Michael P Atwell

US Patent:

6784987, Aug 31, 2004

Filed:

Jan 21, 2002

Appl. No.:

10/054012

Inventors:

Michael Paul Minneman - Broomfield CO
Michael Paul Atwell - Broadview Heights OH
Elwood James Egerton - Longmont CO

Assignee:

DBM Optics, Incorporated - Lafeyette CO

International Classification:

G01J 144

US Classification:

356226, 356229, 250214 A

Abstract:

A range selection circuit ( ), including a logarithmic amplifier ( ) and output circuitry ( ) associated therewith, is configured to directly drive linear ranging circuitry for measurement circuitry ( ) in an optical power meter ( ) to measure signals that vary over a wide range of, for example, from about -7 dB to about -45 dB. This allows the optical power meter to change ranges as fast as one (1) times the hardware settling time. The range selection circuitry is in parallel with the measurement circuitry, which allows ranging to happen in real time.

US Patent:

7062168, Jun 13, 2006

Filed:

Mar 19, 2002

Appl. No.:

10/102025

Inventors:

Michael Paul Atwell - Broadview Heights OH, US
Michael Paul Minneman - Broomfield CO, US
Elwood James Egerton - Longmont CO, US

Assignee:

DBM Optics, Incorporated - Lafayette CO

International Classification:

H04B 10/08

US Classification:

398 38, 398 33, 398202, 398208, 398214, 356226, 356229, 250214 A, 324115, 330129, 341139

Abstract:

Multiple stage ranging circuitry for a measuring circuit includes a first ranging circuit that selectively amplifies an input signal by respective amounts according to the magnitude of the input signal thereto, and a second ranging circuit coupled to the output of the first ranging circuit selectively amplifies the output signal from the first ranging circuit by a respective amount according to the magnitude of that output signal to provide a measured output. The multiple stage ranging circuitry increases dynamic range and provides for high speed measurements over that dynamic range. A method of ranging for high speed signal measurements over a wide dynamic range includes directing an input signal to a first ranging stage that responds at one speed to set ranging over a relatively wide variation in input signal magnitudes, and directing the output signal from the first ranging stage to a second ranging stage responsive at a second speed faster than the one speed to set ranging over a relatively narrower range of signal magnitudes to provide for signal measurement.

US Patent:

53861884, Jan 31, 1995

Filed:

Jan 15, 1993

Appl. No.:

8/005227

Inventors:

Michael Minneman - Hudson OH
Kenneth A. Reindel - Broadview Heights OH
John G. Banaska - Brunswick OH
Gary K. Bish - Cleveland OH
Andy J. Creque - Macedonia OH
Michael Atwell - Broadview Heights OH

Assignee:

Keithley Instruments, Inc. - Cleveland OH

International Classification:

G01R 1900

US Classification:

324126

Abstract:

A current in a circuit is measured without breaking the circuit. A relatively low resistance element in the circuit such as a component lead is chosen. A current is forced through the element and the voltage drop measured. Another current is forced through the element and the voltage drop measured. The values of these currents and voltages are used to determine the original current in the circuit.

US Patent:

D3579441, May 2, 1995

Filed:

Apr 13, 1994

Appl. No.:

D/021249

Inventors:

Michael J. Atwell - Medina OH
Thomas J. O'Donnell - Westlake OH

Assignee:

Ohio Mattress Company Licensing & Component Group - Cleveland OH

US Classification:

D20 10

US Patent:

54994071, Mar 19, 1996

Filed:

Apr 13, 1994

Appl. No.:

8/227066

Inventors:

Michael J. Atwell - Medina OH
Thomas J. O'Donnell - Westlake OH

Assignee:

Ohio Mattress Company Licensing and Components Group - Cleveland OH

International Classification:

C09F 1900

US Classification:

5 1

Abstract:

A display device for illustrating the internal construction of a conventional bedding system displayed on the sales floor of a store is adapted to be superposed on a corner of the displayed bedding system. The novel display device comprises three generally-planar members, one planar member corresponding with the horizontally-disposed body-receiving surface of the mattress and the other two generally-planar members corresponding to the two side surfaces of the bedding system forming the corner on which the display device is superposed. On each of the three generally-planar members of the device is a different picture, each picture portraying the likeness of the individual components of the innerspring assembly of the mattress on which the display device is superposed in such a way that these likeness simulate in two dimensions the structures and arrangement of the corresponding components in the innerspring assembly of the mattress. The overall effect, then, is to provide a visual representation of the internal structure of the bedding system on which the invention display device is superposed in substantial registration with the corresponding components in the actual mattress and foundation displayed.