John C Duncan

US Patent:

6595508, Jul 22, 2003

Filed:

Jun 11, 2001

Appl. No.:

09/878795

Inventors:

John S. Duncan - Independence KY

Assignee:

Duncan Associates - Cincinnati OH

International Classification:

B25B 110

US Classification:

269242, 269 43

Abstract:

A vise ( ) having a control aperture ( ) at an accessible end ( ) of a screw rod ( ) and extending along the rotational axis ( ) thereof. The aperture ( ) is sized and shaped to accept the anvil ( ) of a drive mechanism ( ) so that upon rotation of the anvil ( ) along its torque axis ( ), screw rod ( ) rotates about its rotational axis ( ). At least one of a pair of jaws ( ) is operatively associated with screw rod ( ) to thereby vary the spacing ( ) therebetween as screw rod ( ) rotates under control of the anvil ).

US Patent:

7463417, Dec 9, 2008

Filed:

Feb 13, 2006

Appl. No.:

11/276070

Inventors:

John E. Duncan - Amelia OH, US
Michael W. O'Keefe - Cincinnati OH, US
Roy A. Auerbach - Cincinnati OH, US
Peter M. Olofson - Oakdale MN, US
Christopher R. Boyer - Shorewood MN, US
Ying-Yuh Lu - Woodbury MN, US
Jianhui Xia - Woodbury MN, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G02B 5/30

US Classification:

359485, 359483

Abstract:

A curable composition is provided which includes an oligomer having a plurality of pendent and/or terminal ethylenically unsaturated, free-radically polymerizable functional groups, a free-radically polymerizable crosslinking agent, and/or a diluent monomer, and a photoinitiator. The composition, when cured, is non-yellowing, exhibits low shrinkage and low birefringence making it suitable for many optical applications such as optical lenses, optical fibers, prisms, light guides, optical adhesives, and optical films.

US Patent:

7529029, May 5, 2009

Filed:

Jun 28, 2006

Appl. No.:

11/427091

Inventors:

John E. Duncan - Amelia OH, US
Michael W. O'Keefe - Cincinnati OH, US
Jiaying Ma - Maplewood MN, US
Patrick R. Destain - Plano TX, US

Assignee:

3M Innovative Properties Company - Saint Paul MN

International Classification:

G02B 27/14

US Classification:

359637, 359634, 359638

Abstract:

A polarizing beam splitter that includes at least one prism, and a reflective polarizing film. The prism comprises a first polymeric material, and has at least one curved outer surface and an incident surface, where the reflective polarizing film is disposed adjacent the incident surface.

US Patent:

7362507, Apr 22, 2008

Filed:

Jul 29, 2005

Appl. No.:

11/192655

Inventors:

John E. Duncan - Amelia OH, US
Michael W. O'Keefe - Cincinnati OH, US
William E. Phillips - Cincinnati OH, US
Jiaying Ma - Maplewood MN, US
Patrick R. Destain - Loveland OH, US

Assignee:

3M Innovative Properties Company - St. Paul MN

International Classification:

G02B 27/14
G02B 5/30

US Classification:

359637, 359634, 359495

Abstract:

A polarizing beam splitter is disclosed that includes a first prism, a second prism, and a reflective polarizing film disposed between the first prism and the second prism. The first prism comprises a first polymeric material, and has a first outer curved surface and an additional outer surface. The second prism comprises a second polymeric material, which in some embodiments may be the same as the first polymeric material, and has a second outer curved surface.

US Patent:

20030214089, Nov 20, 2003

Filed:

Jun 18, 2003

Appl. No.:

10/464295

Inventors:

John Duncan - Independence KY, US

Assignee:

Duncan and Associates - Cincinnati OH

International Classification:

B25B005/10

US Classification:

269/246000

Abstract:

A vise () having a control aperture () at an accessible end () of a screw rod () and extending along the rotational axis () thereof. The aperture () is sized and shaped to accept the anvil () of a drive mechanism () so that upon rotation of the anvil () along its torque axis (), screw rod () rotates about its rotational axis (). At least one of a pair of jaws () is operatively associated with screw rod () to thereby vary the spacing () therebetween as screw rod () rotates under control of the anvil ().

US Patent:

20070023941, Feb 1, 2007

Filed:

Jul 29, 2005

Appl. No.:

11/192681

Inventors:

John Duncan - Amelia OH, US
Michael O'Keefe - Cincinnati MN, US
Jiaying Ma - Maplewood MN, US
Rusty Parrett - Batavia OH, US

International Classification:

B29D 11/00

US Classification:

264001700

Abstract:

The present disclosure is directed to methods of making polarizing beam splitters. An exemplary method includes supporting a polarizing film within a mold, where the polarizing film has a first surface and a second surface, injecting a polymeric material into the mold adjacent the first surface of the polarizing film, solidifying the first polymeric material to form a first prism, and securing a second prism to the second surface of the polarizing film. Another exemplary method includes injection molding a component of the polarizing beam splitter including a first polymeric material and heat treating the first component up to a temperature that does not exceed about 20 C. below a glass transition temperature of the first polymeric material.

US Patent:

20070085973, Apr 19, 2007

Filed:

Dec 7, 2006

Appl. No.:

11/567939

Inventors:

John Duncan - Amelia OH, US
Michael O'Keefe - Cincinnati OH, US
William Phillips - Cincinnati OH, US
Jiaying Ma - Maplewood MN, US
Patrick Destain - Loveland OH, US

International Classification:

G03B 21/14

US Classification:

353020000

Abstract:

A polarizing beam splitter is disclosed that includes a first prism, a second prism, and a reflective polarizing film disposed between the first prism and the second prism. The first prism comprises a first polymeric material, and has a first outer curved surface and an additional outer surface. The second prism comprises a second polymeric material, which in some embodiments may be the same as the first polymeric material, and has a second outer curved surface.

US Patent:

20080013051, Jan 17, 2008

Filed:

Jul 14, 2006

Appl. No.:

11/457599

Inventors:

Alexander L. Glinski - Cincinnati OH, US
John E. Duncan - Amelia OH, US
Charles L. Bruzzone - Woodbury MN, US
Audrey A. Sherman - St. Paul MN, US

International Classification:

G03B 21/14

US Classification:

353 20

Abstract:

An image display system including an illumination source configured to emit a light beam, a polarizing beam splitter, and an image-forming device. The polarizing beam splitter includes a reflective polarizer and an absorptive polarizer disposed adjacent to the reflective polarizer, where the absorptive polarizer is configured to receive a first portion of the light beam that has transmitted through the reflective polarizer. The image-forming device is disposed to receive a second portion of the light beam that has been reflected by the reflective polarizer.

Address:

3004 Oakview Dr, Pittsburg, KS 66762

Phone:

(620)2321436

VIN:

KNDMC233276039741

Make:

HYUNDAI

Model:

ENTOURAGE

Year:

2007

Address:

2678 Wendee Dr APT 2316, Cincinnati, OH 45238

VIN:

3GNDA33P47S516025

Make:

CHEV

Model:

HHR

Year:

2007