James C Hanna

US Patent:

62526618, Jun 26, 2001

Filed:

Aug 2, 1999

Appl. No.:

9/366026

Inventors:

James L. Hanna - Ann Arbor MI

International Classification:

G01B 1104

US Classification:

356385

Abstract:

An inspection system for evaluating workpieces for conformance to configuration criteria including a track for causing workpieces to translate through a test section, the test section including a light source for production of a uniform sheet of light, the light source oriented with respect to the track means such that the workpieces occlude the uniform sheet of light upon passing through the test section, the test section further having a video system for receiving the occluded uniform sheet of light, providing output signals related to the intensity of the occluded uniform sheet of light incident on the video system, and a signal processing means for receiving the output signals.

US Patent:

62850342, Sep 4, 2001

Filed:

Nov 4, 1998

Appl. No.:

9/186025

Inventors:

James L. Hanna - Ann Arbor MI
Donald R. Smith - Ann Arbor MI

International Classification:

G01N 2186

US Classification:

2505592

Abstract:

An inspection system for evaluating rotationally asymmetric workpieces for conformance to configuration criteria having a track for causing the workpieces to translate through a test section, the test section including a plurality of electromagnetic energy sources, the plurality of electromagnetic energy sources oriented with respect to the track means such that the workpieces occlude the plurality of electromagnetic energy sources upon passing through the test section, the test section further having electromagnetic energy detectors for receiving the electromagnetic energy to provide output signals related to the intensity of the occluded electromagnetic energy incident on the electromagnetic energy detectors, and a signal processing means for receiving said output signals.

US Patent:

63139480, Nov 6, 2001

Filed:

Aug 2, 1999

Appl. No.:

9/366027

Inventors:

James I. Hanna - Ann Arbor MI

International Classification:

G02B 518

US Classification:

359565

Abstract:

An optical beam shaper for production of a uniform sheet of light for use in a parts inspection system having a light source including a coherent light generator, a diffractive beam shaper, and lens elements.

US Patent:

55682634, Oct 22, 1996

Filed:

Jan 6, 1995

Appl. No.:

8/369360

Inventors:

James L. Hanna - Ann Arbor MI

Assignee:

Mectron Engineering Company - Ann Arbor MI

International Classification:

G01B 1104

US Classification:

356385

Abstract:

An improved non-contact inspection system capable of evaluating spatial form parameters of a workpiece to provide 100% inspection of parts in production. The system causes parts to be sequentially loaded onto an incline track where they pass through a test section. The test section includes a length detection array for measuring the length of the workpiece, which includes a source generating a sheet of light oriented in the longitudinal direction of the workpiece. The profile of the parts are evaluated by one or more light sources also creating a sheet of light oriented transverse to the longitudinal axis of the parts. First and second pairs of single channel photodetectors are provided for each of the light sources which provides a pair of analog outputs of the extent to which each sheet of light is occluded by the part, as well as an ability to eliminate noise or scintillation caused by a point source of light, for example with a laser light source. These outputs are analyzed through appropriate signal processing hardware and software to generate length and profile data related to the workpiece geometry.

US Patent:

53830210, Jan 17, 1995

Filed:

Apr 19, 1993

Appl. No.:

8/049172

Inventors:

James L. Hanna - Ann Arbor MI

Assignee:

Mectron Engineering Company - Ann Arbor MI

International Classification:

G01B 1104
G01B 1110

US Classification:

356383

Abstract:

A non-contact inspection system capable of evaluating spatial form parameters of a workpiece to provide 100% inspection of parts in production. The system causes parts to be sequentially loaded onto an inclined track where they pass through a test section. The test section includes a length detection array for measuring the length of the workpiece, which includes a source generating a sheet of light oriented in the longitudinal direction of the workpiece. The profile of the parts are evaluated by one or more light sources also creating a sheet of light oriented transversed to the longitudinal axis of the parts. Single channel photodetectors are provided for each of the sources which provides an analog output of the extent to which each sheet of light is occluded by the part. These outputs are analyzed through appropriate signal processing hardware and software to generate length and profile data related to the workpiece geometry.

US Patent:

48312517, May 16, 1989

Filed:

Apr 18, 1988

Appl. No.:

7/182778

Inventors:

James L. Hanna - Ann Arbor MI

Assignee:

Mectron Engineering Company, Inc. - Ann Arbor MI

International Classification:

G01N 904
G06M 700
H01J 4014

US Classification:

250223R

Abstract:

An optical device for discriminating threaded workpiece by the handedness by their screw thread profiles. The device presents a pair of light beams which pass generally tangent to the workpiece at angularly displaced positions. The light beams are inclined to follow the helix direction of a given handedness of a workpiece. Upon axial advancement of a workpiece through the device, a chopped output from the photodetectors indicates that the handedness of the threads matches the inclination of the light beams. The oppositely threaded workpiece, however, provides a generally constant DC output. With appropriate signal processing electronics, an automatic system for discriminating workpieces by thread handedness is provided.

Author:

James P. Hanna

ISBN #:

0792397991

Author:

James Hanna

ISBN #:

0835902056

Author:

James Hanna

ISBN #:

0960702431

Author:

James Milton Hanna

ISBN #:

1930052073

Author:

James Milton Hanna

ISBN #:

1930052154

Author:

James Milton Hanna

ISBN #:

1930052227

Author:

James A. Hanna

ISBN #:

0919100724

Author:

James A. Hanna

ISBN #:

0919822703