William Curtis Mcdowell

Author:

William L. McDowell

ISBN #:

0872499111

US Patent:

20070086759, Apr 19, 2007

Filed:

Oct 17, 2005

Appl. No.:

11/252198

Inventors:

Elias Russegger - Golling, AT
Gerhard Schefbanker - Golling, AT
Gernot Antosch - Hallein, AT
Wolfgang Poschl - Abtenau, AT
Christopher Lanham - O'Fallon MO, US
James McMillin - Algonquin IL, US
William McDowell - Aurora IL, US
Kenneth Fennewald - Maryland Heights MO, US
Allen Boldt - Kirkwood MO, US
Frederic Zimmermann - Karlsruhe, DE
Reinhardt Lehnert - Ubstadt-Weiher, DE
Kevin Ptasienski - O'Fallon MO, US

International Classification:

F24H 1/10
B05B 1/24
B05B 7/22
B67D 5/62

US Classification:

392473000

Abstract:

A hot runner nozzle heater is provided that includes a sleeve defining a slot extending along a length of the sleeve. A first dielectric layer is disposed over an outer surface of the sleeve, and a resistive element layer is disposed over the first dielectric layer, wherein the resistive element layer defines a resistive circuit pattern that is preferably formed by a laser trimming process. A pair of terminal leads are secured to a portion of the resistive element layer thus defining a termination area, and the termination area is positioned proximate the slot and away from the proximal end and the distal end of the sleeve. A second dielectric layer is disposed over the resistive element layer but not over the termination area, a third dielectric layer is disposed over the termination area, and a protective layer disposed over the second dielectric layer and the third dielectric layer.

US Patent:

20080138053, Jun 12, 2008

Filed:

Sep 5, 2007

Appl. No.:

11/850447

Inventors:

ELIAS RUSSEGGER - Golling, AT
Gerhard Schefbanker - Golling, AT
Gernot Antosch - Hallein, AT
Wolfgang Poschl - Abtenau, AT
Christopher C. Lanham - O'Fallon MO, US
James McMillin - Algonquin IL, US
William A. McDowell - Aurora IL, US
Kenneth F. Fennewald - Maryland Heights MO, US
Allen Boldt - Kirkwood MO, US
Frederic Zimmermann - Karlsruhe, DE
Reinhardt Lehnert - Ubstadt-Weiher, DE
Kevin Ptasienski - O'Fallon MO, US

Assignee:

Watlow Electric Manufacturing Company - St. Louis MO

International Classification:

B05B 1/24

US Classification:

392473

Abstract:

An instrumented heater sleeve is provided that has a plurality of zones, a dielectric layer disposed over an outer surface of the sleeve, a resistive element layer disposed over the first dielectric layer, and a plurality of pairs of lead wires secured to a portion of the resistive element layer. Each pair of lead wires is connected to and corresponds with each of the zones and a protective layer is disposed over the dielectric layer. An amount of power is supplied to each of the zones and adjusted during a test run, or multiple test runs, to achieve a desired temperature profile along a heating target such as a hot runner nozzle. Methods of designing a hot runner nozzle heater using the instrumented heater sleeve are also provided.

US Patent:

42773083, Jul 7, 1981

Filed:

Jun 23, 1978

Appl. No.:

5/918259

Inventors:

Gordon K. Rusch - Downers Grove IL
Donald J. Keefe - Lemont IL
William P. McDowell - Downers Grove IL

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G21C 1700
G01T 300

US Classification:

176 19EC

Abstract:

There is provided a nuclear reactor count-factor-increase time monitoring circuit which includes a pulse-type neutron detector, and means for counting the number of detected pulses during specific time periods. Counts are compared and the comparison is utilized to develop a reactor scram signal, if necessary.

US Patent:

39420140, Mar 2, 1976

Filed:

Mar 20, 1975

Appl. No.:

5/560429

Inventors:

William P. McDowell - Downers Grove IL
James P. Bobis - Downers Grove IL

Assignee:

The United States of America as represented by the United States Energy
Research and Development Administration - Washington DC

International Classification:

G01T 300
G01T 118

US Classification:

250392

Abstract:

Logic elements are provided for a reactor period meter trip circuit. For one element, first and second inputs are applied to first and second chopper comparators, respectively. The output of each comparator is O if the input applied to it is greater than or equal to a trip level associated with each input and each output is a square wave of frequency f if the input applied to it is less than the associated trip level. The outputs of the comparators are algebraically summed and applied to a bandpass filter tuned to f. For another element, the output of each comparator is applied to a bandpass filter which is tuned to f to give a sine wave of frequency f. The outputs of the filters are multiplied by an analog multiplier whose output is 0 if either input is 0 and a sine wave of frequency 2f if both inputs are a frequency f.

US Patent:

41444540, Mar 13, 1979

Filed:

Jan 27, 1977

Appl. No.:

5/763164

Inventors:

Edward F. Groh - Naperville IL
William McDowell - Downers Grove IL
Norbert S. Modjeski - Oak Lawn IL
Donald J. Keefe - Lemont IL
Peter Groer - TN

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G01N 2130
B65H 2504
B65H 2532

US Classification:

250435

Abstract:

A device is provided for transporting, in a stepwise manner, tape between a feed reel and takeup reel. An indexer moves across the normal path of the tape displacing it while the tape on the takeup reel side of the indexer is braked. After displacement, the takeup reel takes up the displaced tape while the tape on the feed reel side of the indexer is braked, providing stepwise tape transport in precise intervals determined by the amount of displacement caused by the indexer.

US Patent:

20200092951, Mar 19, 2020

Filed:

Nov 25, 2019

Appl. No.:

16/694252

Inventors:

- St. Louis MO, US
William A. MCDOWELL - Aurora IL, US
Kevin PTASIENSKI - O'Fallon MO, US
Louis P. STEINHAUSER - St. Louis MO, US

Assignee:

Watlow Electric Manufacturing Company - St. Louis MO

International Classification:

H05B 1/02
H05B 3/28
H05B 3/46
H05B 3/26
B29C 45/27
H05B 3/42

Abstract:

A heater system includes a substrate, a layered heater having a resistive layer formed on the substrate by a layered process, the resistive layer having sufficient temperature coefficient of resistance characteristics such that the resistive layer is a heater element and a temperature sensor. A single set of electrical leads having two electrical lead wires provides power to the resistive layer and receives a signal indicative of a temperature of the resistive layer. A two-wire controller includes a power controller, and the two-wire controller is configured to receive the signal indicative of the temperature of the resistive layer, determine the temperature of the resistive layer, and control temperature of the heater system.