David Lawrence Dummer
Engineers at Spg Harvest Ln, Fort Collins, CO

License number
Colorado 31268
Issued Date
Jul 17, 1996
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
2915 Spring Harvest Ln, Fort Collins, CO 80528
LicenseFiles verified this license of Dec 9, 2016 at the Colorado - Department of Regulatory Agencies.

Professional information

David Dummer Photo 1

Adapter Method And Apparatus For Interfacing A Tester With A Device Under Test

US Patent:
6828773, Dec 7, 2004
Filed:
Mar 21, 2002
Appl. No.:
10/103392
Inventors:
Jonathan Ernest Buczkowski - Aurora CO
David Lawrence Dummer - Fort Collins CO
Julie L Stahmer - Fort Collins CO
Brent W Thordarson - Ft Collins CO
Assignee:
Agilent Technologies, Inc. - Palo Alto CA
International Classification:
G01R 3126
US Classification:
3241581, 324765
Abstract:
A fixture assembly is presented. The fixture assembly includes a device assembly for mating with a device under test and a tester interface assembly for mating with the device assembly on one side and a tester on a second side. In the method and apparatus of the present invention, the device assembly includes a probe field specific to a device under test and may be changed to accommodate a different device, without changing the tester interface assembly. The tester interface assembly includes a frame used for alignment and structural support. The frame interfaces with a probe plate on one side and a load plate on the other side. The probe plate holds a plurality of probes in place while the load plate provides a plurality of holes for the probes to extend downward through the load plate. A printed circuit board (PCB) is positioned below the load plate and makes contact with the ends of the probes. The entire tester interface assembly is positioned on top of an electronic tester and maps points of contact in the tester with the probe field of the device assembly.

Engineers licenses in Colorado