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US3564682A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making a spark gap

Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1967-12-07
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Granted: 1971-02-23
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Expires: 1987-12-07
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Abstract

Abstract AN ELECTRICAL SPARK GAP COMPONENT COMPRISING A CYLINDRICAL BODY OF AN ELECTRICAL INSULATING PLASTIC HAS A TRANSVERSELY EXTENDING RECESS IN THE CYLINDRICAL SURFACE THEREOF. A PAIR OF WIRES OF AN ELECTRICALLY CONDUCTIVE METAL ARE EMBEDDED IN THE BODY AND EXTEND SUBSTANTIALLY LONGITUDINALLY ALONG THE BODY. ONE END OF EACH OF THE WIRES PROJECTS FROM A SIDE OF THE RECESS IN SPACED RELATION FROM THE PARTIALLY ACROSS THE RECESS IN SPACED RELATION FROM THE SURFACE OF THE RECESS. SUCH ENDS OF THE WIRES PROJECT FROM OPPOSITE SIDES OF THE RECESS AND ARE ARRANGED IN CLOSELY SPACED RELATION TO PROVIDE A GAP THEREBETWEEN. THE OTHER ENDS OF THE WIRES PROJECT FROM THE ENDS OF THE BODY. THE SPARK GAP IS MADE BY MOLDING A CYLINDRICAL PLASTIC BODY AROUND THE MID-PORTION OF A WIRE WITH THE ENDS THE WIRE PROJECTING FROM THE ENDS OF THE PLASTIC BODY. A SLIT IS CUT TRANSVERSELY ACROSS THE PLASTIC BODY WITH THE SLIT BEING DEEP ENOUGH TO ALSO CUT THROUGH THE WIRE. THE PLASTIC AT EACH SIDE OF THE SLIT IS REMOVED FROM AROUND THE CUT ENDS OF THE WIRE TO FORM A RECESS AND EXPOSE THE END PORTIONS OF THE CUT WIRE.

Inventors

  • 👤 Joseph J Carroll Jr
  • 👤 Ferdinand A Rocchi

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 08:25
CPC Classifications
H; H01; H01T; H01T4/00; H01T4/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49799; Y10T29/4981; Y10T29/4998; Y10T29/49982; Y10T29/49984

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-02-22 1974-08-24 1975-02-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-02-22 1978-08-24 1979-02-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-02-22 1982-08-24 1983-02-23 $7700.00 Window Closed / Lapsed

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