William Robert Birkett

Author:

William Birkett

ISBN #:

0868407054

US Patent:

8050487, Nov 1, 2011

Filed:

Feb 13, 2008

Appl. No.:

12/030298

Inventors:

Rick L. Kimmitt - Tipton MI, US
John R. Kolin - Adrian MI, US
William B. Birkett - Plymouth MI, US

Assignee:

Merillat Industries, LLC - Adrian MI

International Classification:

G06K 9/00

US Classification:

382141

Abstract:

Cabinet doors are compared to color samples as a quality control check on the colors of the manufacture doors. The color samples are obtained by selecting doors which have acceptable color, and capturing those images into a computer readable format. These captured images may then be printed, stored, transmitted, etc.

US Patent:

44457731, May 1, 1984

Filed:

Sep 29, 1982

Appl. No.:

6/428265

Inventors:

William B. Birkett - Northville MI

International Classification:

G03B 2774
G01J 142

US Classification:

355 68

Abstract:

An exposure indicator for photographic plate makers including a comparator having a control input, an inverting input and an output; a light emitting diode having its anode connected to the control input for developing a reverse bias signal at said control input in response to illumination from the plate maker light source whereby an output comparator signal is generated when the control input signal exceeds a reference signal at the comparator's inverting input; the output signal forward biasing the light emitting diode to its light emitting state and also fed back to the control input to maintain the light emitting diode in such emitting state; and vacuum operated switch means to provide power to the indicator circuit in response to vacuum actuation of the plate maker flexible blanket.