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Patent US3906273A successfully refreshed from Google Patents.
US3906273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two electrode spark gap apparatus
Assignee: Honeywell International Inc
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Filing: 1974-01-16
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Granted: 1975-09-16
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Expires: 1994-01-16
Abstract
Abstract A hermetically sealed spark gap discharge device of the type wherein the spacing between two electrodes can be set after the electrodes have been mounted within the enclosure. The spark gap apparatus can be completely assembled except for the hermetically sealing of the spark gap apparatus and the setting of the spacing between the two electrodes that establishes the arc discharge when a predetermined breakdown voltage is established across the electrodes.
Inventors
- 👤 Joseph M Kozlowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:39
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/10; F42B3/14; H; H01; H01T; H01T4/00; H01T4/10; H01T4/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
A spark gap apparatus comprising: a ceramic tube having a central axis; a first base mounted at one end of said tube; a second base comprised of glass mounted at the other end of said tube and forming with said first base and said tube an enclosure; a first electrode mounted to said first base and extending into said enclosure along said central axis, said first electrode having a free end portion that includes an arc discharge surface; a metal plate disposed inside of and transverse to the central axis of said tube, said metal plate being in contact with an annular portion of said second base and an annular portion of said tube; a sleeve mounted to and extending through said second base; and a second electrode mounted through said sleeve and said metal plate and extending into said enclosure along said central axis, said second electrode having a free end portion that includes an arc discharge surface which is spaced from and faces the arc discharge surface of said first electrode, said second electrode electrically isolated from said first electrode.
Claim 2
Dependent Claim
182 words
A spark gap apparatus comprising: a ceramic tube having a central axis; a first base mounted at one end of said tube; a second base comprised of glass mounted at the other end of said tube and forming with said first base and said tube an enclosure; a first electrode mounted to said first base and extending into said enclosure along said central axis, said first electrode having a free end portion that includes an arc discharge surface; a metal plate disposed inside of and transverse to the central axis of said tube, said metal plate being in contact with an annular portion of said second base and an annular portion of said tube; a sleeve mounted to and extending through said second base; and a second electrode mounted through said sleeve and said metal plate and extending into said enclosure along said central axis, said second electrode having a free end portion that includes an arc discharge surface which is spaced from and faces the arc discharge surface of said first electrode, said second electrode electrically isolated from said first electrode.
Claim 3
Dependent Claim
22 words
The spark gap apparatus recited in claim 1 including: means for hermetically sealing the enclosure formed by said bases and said tube.
Claim 4
Dependent Claim
54 words
The spark gap apparatus described in claim 1 wherein said first electrode has a passage therein along said central axis, one end of said first electrode passage terminating outside of said enclosure and an opening in another portion of said electrode that communicates with said first electrode passage and the inside of said enclosure.
Claim 5
Dependent Claim
15 words
The spark gap apparatus recited in claim 1 wherein said enclosure contains an ionizable atmosphere.
Claim 6
Dependent Claim
15 words
The spark gap apparatus recited in claim 3 wherein said enclosure contains an ionizable atmosphere.
Claim 7
Dependent Claim
14 words
The spark gap apparatus claimed in claim 1 wherein said ceramic material is alumina.
Claim 8
Dependent Claim
14 words
The spark gap apparatus claimed in claim 5 wherein said ceramic material is alumina.
Claim 9
Dependent Claim
54 words
The spark gap apparatus described in claim 2 wherein said first electrode has a passage therein along said central axis, one end of said first electrode passage terminating outside of said enclosure and an opening in another portion of said electrode that communicates with said first electrode passage and the inside of said enclosure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |