Jeffrey E Clements

US Patent:

7140812, Nov 28, 2006

Filed:

May 29, 2002

Appl. No.:

10/159925

Inventors:

William J. Bryan - Mahtomedi MN, US
Nelson D. Sewall - Forest Lake MN, US
Jeffrey E. Clements - New Richmond WI, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B23B 27/20

US Classification:

407119, 407113, 29557

Abstract:

In one embodiment, a tool used for creating grooves in a microreplication tool is described. The tool includes a mounting structure and a multi-tipped diamond mounted in the mounting structure. The different tips of the diamond may correspond to different grooves to be created in the microreplication tool. In this manner, the creation of a microreplication tool using a diamond can be simplified and/or improved.

US Patent:

7510462, Mar 31, 2009

Filed:

Jun 16, 2006

Appl. No.:

11/454319

Inventors:

William J. Bryan - Mahtomedi MN, US
Nelson D. Sewall - Forest Lake MN, US
Jeffrey E. Clements - New Richmond WI, US
Greg E. Schrank - Bloomington MN, US
Jennifer L. Trice - Eagan MN, US
Timothy L. Hoopman - River Falls WI, US
Charles N. DeVore - Hugo MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

B24B 1/00

US Classification:

451 48, 29557, 72325, 7237021, 125 1301, 125 22, 125 3001, 409131, 451 49

Abstract:

In one embodiment, a cutting tool assembly used for creating grooves in a microreplication tool is described. The cutting tool assembly includes a mounting structure and multiple diamonds mounted in the mounting structure. For example, first and second tool shanks having first and second diamond tips can be positioned in the mounting structure such that a cutting location of a diamond cutting tip of the first tool shank is a defined distance from a cutting location of a diamond cutting tip of the second tool shank. The defined distance may correspond to an integer number of pitch spacings, and may be accurate to within a tolerance of less than approximately 10 microns.

US Patent:

7669508, Mar 2, 2010

Filed:

Oct 29, 2007

Appl. No.:

11/926902

Inventors:

Mark E. Gardiner - Santa Rosa CA, US
Jeffrey E. Clements - Oakdale MN, US
Mark R. Dupre - Oakdale MN, US

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

B23B 3/00

US Classification:

82118, 82123, 82157

Abstract:

A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and a shank on the tool post holding at least one machined tool tip and possibly other tool tips. The tool tip has diffractive features in contact with the work piece in order to machine macro-scale features having nano-scale features. The machined work piece can be used to make articles having diffractive features such as optical films having lenslets.

US Patent:

7852570, Dec 14, 2010

Filed:

May 6, 2009

Appl. No.:

12/436156

Inventors:

Mark E. Gardiner - Santa Rosa CA, US
Jeffrey E. Clements - Oakdale MN, US
Mark R. Dupre - Oakdale MN, US

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

G02B 13/20

US Classification:

359707, 359530

Abstract:

A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with at least one machined tool tip and possibly other tool tips. The actuator provides for control of the movement of the tool tip in an x-direction into and out of the work piece in order to make continuous or discontinuous diffractive features in it. The machined work piece can be used to make articles having diffractive features such as optical films having lenslets.

US Patent:

20040045419, Mar 11, 2004

Filed:

Sep 10, 2002

Appl. No.:

10/241247

Inventors:

William Bryan - Mahtomedi MN, US
Nelson Sewall - Forest Lake MN, US
Jeffrey Clements - New Richmond WI, US
Greg Schrank - Bloomington MN, US

International Classification:

B26D001/00
B26D003/00

US Classification:

083/013000

Abstract:

In one embodiment, a cutting tool assembly used for creating grooves in a microreplication tool is described. The cutting tool assembly includes a mounting structure and multiple diamonds mounted in the mounting structure. For example, first and second tool shanks having first and second diamond tips can be positioned in the mounting structure such that a cutting location of a diamond cutting tip of the first tool shank is a defined distance from a cutting location of a diamond cutting tip of the second tool shank. The defined distance may correspond to an integer number of pitch spacings, and may be accurate to within a tolerance of less than approximately 10 microns.

US Patent:

20070039433, Feb 22, 2007

Filed:

Oct 23, 2006

Appl. No.:

11/551772

Inventors:

William Bryan - Mahtomedi MN, US
Nelson Sewall - Forest Lake MN, US
Jeffrey Clements - New Richmond WI, US

International Classification:

B23B 3/22

US Classification:

082013000, 407119000

Abstract:

In one embodiment, a tool used for creating grooves in a microreplication tool is described. The tool includes a mounting structure and a multi-tipped diamond mounted in the mounting structure. The different tips of the diamond may correspond to different grooves to be created in the microreplication tool. In this manner, the creation of a microreplication tool using a diamond can be simplified and/or improved.

US Patent:

20080166190, Jul 10, 2008

Filed:

Jan 5, 2007

Appl. No.:

11/620093

Inventors:

Mark E. Gardiner - Santa Rosa CA, US
Jeffrey E. Clements - Oakdale MN, US
Mark R. Dupre - Oakdale MN, US

International Classification:

B26D 3/00

US Classification:

407 11, 407 72, 428 98

Abstract:

A cutting tool assembly having a tool post capable of lateral movement along a work piece to be cut and an actuator with at least one machined tool tip and possibly other tool tips. The actuator provides for control of the movement of the tool tip in an x-direction into and out of the work piece in order to make continuous or discontinuous diffractive features in it. The machined work piece can be used to make articles having diffractive features such as optical films having lenslets.