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Edwina Kathleen Dulen

from Franklin Park, IL
Age ~78

Edwina Dulen Phones & Addresses

  • 3521 Louis St, Franklin Park, IL 60131
  • 2225 Bellwort Dr, Rockford, IL 61108
  • Windham, NH

Publications

Us Patents

Membrane Switch Having A Puff Ink Spacer

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US Patent:
43249620, Apr 13, 1982
Filed:
Oct 14, 1980
Appl. No.:
6/196446
Inventors:
Edwina K. Dulen - Fox Lake IL
Assignee:
Oak Industries Inc. - Rancho Bernardo CA
International Classification:
H01H 312
US Classification:
200159B
Abstract:
A membrane switch of the type having a substrate and a flexible membrane. Both the substrate and membrane have a set of electrical conductors formed thereon. The conductors are in facing relation and are separated by a spacer. The spacer has openings in line with switch sites of the conductors to allow electrical contact in response to pressure on the flexible membrane. The spacer is formed of puff ink.
Edwina Kathleen Dulen from Franklin Park, IL, age ~78 Get Report