Lee Ann Carman

age ~63

from Sutton, MA

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Lee Carman Phones & Addresses

Vitrified Bonded Abrasive Tools
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US Patent:

6702867, Mar 9, 2004
Filed:

Sep 10, 2002
Appl. No.:

10/221252
Inventors:

Lee A. Carman - Sutton MA
Irvin F. Havens - Belfast NY
Wesley A. King - Brighton MA
Assignee:

Saint-Gobain Abrasives Technology Company - Worcester MA
International Classification:

B24D 302
US Classification:

51307, 51309, 51293, 51308
Abstract:

The present invention provides a vitrified-bonded abrasive tool wherein the abrasive grit portion comprises a thermally sensitive abrasive grain, such as sintered sol gel microcrystalline alpha alumina abrasive grain or superabrasive grain, and wherein the vitrified bond may be matured by firing at a temperature of about 700 to 1,100 Â C. The invention preferably is carried out with sintered sol gel microcrystalline alpha alumina abrasive grain and a phosphorous oxide-containing, alkaliborosilicate vitrified bond composition. In one embodiment, during firing at about 700 to 1,100 Â C. , the vitrified bond of the invention comprises at least two immiscible, amorphous phases.

Process Of Producing Self-Bonded Ceramic Abrasive Wheels
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US Patent:

52212947, Jun 22, 1993
Filed:

Apr 27, 1992
Appl. No.:

7/873847
Inventors:

Lee A. Carman - Worcester MA
William S. Coblenz - Arlington VA
Janet L. Hammarstrom - Auburn MA
Assignee:

Norton Company - Worcester MA
International Classification:

B24D 1800
US Classification:

51296
Abstract:

A grinding tool is described which comprises self-bonded particles of a ceramic abrasive and has a voids volume of from 5 to 65%.

Glass-Ceramic Bonded Abrasive Tools
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US Patent:

61237434, Sep 26, 2000
Filed:

Feb 4, 1994
Appl. No.:

8/192088
Inventors:

Lee A. Carman - Worcester MA
Shuyuan Liu - Shrewsbury MA
Assignee:

Norton Company - Worcester MA
International Classification:

B24D 318
C04B 35111
US Classification:

51307
Abstract:

The present invention provides an abrasive tool that comprises sol-gel alumina abrasive grains bonded together by a glass-ceramic bond material, the tool comprising from about 35 to 65% by volume void spaces, wherein at least about 75% of the volume of the bond material is located in the bond posts or in a coating on the abrasive grains and in which the volume proportion of bond to grain is from about 0. 06 to 0. 6.

Self-Bonded Ceramic Abrasive Wheels
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US Patent:

51605090, Nov 3, 1992
Filed:

May 22, 1991
Appl. No.:

7/704162
Inventors:

Lee A. Carman - Worcester MA
William S. Coblenz - Arlington VA
Janet L. Hammarstrom - Auburn MA
Assignee:

Norton Company - Worcester MA
International Classification:

B24D 500
US Classification:

51307
Abstract:

A grinding tool is described which comprises self-bonded particles of a ceramic abrasive and has a voids volume of from 5 to 65%.

High Speed Grinding Wheel
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US Patent:

6074278, Jun 13, 2000
Filed:

Jan 30, 1998
Appl. No.:

9/016823
Inventors:

Mianxue Wu - Worcester MA
Lee A. Carman - Worcester MA
Lars Aspensjo - Bonn, DE
Assignee:

Norton Company - Worcester MA
International Classification:

B24B 100
US Classification:

451 28
Abstract:

A method of obtaining superabrasive grinding performance from tools employing less expensive, non-superabrasive conventional abrasive grain involves operating the conventional abrasive tool at ultra high tangential contact speed, (that is at least about 125 m/s). Such ultra high operating speeds can be achieved with segmented abrasive grinding wheels having segments formed from vitreous or resin bonded particles of aluminum oxide, silicon oxide, iron oxide, molybdenum oxide, vanadium oxide, tungsten carbide, silicon carbide and the like. The abrasive segments can be cemented to the core of the tool with an adhesive such as epoxy cement. Abrasive segments can be made to a significantly greater depth than traditional superabrasive-bearing segments, and consequently, should provide long life as well as high performance. Additionally, conventional abrasive segments are easier to true and dress and to make into intricate profiles for grinding complex shaped work pieces.

Bonding Adjuvants For Vitreous Bond Formulations And Process For Bonding With
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US Patent:

52038823, Apr 20, 1993
Filed:

Jan 27, 1992
Appl. No.:

7/826543
Inventors:

Lee A. Carman - Worcester MA
Xiaoming Li - Shrewsbury MA
Assignee:

Norton Company - Worcester MA
International Classification:

B24D 300
US Classification:

51293
Abstract:

The use of small amount of silica sol in conjunction with an organic binding agent significantly increases the strength of the bond in a vitreous bonded alumina containing abrasive wheel.

High Permeability Grinding Wheels
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US Patent:

57386978, Apr 14, 1998
Filed:

Jul 26, 1996
Appl. No.:

8/687884
Inventors:

Mianxue Wu - Worcester MA
Normand D. Corbin - Northboro MA
Stephen E. Fox - Worcester MA
Thomas Ellingson - Worcester MA
Lee A. Carman - Worcester MA
Assignee:

Norton Company - Worcester MA
International Classification:

B24D 300
US Classification:

51296
Abstract:

An abrasive article having certain minimum levels of permeability to fluids comprises about 40 to 80%, by volume interconnected porosity and effective amounts of abrasive grain and bond to carry out soft grinding and deep cut grinding operations. The high permeability to the passage of fluids and interconnected porosity provides an open structure of channels to permit the passage of fluid through the abrasive article and the removal of swarf from the workpiece during grinding operations.

Glass-Ceramic Bonded Abrasive Articles
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US Patent:

53186052, Jun 7, 1994
Filed:

Jun 3, 1992
Appl. No.:

7/892493
Inventors:

Lee A. Carman - Worcester MA
Assignee:

Norton Company - Worcester MA
International Classification:

B24D 318
US Classification:

51308
Abstract:

Abrasive tools are described which comprise abrasive grits held in a glass-ceramic bond in which at least 75% of the bond material is in bond posts or in coatings on individual grains.