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Miniature transistor enclosed in a glass disc-shaped housing

  • US 3,376,376 A
  • Filed: 06/16/1964
  • Issued: 04/02/1968
  • Est. Priority Date: 06/16/1964
  • Status: Expired due to Term
First Claim
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1. AN ELECTRONIC ACTIVE DEVICE AND HOUSING THEREFOR COMPRISING:

  • AN ACTIVE DEVICE HAVING AT LEAST TWO LEADS EXTENDING THEREFROM, A GLASS BEAD MOLDED ON ONE OF SAID LEADS AND HAVING AN AREA WHEN VIEWED FROM THE END OF THE LEAD ON WHICH IT IS MOLDED AT LEAST AS GREAT AS THE CORRESPONDINGLY VIEWED AREA OF ACTIVE DEVICE, AN ALL GLASS DISC SHAPED HOUSING INCLUDING MEANS DEFINING A BLIND BORE IN A CURVED EDGE OF THE DISC FOR ACCOMMODATING THE ACTIVE DEVICE WITH SLIGHT ROOM TO SPARE, THE AREA ACROSS THE ENTRANCE OF THE BLIND HOLE BEING SUBSTANTIALLY THE SAME SIZE AND SHAPE AS THE GLASS BEAD MOLDED TO THE LEAD, BUT HAVING DIMENSIONS SUBSTANTIALLY LESS THAN THE CORRESPONDING DIMENSIONS OF SAID DISC WHEN VIEWED IN A DIRECTION LOOKING INTO SAID BLIND HOLE, AT LEAST ONE OTHER SMALLER HOLE IN THE HOUSING EXTENDING TO THE BLIND HOLE FOR ACCOMMODATING THE OTHER LEAD ATTACHED TO THE ACTIVE DEVICE, AND SOLDER GLASS SEALS HERMETICALLY SEALING THE ACTIVE DEVICE WITHIN THE HOUSING BY SEALING AROUND THE GLASS BEAD WHERE IT IS RECEIVED IN THE BLIND BORE AND AROUND THE LEAD WHERE IS PASSES AND THE OTHER AND SMALLER HOLE IN THE HOUSING.

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