Robert Lee Parham

US Patent:

49967576, Mar 5, 1991

Filed:

Jan 16, 1990

Appl. No.:

7/464870

Inventors:

Robert L. Parham - Denver CO

International Classification:

B22D 1910

US Classification:

2940218

Abstract:

A one-piece pulverizing mill roller assembly and method of rebuilding the same. The roller assembly comprises a body, an integral hub portion and an integral circumferential outside tread portion which mates with an annular groove in a grinding table. The roller assembly is composed of a relatively lower hardness steel which will accept hard surface weld beads to rebuild the circumferential outside tread portion as it wears. The rebuilding can be performed in-place in the pulverizing mill.

US Patent:

50798197, Jan 14, 1992

Filed:

Oct 12, 1990

Appl. No.:

7/596930

Inventors:

Robert L. Parham - Denver CO

International Classification:

B22D 1910

US Classification:

2940218

Abstract:

A one-piece pulverizing mill roller assembly and method of rebuilding the same. The roller assembly comprises a body, an integral hub portion and an integral circumferential outside tread portion which mates with an annular groove in a grinding table. The roller assembly is composed of a relatively lower hardness steel which will accept hard surface weld beads to rebuild the circumferential outside tread portion as it wears. The rebuilding can be performed in-place in the pulverizing mill.

US Patent:

51275929, Jul 7, 1992

Filed:

May 6, 1991

Appl. No.:

7/695644

Inventors:

Robert L. Parham - Denver CO

International Classification:

B02C 1500

US Classification:

241293

Abstract:

A one-piece pulverizing mill roller assembly and method of rebuilding the same. The roller assembly comprises a body, an integral hub portion and an integral circumferential outside tread portion which mates with an annular groove in a grinding table. The roller assembly is composed of a relatively lower hardness steel which will accept hard surface weld beads to rebuild the circumferential outside tread portion as it wears. The rebuilding can be performed in-place in the pulverizing mill.

US Patent:

55381928, Jul 23, 1996

Filed:

Aug 16, 1994

Appl. No.:

8/291430

Inventors:

Robert L. Parham - Denver CO

International Classification:

B02C 1504

US Classification:

241 30

Abstract:

A plunger can structure and a mated spring compressor system. The plunger can includes a plunger tip and an indicator rod extending from the plunger tip through the plunger can and out the opposite end of the plunger can. Removal and replacement of a shim between the plunger tip and the roller assembly which adjust the force on the roller assembly, can be easily accomplished without opening the clamshell doors to the mill by drawing the indicator rod out of the opposite end of the plunger can to effect a drawing in of the plunger tip.

US Patent:

50508105, Sep 24, 1991

Filed:

Jun 18, 1990

Appl. No.:

7/539574

Inventors:

Robert L. Parham - Denver CO

International Classification:

B02C 1514

US Classification:

241293

Abstract:

A one-piece pulverizing mill roller assembly and method of rebuilding the same. The roller assembly comprises a body, an integral hub portion and an integral circumferential outside tread portion which mates with an annular groove in a grinding table. The roller assembly is composed of a relatively lower hardness steel which will accept hard surface weld beads to rebuild the circumferential outside tread portion as it wears. The rebuilding can be performed in-place in the pulverizing mill.

US Patent:

59512776, Sep 14, 1999

Filed:

Nov 1, 1996

Appl. No.:

8/740710

Inventors:

Robert L. Parham - Denver CO

Assignee:

The Robert L. Parham Trust - Daytona Beach Shores FL

International Classification:

F23D 2100

US Classification:

431170

Abstract:

A shield in the form of a "cast refrac" (S. U. B. S. ) for a diffuser port in a circulating fluidized bed to deflect eroding particulates away from the port. The S. U. B. S. includes an upper portion with a tear-drop shape, a lower portion, and side intermediate portions to surround the port, and an attached insert to be received by or around the port.

US Patent:

52421236, Sep 7, 1993

Filed:

May 20, 1991

Appl. No.:

7/694965

Inventors:

Robert L. Parham - Denver CO

International Classification:

B02C 2500

US Classification:

241 375

Abstract:

A substantially one-piece cast plunger can structure and a mated spring compressor system. The plunger can includes a removable plunger bearing on one end that is attached to the plunger can with both interlocking lugs and bolts and is designed for removal with a spring compressor that holds it in place.