US3555339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic pin restartable lamp
Assignee: United States Department of the Army
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Filing: 1969-01-07
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Granted: 1971-01-12
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Expires: 1989-01-07
Abstract
Abstract An arc lamp having a tubular envelope enclosing a first fixed electrode disposed at one end and a second electrode structure, having a movable tip, disposed at the other end of the tubular envelope. The second electrode structure includes a fixed hollow electrode portion secured to the tubular housing and a movable electrode portion slidably carried in the opening of the hollow electrode and provided with a tip portion for extending out of the hollow electrode. The movable electrode includes a core of magnetic material having a tip extending therefrom through an opening in the hollow electrode and in axial alignment with the first electrode. The core is in biased relation with the hollow electrode by means of a spring seated between the hollow electrode and core. An electromagnetic coil is circumferentially mounted about the core for movement of the movable electrode responsive to energization of the coil.
Inventors
- 👤 Teddy J Peacher
- 👤 Dorwin L Kilbourn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:34
CPC Classifications
H; H05; H05B; H05B31/00; H05B31/02; H05B31/30; H05B31/305; H01; H01J; H01J61/00; H01J61/98
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
183 words
An arc lamp structure comprising: a. a tubular envelope; b. a first electrode secured in sealing relation at a first end of said envelope; c. a second electrode secured in sealing relation at the second end of said envelope, said second electrode having a central opening therein; d. movable electrode means mounted in said opening of said second electrode and disposed for displacement from a first position of nonengagement to a second position of engagement with said first electrode, said moveable electrode means having an armature portion comprised of magnetic material carried in said central opening and a tip portion disposed for extending out of said second electrode for the engagement with said first electrode; e. electromagnetic means disposed around said tubular envelope adjacent said second end thereof, said electromagnetic means disposed for energization to effect the displacement of said movable electrode means from said first to said second position; and f. Biasing means for return of said moveable electrode means to said first position whereby an arc is created between said movable electrode means and said first electrode responsive to separation thereof,
Claim 2
Dependent Claim
183 words
An arc lamp structure comprising: a. a tubular envelope; b. a first electrode secured in sealing relation at a first end of said envelope; c. a second electrode secured in sealing relation at the second end of said envelope, said second electrode having a central opening therein; d. movable electrode means mounted in said opening of said second electrode and disposed for displacement from a first position of nonengagement to a second position of engagement with said first electrode, said moveable electrode means having an armature portion comprised of magnetic material carried in said central opening and a tip portion disposed for extending out of said second electrode for the engagement with said first electrode; e. electromagnetic means disposed around said tubular envelope adjacent said second end thereof, said electromagnetic means disposed for energization to effect the displacement of said movable electrode means from said first to said second position; and f. Biasing means for return of said moveable electrode means to said first position whereby an arc is created between said movable electrode means and said first electrode responsive to separation thereof,
Claim 3
Dependent Claim
70 words
The device as set forth in claim 1 wherein said second electrode is a hollow member having a first opening extending therethrough and a second larger opening rearwardly of said first opening and in communication therewith and forming a shoulder therebetween; said armature portion of said moveable electrode means being carried in said larger opening and said tip portion of said movable electrode means being carried in said first opening.
Claim 4
Dependent Claim
33 words
The device as set forth in claim 2 wherein said biasing means is a spring member seated between said armature portion and said shoulder for biased relation of said moveable electrode means therein.
References Cited (Backward Citations)
US2545345A
Cited
US3078383A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |