Dana L Duncan

US Patent:

50622994, Nov 5, 1991

Filed:

Jan 5, 1990

Appl. No.:

7/461200

Inventors:

Ray E. Davis - Old Lyme CT
Dana L. Duncan - Old Lyme CT
Samir W. Habboosh - Norwich CT
James R. Hall - Clinton CT
Dennis L. Nudelman - Waterford CT
Michael J. Westkamper - Salem CT

Assignee:

Lever Brothers Company, Division of Conopco, Inc. - New York NY

International Classification:

G01N 2900

US Classification:

73609

Abstract:

A method and apparatus is reported for detecting inhomogeneities in semi-plastic substances such as toilet bars containing soap. An ultrasound probe is utilized to test the substance at an exit orifice of an extruder. Best results are obtained by utilizing a ceramic ultrasonic probe, rectangular in shape including a transducer having a concave curvature on a lower surface thereof. The probe includes a theromplastic delay material. Ultrasonic waves directed through the probe preferably have a frequency between 1 and 2. 25 MHz. Wedging of the extruded substance is also useful to improve contact with the probe as it passes through the extruder exit orifice.

US Patent:

46283536, Dec 9, 1986

Filed:

Apr 4, 1984

Appl. No.:

6/596842

Inventors:

Ray E. Davis - Old Lyme CT
Robert G. Foster - Clinton CT
Michael J. Westkamper - Oakdale CT
Dana L. Duncan - Old Lyme CT
James R. Hall - Clinton CT

Assignee:

Chesebrough-Pond's Inc. - Greenwich CT

International Classification:

H04N 718

US Classification:

358107

Abstract:

A user-friendly video measuring system employing a TV camera having a two-axis array of photosensors, a memory, a monitor, a keyboard and a joystick. The camera takes a first picture, which is stored in memory and displayed on the monitor. In response to a series of menus, an operator uses the joystick to manipulate a cursor on the monitor to locate a series of start search points for the first picture, and to select gradient threshold for one or more features. Both the start search points and gradient thresholds are stored. The operator also selects and stores tolerances for the measurements. A second picture is taken and examined, commencing with the stored start search points, to determine whether the gradients exceed the stored threshold.

US Patent:

47425563, May 3, 1988

Filed:

Sep 16, 1985

Appl. No.:

6/776613

Inventors:

Ray E. Davis - Old Lyme CT
Robert G. Foster - Clinton CT
Michael J. Westkamper - Salem CT
Dana Duncan - Old Lyme CT
James R. Hall - Clinton CT
Dennis L. Nudelman - Waterford CT

International Classification:

G06K 938

US Classification:

382 51

Abstract:

A character recognition method comprising the steps of (1) acquiring a two dimensional array of pixels, (2) locating a character, (3) determining the size of the character, (4) reducing the number of pixels associated with the character by scaling it down to a smaller dot matrix and (5) thresholding the matrix dots using a histogram to form a binary character representation.