Monte R Washburn

US Patent:

7659732, Feb 9, 2010

Filed:

Jun 15, 2007

Appl. No.:

11/818632

Inventors:

Monte Washburn - Stanwood WA, US

Assignee:

Fluke Corporation - Everett WA

International Classification:

G01R 27/08
G01R 31/08

US Classification:

324715, 324525, 324691

Abstract:

A four-wire ohmmeter connector includes a pair of elongated members spaced apart from each other by an interconnecting web. A pair of elongated contacts are mounted on forwardly projecting portions of each of the elongated members. An insulative housing surrounds the elongated members, contacts and web. The contacts mounted on one of the elongated members are connected through separate wires to a positive probe, and the contacts mounted on the other of the elongated members are connected through separate wires to a negative probe. The elongated members are inserted into respective terminal apertures of a four-wire ohmmeter. A pair of semi-cylindrical conductive sleeves are aligned with each of the apertures, and they make contact with and compress the respective contacts that are inserted into the aperture.

US Patent:

8232814, Jul 31, 2012

Filed:

Jan 4, 2010

Appl. No.:

12/651940

Inventors:

Monte Washburn - Stanwood WA, US

Assignee:

Fluke Corporation - Everett WA

International Classification:

G01R 27/08
G01R 31/20

US Classification:

324715, 32475403

Abstract:

A four-wire ohmmeter connector includes a pair of elongated members spaced apart from each other by an interconnecting web. A pair of elongated contacts are mounted on forwardly projecting portions of each of the elongated members. An insulative housing surrounds the elongated members, contacts and web. The contacts mounted on one of the elongated members are connected through separate wires to a positive probe, and the contacts mounted on the other of the elongated members are connected through separate wires to a negative probe. The elongated members are inserted into respective terminal apertures of a four-wire ohmmeter. A pair of semi-cylindrical conductive sleeves are aligned with each of the apertures, and they make contact with and compress the respective contacts that are inserted into the aperture.

US Patent:

D3636810, Oct 31, 1995

Filed:

Mar 1, 1994

Appl. No.:

D/019372

Inventors:

Carl J. Ledbetter - Lynnwood WA
Monte R. Washburn - Bothell WA
Mark E. Lockman - Everett WA
Dennis Lamb - Stanwood WA

Assignee:

Fluke Corporation - Everett WA

US Classification:

D10 78

US Patent:

D4270908, Jun 27, 2000

Filed:

Sep 14, 1999

Appl. No.:

D/110816

Inventors:

Monte R. Washburn - Bothell WA
Edmond C. Eng - Kirkland WA
Christopher W. Lagerberg - Seattle WA

Assignee:

Fluke Corporation - Everett WA

International Classification:

1004

US Classification:

D10 78

US Patent:

54924820, Feb 20, 1996

Filed:

Jun 7, 1994

Appl. No.:

8/255133

Inventors:

Mark E. Lockman - Everett WA
Monte R. Washburn - Bothell WA
Howard T. Voorheis - Everett WA
Warren H. Wong - Seattle WA

Assignee:

Fluke Corporation - Everett WA

International Classification:

H01L 3510

US Classification:

439329

Abstract:

A compact isothermal connector for a thermocouple temperature measurement system has electrical contacts with thermal mass sufficiently larger than the thermal mass of the corresponding contacts of a corresponding thermocouple connector to provide for improved settling times and measurement accuracy. The contacts are thermally coupled to a multi-layer printed circuit board containing layers of embedded thermally conducting material to achieve sufficient thermal coupling between the contacts. The contacts have sufficient thermal mass to achieve a desired settling time. A temperature sensor is thermally coupled to the printed circuit board and to each electrical contact to sense the temperature of the isothermal connector and provide the temperature information to a temperature measuring instrument to correct for measurement errors from the connector junction voltage.

US Patent:

62937006, Sep 25, 2001

Filed:

Sep 24, 1999

Appl. No.:

9/404921

Inventors:

John M. Lund - Marysville WA
Jonathan J. Parle - Seattle WA
Monte R. Washburn - Bothell WA

Assignee:

Fluke Corporation - Everett WA

International Classification:

G01K 702
G01K 712

US Classification:

374181

Abstract:

A calibrated isothermal assembly for a thermocouple thermometer is provided to obviate a calibration step after manufacture of the instrument. A compact isothermal block is fabricated on a specialized printed circuit board which includes a thick metal plate to establish sufficient thermal mass and good heat conductivity. A temperature sensor is mounted at the thermocouple reference junction on the printed circuit board to track the reference junction temperature. The calibrated isothermal assembly also includes a current source for the temperature sensor, and a memory device containing stored calibration data specific to the temperature sensor.

US Patent:

D3606775, Jul 25, 1995

Filed:

Mar 1, 1994

Appl. No.:

D/019371

Inventors:

Carl J. Ledbetter - Lynnwood WA
Monte R. Washburn - Bothell WA
Steven W. Fisher - Edmonds WA
Edmond C. Eng - Kirkland WA

Assignee:

Fluke Corporation - Everett WA

US Classification:

D23235

US Patent:

55787940, Nov 26, 1996

Filed:

Jan 5, 1995

Appl. No.:

8/369203

Inventors:

Dennis Lamb - Stanwood WA
Monte R. Washburn - Bothell WA
Mark Lockman - Everett WA

Assignee:

Fluke Corporation - Everett WA

International Classification:

H05K 500
E05C 1910

US Classification:

174 521

Abstract:

A cover assembly for restraining an object in an enclosure has a cover frame defining an opening at an open end of the enclosure, a cover to cover the opening, a restraining mechanism securing the cover to the cover frame to restrict movement of the cover relative to the cover frame when the cover is in a closed position and thereby restrain the object in the enclosure, and a latch to secure the cover to the cover frame to also restrict movement of the cover relative to the cover frame when the cover is in a closed position. A method for restraining the object in the enclosure includes securing the cover to the cover frame to cover the opening, securing the cover to the cover frame to restrict movement of the cover relative to the cover frame, and unsecuring the cover from the cover frame with a force having a first component force which unsecures the cover from the cover frame and a second component force which moves the cover relative to the cover frame.