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David A Tjornhom

from Wayzata, MN
Age ~52

David Tjornhom Phones & Addresses

  • 2870 East Rd, Wayzata, MN 55391 (952) 513-8587
  • 16630 Meadowbrook Ln, Wayzata, MN 55391
  • Excelsior, MN
  • 4741 Drew Ave, Minneapolis, MN 55410
  • Carlisle, MA
  • Saint Paul, MN

Publications

Us Patents

Electrical Adapter

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US Patent:
40933334, Jun 6, 1978
Filed:
Dec 15, 1975
Appl. No.:
5/640937
Inventors:
David A. Tjornhom - Wayzata MN
International Classification:
H01R 1720
H01R 3106
US Classification:
339 78
Abstract:
An adapter for a conventional threaded electric light socket or the like having an external right hand threaded base for threading into a conventional socket. A locking tab on the base permits the adapter to be threaded into the socket and jams the threads of the socket to prevent its removal. The adapter has a cavity with an internal left hand thread for receiving an unconventional bulb or the like with a mating left hand threaded base. In one form, the adapter has a releasable lock structure for holding the adapter in the socket. A removal tool is used to release the lock structure to permit the adapter to be turned into and out of the socket.
David A Tjornhom from Wayzata, MN, age ~52 Get Report