'll, see .Figs. 7 and 8, encloses an impeller 18 carried by the lower end of the shaft [6. The upper and lower ends of the housing ll are closed by cap plates i9 and 20, each providedwith an aperture or eye 2| for supplying theinteriorof .the'hous- .endof the motor 15.

ing ll. Extending fromone side of the housing,

preferably tangentially thereof, is a discharge port 22 to which is connected in any suitable or desirable manner the discharge pipe or .conduit 23. 1

Integral with and extending upwardly from the cap plate I9 is a casting or connectinghousing 2'4, which comprises a pair of upright arms 25 and 26, terminating at their upper ends inia flange 21. The flange 21 hascentrallythereof an aperture through which the motor shaft l6 passes. Secured to the outer surface of the flange 21 is a short spacer housing 29comprisingarms 30 and 3| connecting flanges 32 and .33. The flange 32 is provided with a counter bore for an anti-friction bearing 34 for the shaft l6. Contacting with the flange 33 is the lower Suitable bolts 35 are employed for securing the pump housing I7, housingcasting M, spacer housing 29 and motor t5 to-one another to form .a unit and vertically position the motor with respect to the pump. Securedto shaft l 6 between the arms 25 and 26 are a pluralityof fans 36, each of which comprises a disc 37 having upstanding therefrom fanb1ades'38 and asleeve 39. Each ofthese fans is located in a passageway Hi formed across the motor shaft by a plurality of fins 'ILonefin being located above eachfan ilfi, and the fins beingcast integral at diametrical points {With the verticalhousing arms .25 and-26. -These sign a fqr :fiimmeiins .aii eth QQ lh P 15 315 21f V 2,304,849 I ways is around the shaft [6 and thereby dissibraced as at 18 throughout their length. Pro- V jecting forwardly from said arms, at their upper 'ends, is a pair of guides 45 and 46, each pro vided with a suitable guiding aperture 41 for guide rods 48 and 49. The guide'rods 48 and pump prior to the cooling of the metal to the. point of freezing the pump impeller [8. At the same time, there has been provided a pump. which will maintain the .pump shaft in acool state while the pump is within the hot molten metal. Y

In order to further cool the pumpshaft and to provide a definite band or zone to interrupt the,v heat flow, use is made, as shown in Figs. 9, 10: and :llyo'f a; water jacket in place of the air' cooled zone at the short connecting housing 29. This water jacket comprises a circular water i'rtight casting 61, having at diametrically opposite sides threaded apertures 68 and 69, respectively 49 have their ends threaded intogears 56 and 5j A projecting laterally of. the motor l5.

respectively, are cables 52 and 53, each passing around a pulley 54 and 55 rotatively mounted at tl ie forward ends of "projections 56 and 5-1 extending from the uppermost brace 18 of frame arms 43 and 44. The free ends of the cables 52 and 53 are attached to a counterweight. 58 adapted to operate between the pulleys 54 and 55 and the motor l5, as will later be made clear.

\fllgrwardly of the pump supportingframe, the

top 42 is provided with an opening 59 normallyclosed by a pair of plates 60 and 6|. The

' have their meeting edges re- :to accommodate the plates fifl and 6| c essed""as at 62 and 63 .housing arms 25. and 26 and shaft 16, and to substantially completely close the opening 59 around Secured to the upper ends of the guide rods 48 and 49- sewer or cooling chamber.

for supply and discharge pipes or conduits l0 and, the former of which is connected with a. suitable tap, While the latter is connected with a The lower end or bottom 12 of the casting 61 is counterbored to receive the anti-friction bearing 34 and is provided with tapped bosses "projecting interiorly of the casting. The top 14 of the casting is like-iwise provided with interiorly projecting tapped bosses I5. 7 suitable cap screws or bolts for connecting the motor I5 thereto, as well as connecting the housing 24 thereto, all as above described in making a unitary assembly of the pump [1. and

motor I5. 7

The operation of the modified construction in Figs. 9, 10 and 11 is the same as that above de- 1 scribed, except that instead of depending solely 3 v on the circulation of air for keeping the motor these parts soas to prevent loss of heat from-thetank and splashing of molten metal; The plates and 6| are retained, within the opening 59 by a supporting ledge 19 secured to the under surface of the tank top 42 around said opening. To one side of the tank opening 59,- the tank top 42 provided with a recess 64 through which the discharge pipe or conduit 23" from the pump extends. r

The operation of this mechanism is as-follows:

The metal is maintained in a molten state to 7 a heighth approximately as indicated at 65 in Fig.

1, leaving a space above the metal and below the tank top, indicated by the reference numeral 66, of an amount to accommodate the housing l1 above the molten metal; In order to insert'the pump within the tank, the plates 66 and 61 are removed and the pump disposed below the tank top, whereupon the plates 66 and 6| are replaced to closely engage the arms 25 and 26 and shaft l6. In order to lower the pump into the molten metal,. it is only necessary to vertically downwardly actuate same to a point below the top of the molten metal 65. Rotation of the motor 15 thereupon circulates the molten metal supplied to the pump housing by eyes 2| through the discharge conduit 23. Rotation of the motor l5 and its shaft l6 immediately causes operation of the fans 36 for maintaining a cooling flow of air around this shaft and stopping the travel of the heat upwardly thereof.

When itis desired to stop the flow of the molten metal, the pump and parts connected therewith,while the motor is still driving same, are raised to a position for placing the pump above the molten metal high line 65 so thatthe pump maydischarge itself and prevent any metal from remaining within the pump to freeze the pump when'the metal congeals. e

From this, it will be seen that there has been provided a pump for circulating molten metal and in which the metal isdischarged from the shaft cool, this air cooling is supplemented by the water jacket 61 and the flow of water through 1 this jacket in maintaining the shaft in a cooled condition.

What is claimed is: a 1. In a pump of the class described, the combination of a pump un'it, a motor unit, means spacedly securing the pump and motor unit to one another, including a pair of spaced arms, means connecting said arms and forming passageways between the arms located at spaced points along the spacing means, a shaft between the motor unit and pumping unit,-and a plurality of fans on said shaft, each located in a passageway. i V

2. In a pump of the class described the combination of a pump housing encircling an im: peller and having its sides open, a closure plate for each open side of the pump housing, a motor, means for connecting the pump housing "and motor comprising a pair of spaced arms'having their one ends integral with one ofthe closure plates and extending therefrom, means for connecting the other ends of the arms, and a water jacket casing having one side connected with the arms connecting means and the other side connected with the motor, and a motor shaft extending through the Water jacket and between the their one ends integral with one of the closure plates and extending therefrom, means for; con-.

necting the'other ends of the arms, and a water jacket casing having one side connected with the arms connecting means and the other side connected with the motor, a motor shaft extending The bosses 13 and 15 each receive through the water jacket and between the spaced arms, additional meanscarried by said'arn'isb f tween the housing closure plate and the arms connecting means for forming passage ways ing a top and containing molten metal, a pump adapted to be submerged in the molten metal, a motor for driving the pump and located above the tank top when the pump is submerged, spacing means located partly above and partly below the tank top for connecting the motor and pump, a shaft between the motor and pump and disposed centrally of the spacing means, said spacing means including a pair of spaced arms, means for connecting the arms at spaced point above the tank top when the pump is submerged to form air passage ways transversely of the shaft, and a plurality of fans carried by the shaft one in each transverse air passage way for causing an air circulation therethrough,

I 5. In a mechanism of the class described for circulating molten metal, comprising a tank having a top and containing molten metal, a pump adapted to be submerged in the molten metal, a motor for driving a pump and located above the tank top when the pump is submerged, spacing means located partly above and partly below the tank top for connecting the motor and pump, a shaft between the motor and pump and located centrally of the spacing means, said spacing means including a pair of spaced arms extending from the pump and having their ends, remote,

from the pump, connected to one another, and a water jacket casing having one side connected to the arms connecting means and the other side connected to the motor, additional means connecting the arms at spaced points between the tank top and the upper ends thereof to form air passage ways transversely of the shaft, and a plurality of fans carried by the shaft one in each air passage way for causing an air circulation therethrough.

EDWARD J. RUTHMAN.

US334007A 1940-05-08 1940-05-08 Pump Expired - Lifetime US2304849A (en)

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Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515097A (en) * 1946-04-10 1950-07-11 Extended Surface Division Of D Apparatus for feeding flux and solder
US2528210A (en) * 1946-12-06 1950-10-31 Walter M Weil Pump
US2981525A (en) * 1954-12-31 1961-04-25 Ajem Lab Inc Apparatus for handling overspray paint
US3255702A (en) * 1964-02-27 1966-06-14 Molten Metal Systems Inc Hot liquid metal pumps
US3333545A (en) * 1965-12-17 1967-08-01 Morton Int Inc Centrifugal pump
US3984234A (en) * 1975-05-19 1976-10-05 Aluminum Company Of America Method and apparatus for circulating a molten media
US6019576A (en) * 1997-09-22 2000-02-01 Thut; Bruno H. Pumps for pumping molten metal with a stirring action
US7906068B2 (en) 2003-07-14 2011-03-15 Cooper Paul V Support post system for molten metal pump
US8075837B2 (en) 2003-07-14 2011-12-13 Cooper Paul V Pump with rotating inlet
US8178037B2 (en) 2002-07-12 2012-05-15 Cooper Paul V System for releasing gas into molten metal
US8337746B2 (en) 2007-06-21 2012-12-25 Cooper Paul V Transferring molten metal from one structure to another
US8361379B2 (en) 2002-07-12 2013-01-29 Cooper Paul V Gas transfer foot
US8366993B2 (en) 2007-06-21 2013-02-05 Cooper Paul V System and method for degassing molten metal
US8444911B2 (en) 2009-08-07 2013-05-21 Paul V. Cooper Shaft and post tensioning device
US8449814B2 (en) 2009-08-07 2013-05-28 Paul V. Cooper Systems and methods for melting scrap metal
US8524146B2 (en) 2009-08-07 2013-09-03 Paul V. Cooper Rotary degassers and components therefor
US8529828B2 (en) 2002-07-12 2013-09-10 Paul V. Cooper Molten metal pump components
US8535603B2 (en) 2009-08-07 2013-09-17 Paul V. Cooper Rotary degasser and rotor therefor
US8613884B2 (en) 2007-06-21 2013-12-24 Paul V. Cooper Launder transfer insert and system
US8714914B2 (en) 2009-09-08 2014-05-06 Paul V. Cooper Molten metal pump filter
US9011761B2 (en) 2013-03-14 2015-04-21 Paul V. Cooper Ladle with transfer conduit
US9108244B2 (en) 2009-09-09 2015-08-18 Paul V. Cooper Immersion heater for molten metal
US9156087B2 (en) 2007-06-21 2015-10-13 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9205490B2 (en) 2007-06-21 2015-12-08 Molten Metal Equipment Innovations, Llc Transfer well system and method for making same
US9409232B2 (en) 2007-06-21 2016-08-09 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US9410744B2 (en) 2010-05-12 2016-08-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9643247B2 (en) 2007-06-21 2017-05-09 Molten Metal Equipment Innovations, Llc Molten metal transfer and degassing system
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10138892B2 (en) 2014-07-02 2018-11-27 Molten Metal Equipment Innovations, Llc Rotor and rotor shaft for molten metal
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump

Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515097A (en) * 1946-04-10 1950-07-11 Extended Surface Division Of D Apparatus for feeding flux and solder
US2528210A (en) * 1946-12-06 1950-10-31 Walter M Weil Pump
US2981525A (en) * 1954-12-31 1961-04-25 Ajem Lab Inc Apparatus for handling overspray paint
US3255702A (en) * 1964-02-27 1966-06-14 Molten Metal Systems Inc Hot liquid metal pumps
US3333545A (en) * 1965-12-17 1967-08-01 Morton Int Inc Centrifugal pump
US3984234A (en) * 1975-05-19 1976-10-05 Aluminum Company Of America Method and apparatus for circulating a molten media
US6019576A (en) * 1997-09-22 2000-02-01 Thut; Bruno H. Pumps for pumping molten metal with a stirring action
US8440135B2 (en) 2002-07-12 2013-05-14 Paul V. Cooper System for releasing gas into molten metal
US8529828B2 (en) 2002-07-12 2013-09-10 Paul V. Cooper Molten metal pump components
US9435343B2 (en) 2002-07-12 2016-09-06 Molten Meal Equipment Innovations, LLC Gas-transfer foot
US8178037B2 (en) 2002-07-12 2012-05-15 Cooper Paul V System for releasing gas into molten metal
US8110141B2 (en) 2002-07-12 2012-02-07 Cooper Paul V Pump with rotating inlet
US8361379B2 (en) 2002-07-12 2013-01-29 Cooper Paul V Gas transfer foot
US9034244B2 (en) 2002-07-12 2015-05-19 Paul V. Cooper Gas-transfer foot
US8409495B2 (en) 2002-07-12 2013-04-02 Paul V. Cooper Rotor with inlet perimeters
US8501084B2 (en) 2003-07-14 2013-08-06 Paul V. Cooper Support posts for molten metal pumps
US8075837B2 (en) 2003-07-14 2011-12-13 Cooper Paul V Pump with rotating inlet
US7906068B2 (en) 2003-07-14 2011-03-15 Cooper Paul V Support post system for molten metal pump
US8475708B2 (en) 2003-07-14 2013-07-02 Paul V. Cooper Support post clamps for molten metal pumps
US10345045B2 (en) 2007-06-21 2019-07-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US10352620B2 (en) 2007-06-21 2019-07-16 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US10458708B2 (en) 2007-06-21 2019-10-29 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US10274256B2 (en) 2007-06-21 2019-04-30 Molten Metal Equipment Innovations, Llc Vessel transfer systems and devices
US8613884B2 (en) 2007-06-21 2013-12-24 Paul V. Cooper Launder transfer insert and system
US10195664B2 (en) 2007-06-21 2019-02-05 Molten Metal Equipment Innovations, Llc Multi-stage impeller for molten metal
US8753563B2 (en) 2007-06-21 2014-06-17 Paul V. Cooper System and method for degassing molten metal
US10072891B2 (en) 2007-06-21 2018-09-11 Molten Metal Equipment Innovations, Llc Transferring molten metal using non-gravity assist launder
US9017597B2 (en) 2007-06-21 2015-04-28 Paul V. Cooper Transferring molten metal using non-gravity assist launder
US8366993B2 (en) 2007-06-21 2013-02-05 Cooper Paul V System and method for degassing molten metal
US9982945B2 (en) 2007-06-21 2018-05-29 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US9909808B2 (en) 2007-06-21 2018-03-06 Molten Metal Equipment Innovations, Llc System and method for degassing molten metal
US9156087B2 (en) 2007-06-21 2015-10-13 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9205490B2 (en) 2007-06-21 2015-12-08 Molten Metal Equipment Innovations, Llc Transfer well system and method for making same
US9862026B2 (en) 2007-06-21 2018-01-09 Molten Metal Equipment Innovations, Llc Method of forming transfer well
US9855600B2 (en) 2007-06-21 2018-01-02 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9643247B2 (en) 2007-06-21 2017-05-09 Molten Metal Equipment Innovations, Llc Molten metal transfer and degassing system
US8337746B2 (en) 2007-06-21 2012-12-25 Cooper Paul V Transferring molten metal from one structure to another
US9409232B2 (en) 2007-06-21 2016-08-09 Molten Metal Equipment Innovations, Llc Molten metal transfer vessel and method of construction
US9581388B2 (en) 2007-06-21 2017-02-28 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9566645B2 (en) 2007-06-21 2017-02-14 Molten Metal Equipment Innovations, Llc Molten metal transfer system and rotor
US9383140B2 (en) 2007-06-21 2016-07-05 Molten Metal Equipment Innovations, Llc Transferring molten metal from one structure to another
US9925587B2 (en) 2007-06-21 2018-03-27 Molten Metal Equipment Innovations, Llc Method of transferring molten metal from a vessel
US9382599B2 (en) 2009-08-07 2016-07-05 Molten Metal Equipment Innovations, Llc Rotary degasser and rotor therefor
US8444911B2 (en) 2009-08-07 2013-05-21 Paul V. Cooper Shaft and post tensioning device
US9506129B2 (en) 2009-08-07 2016-11-29 Molten Metal Equipment Innovations, Llc Rotary degasser and rotor therefor
US9422942B2 (en) 2009-08-07 2016-08-23 Molten Metal Equipment Innovations, Llc Tension device with internal passage
US10428821B2 (en) 2009-08-07 2019-10-01 Molten Metal Equipment Innovations, Llc Quick submergence molten metal pump
US8449814B2 (en) 2009-08-07 2013-05-28 Paul V. Cooper Systems and methods for melting scrap metal
US9470239B2 (en) 2009-08-07 2016-10-18 Molten Metal Equipment Innovations, Llc Threaded tensioning device
US9657578B2 (en) 2009-08-07 2017-05-23 Molten Metal Equipment Innovations, Llc Rotary degassers and components therefor
US9377028B2 (en) 2009-08-07 2016-06-28 Molten Metal Equipment Innovations, Llc Tensioning device extending beyond component
US9328615B2 (en) 2009-08-07 2016-05-03 Molten Metal Equipment Innovations, Llc Rotary degassers and components therefor
US8524146B2 (en) 2009-08-07 2013-09-03 Paul V. Cooper Rotary degassers and components therefor
US8535603B2 (en) 2009-08-07 2013-09-17 Paul V. Cooper Rotary degasser and rotor therefor
US9080577B2 (en) 2009-08-07 2015-07-14 Paul V. Cooper Shaft and post tensioning device
US9464636B2 (en) 2009-08-07 2016-10-11 Molten Metal Equipment Innovations, Llc Tension device graphite component used in molten metal
US8714914B2 (en) 2009-09-08 2014-05-06 Paul V. Cooper Molten metal pump filter
US10309725B2 (en) 2009-09-09 2019-06-04 Molten Metal Equipment Innovations, Llc Immersion heater for molten metal
US9108244B2 (en) 2009-09-09 2015-08-18 Paul V. Cooper Immersion heater for molten metal
US9410744B2 (en) 2010-05-12 2016-08-09 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9482469B2 (en) 2010-05-12 2016-11-01 Molten Metal Equipment Innovations, Llc Vessel transfer insert and system
US9903383B2 (en) 2013-03-13 2018-02-27 Molten Metal Equipment Innovations, Llc Molten metal rotor with hardened top
US10126058B2 (en) 2013-03-14 2018-11-13 Molten Metal Equipment Innovations, Llc Molten metal transferring vessel
US9587883B2 (en) 2013-03-14 2017-03-07 Molten Metal Equipment Innovations, Llc Ladle with transfer conduit
US10302361B2 (en) 2013-03-14 2019-05-28 Molten Metal Equipment Innovations, Llc Transfer vessel for molten metal pumping device
US10126059B2 (en) 2013-03-14 2018-11-13 Molten Metal Equipment Innovations, Llc Controlled molten metal flow from transfer vessel
US9011761B2 (en) 2013-03-14 2015-04-21 Paul V. Cooper Ladle with transfer conduit
US10322451B2 (en) 2013-03-15 2019-06-18 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10307821B2 (en) 2013-03-15 2019-06-04 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10052688B2 (en) 2013-03-15 2018-08-21 Molten Metal Equipment Innovations, Llc Transfer pump launder system
US10138892B2 (en) 2014-07-02 2018-11-27 Molten Metal Equipment Innovations, Llc Rotor and rotor shaft for molten metal
US10465688B2 (en) 2014-07-02 2019-11-05 Molten Metal Equipment Innovations, Llc Coupling and rotor shaft for molten metal devices
US10267314B2 (en) 2016-01-13 2019-04-23 Molten Metal Equipment Innovations, Llc Tensioned support shaft and other molten metal devices

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