William D Mcdowell

US Patent:

20050109767, May 26, 2005

Filed:

Nov 21, 2003

Appl. No.:

10/719327

Inventors:

Kenneth Fennewald - Maryland Heights MO, US
William McDowell - Aurora IL, US
Kevin Ptasienski - O'Fallon MO, US
Louis Steinhauser - St. Louis MO, US

International Classification:

H05B003/16

US Classification:

219543000

Abstract:

A heater system is provided that comprises a layered heater in communication with a two-wire controller, wherein a resistive layer of the layered heater is both a heater element and a temperature sensor. The two-wire controller thus determines temperature of the layered heater using the resistance of the resistive layer and controls heater temperature through a power source. Furthermore, a heater system using a layered heater in communication with a two-wire controller for a specific application of a hot runner nozzle in an injection molding system is provided by the present invention.

US Patent:

20070000914, Jan 4, 2007

Filed:

Sep 7, 2006

Appl. No.:

11/517434

Inventors:

Kenneth Fennewald - Maryland Heights MO, US
William McDowell - Aurora IL, US
Kevin Ptasienski - O'Fallon MO, US
Louis Steinhauser - St. Louis MO, US

Assignee:

WATLOW ELECTRIC MANUFACTURING COMPANY - ST. LOUIS MO

International Classification:

H05B 3/16

US Classification:

219543000

Abstract:

A hot runner nozzle heater system is provided with a layered heater in communication with a two-wire controller, wherein a resistive layer of the layered heater is both a heater element and a temperature sensor. The two-wire controller thus determines temperature of the layered heater using the resistance of the resistive layer and controls heater temperature through a power source.

US Patent:

20070138166, Jun 21, 2007

Filed:

Feb 13, 2007

Appl. No.:

11/705884

Inventors:

Kenneth Fennewald - Maryland Heights MO, US
William McDowell - Aurora IL, US
Kevin Ptasienski - O'Fallon MO, US
Louis Steinhauser - St. Louis MO, US

Assignee:

Watlow Electric Manufacturing Company - St. Louis MO

International Classification:

H05B 3/06
H05B 1/02

US Classification:

219542000, 219494000

Abstract:

A heater is provided that includes a resistive layer formed by a layered process (e.g., thick film, thin film, thermal spray, and sol-gel) and two electrical lead wires connected to the resistive layer. The resistive layer has sufficient temperature coefficient of resistance characteristics such that the resistive layer is a heater element and a sensor, and the resistive layer is in communication with a two-wire controller through the two electrical lead wires. Preferably, the sensor is a temperature sensor, and the heater includes additional layers formed by layered processes.

US Patent:

20210002004, Jan 7, 2021

Filed:

Jul 1, 2019

Appl. No.:

16/459081

Inventors:

- Chicago IL, US
William T. McDowell - Glen Carbon IL, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

B64F 5/60
B64F 5/10
G06F 17/50

Abstract:

An aircraft lifecycle in which digital data for an aircraft part is automatically collected, retained, and utilized to individualize aircraft inspection and maintenance is described. Several types of data, including non-destructive evaluation and measurement data and structural health monitoring data, are used in a feedback loop having various phases which may automatically receive data in digital format from other phases. In this manner the part being designed, fabricated, tested, and maintained for the aircraft is optimized and processes involved in the lifecycle of the part is made more efficient.

Author:

William L. McDowell

ISBN #:

0872499111