Ronald D Gilbert

US Patent:

51433575, Sep 1, 1992

Filed:

Nov 19, 1990

Appl. No.:

7/614914

Inventors:

Ronald E. Gilbert - Chardon OH
George S. Mordue - Ravenna OH

Assignee:

The Carborundum Company - Niagara Falls NY

International Classification:

C21C 700

US Classification:

266235

Abstract:

Metal particles are melted by mixing them with molten metal contained in a bath. A shaft-supported, rotatable impeller is immersed into the molten metal and rotated so as to establish a vortex-like flow of molten metal. Metal particles are deposited onto the surface of the molten metal in the vicinity of the rotating impeller. The particles are submerged substantially immediately after being deposited onto the surface of the molten metal. The impeller includes a thin rectangular prism having sharp-edged corners and vanes that extend upwardly from the prism. The impeller also can be used to disperse gas into the molten metal by pumping the gas through a bore extending the length of the shaft and out of the impeller along the lower surface of the impeller. The gas is sheared into finely divided bubbles as it rises along the sides of the impeller.

US Patent:

50785729, Jan 7, 1992

Filed:

Jan 19, 1990

Appl. No.:

7/467485

Inventors:

Lutfi Amra - Cleveland Heights OH
Ronald E. Gilbert - Chardon OH
George S. Mordue - Ravenna OH

Assignee:

The Carborundum Company - Niagara Falls NY

International Classification:

F04D 2970

US Classification:

4151212

Abstract:

A molten metal pump includes a filter that prevents ingestion of foreign material such as dross from molten metal within which the pump is immersed. The filter is a large structure that is secured to the base of the pump surrounding the pump's inlet. The filter forms a cavity adjacent the pump's inlet. The filter has a low porosity while maintaining a high flow rate for the pump. The filter is a semi-toroidal structure that is attachable to a pump base having an upper inlet. The filter surrounds the pump's inlet. The filter includes a central opening through which access can be had to the pump's impeller for purposes of inspection, repair, or replacement without disturbing the attachment between the filter and base.

US Patent:

56347707, Jun 3, 1997

Filed:

Jun 5, 1995

Appl. No.:

8/460979

Inventors:

Ronald E. Gilbert - Chardon OH
David M. Masarin - Hinckley OH
George S. Mordue - Ravenna OH

Assignee:

Metaullics Systems Co., L.P. - Solon OH

International Classification:

F04D 2920

US Classification:

4152161

Abstract:

An elongated shaft suited to a molten metal environment which forms a connection between a rotor and an impeller. The shaft being formed with at least one end, in cross-section, having a plurality of rounded side portions with a relatively large radius and rounded corners having a relatively small radius connecting the side portions.

US Patent:

52861635, Feb 15, 1994

Filed:

Jun 5, 1990

Appl. No.:

7/532889

Inventors:

Lutfi Amra - Cleveland Heights OH
Ronald E. Gilbert - Chardon OH
George S. Mordue - Ravenna OH

Assignee:

The Carborundum Company - Niagara Falls NY

International Classification:

F04D 2970

US Classification:

4151212

Abstract:

A molten metal pump includes a filter that prevents ingestion of foreign material such as dross from molten metal within which the pump is immersed. The filter is a large structure that is secured to the base of the pump surrounding the pump's inlet. The filter forms a cavity adjacent the pump's inlet. The ratio of the surface area of the filter to the inlet area of the pump is very large due in part to a corrugated end wall included as part of the filter. The filter has a low porosity while maintaining a high flow rate for the pump.

US Patent:

50888935, Feb 18, 1992

Filed:

Jan 25, 1991

Appl. No.:

7/649221

Inventors:

Ronald E. Gilbert - Chardon OH
George S. Mordue - Ravenna OH

Assignee:

The Carborundum Company - Niagara Falls NY

International Classification:

F04D 1708

US Classification:

415200

Abstract:

A molten metal pump includes an impeller disposed at the end of an elongate drive shaft. The drive shaft is disposed within an elongate, hollow post. The impeller and the end of the post are adapted to be immersed in molten metal. An inert gas is conveyed through the gap between the outer surface of the drive shaft and the inner surface of the post, which gas is discharged into the molten metal in the vicinity of the impeller. Because the drive shaft is insulated from the molten metal, it can be made of a durable material such as steel; because the post is stationary relative to the molten metal, the metal is stirred only by the impeller, and not by the drive shaft. The invention includes other features such as a quick disconnect capability and a radial adjustment capability.

US Patent:

44743157, Oct 2, 1984

Filed:

Apr 15, 1982

Appl. No.:

6/368703

Inventors:

Ronald E. Gilbert - Chardon OH
George S. Mordue - Ravenna OH

Assignee:

Kennecott Corporation - Cleveland OH

International Classification:

B22D 4100

US Classification:

222629

Abstract:

A molten metal transfer device for withdrawing a selected quantity of molten metal from a bath includes structure defining a chamber disposed within the bath, the chamber including a first opening through which molten metal can flow from the bath into the chamber and a second opening through which molten metal can flow outwardly from the chamber. A cup-like bucket is disposed within the chamber for vertical reciprocating movement, the bucket having a generally vertically oriented slot included as part of its sidewall. The device includes a displacement mechanism for urging the bucket laterally toward engagement with the surface of the chamber. The device also includes mechanisms for easily removing buckets and chambers and replacing them with new buckets and chambers.

US Patent:

55585051, Sep 24, 1996

Filed:

Aug 9, 1994

Appl. No.:

8/287914

Inventors:

George S. Mordue - Ravenna OH
Richard S. Henderson - Solon OH
Ronald E. Gilbert - Chardon OH
David M. Masarin - Hinckley OH

Assignee:

Metaullics Systems Co., L.P. - Solon OH

International Classification:

F04B 3500

US Classification:

417360

Abstract:

A post for a molten metal pump having an end joined to a hole in a pump base. The post end includes a longitudinal bore opening at the end of the post and a port opening to the side of the post intersecting the bore. A plug is inserted into the bore above the level of the port yet leaving a portion of the upper bore open. Cement can be injected into the bore and out the ports. Thereafter, a second plug can be inserted into the bore to drive cement out. To remove the post, it is cut across its longitudinal axis to expose the open upper portion of the bore. The opening is a pilot hole to drill a longitudinal hole in the post. A device having two members connected by a rod are attached to the upper and lower surfaces of the remaining post, respectively and tightened to break the cement joint.

US Patent:

51818280, Jan 26, 1993

Filed:

Nov 22, 1991

Appl. No.:

7/797465

Inventors:

Ronald E. Gilbert - Chardon OH
George S. Mordue - Ravenna OH

Assignee:

The Carborundum Company - Niagara Falls NY

International Classification:

F04D 2944
F04D 2954
F01D 2524

US Classification:

415200

Abstract:

A molten metal pump includes an impeller disposed at the end of an elongate drive shaft. The drive shaft is disposed within an elongate, hollow post. The impeller and the end of the post are adapted to be immersed in molten metal. An inert gas is conveyed through the gap between the outer surface of the drive shaft and the inner surface of the post, which gas is discharged into the molten metal in the vicinity of the impeller. Because the drive shaft is insulated from the molten metal, it can be made of a durable material such as steel; because the post is stationary relative to the molten metal, the metal is stirred only by the impeller, and not by the drive shaft. The invention includes other features such as a quick disconnect capability and a radial adjustment capability.