US3767947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Miniaturized electric source
Assignee: Biviator AG
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Filing: 1970-05-05
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Granted: 1973-10-23
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Expires: 1990-05-05
Abstract
Abstract A miniaturized electric source having a radioactive source of Beta -radiation and a collector for said radiation, said source and said collector forming the terminals of the electric source, said source comprising a metal disc having coated thereon a tritium compound in solid state and a layer of a solid - state dielectric being disposed between said source and collector.
Inventors
- 👤 K Adler
- 👤 G Ducommun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:28
CPC Classifications
G; G04; G04C; G04C10/00; G04C10/02; G21; G21G; G21G4/00; G21G4/04; G21H; G21H1/00; G21H1/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
A source according to claim 1, wherein said di-electric is a plastic foil of a thickness in the order of 0.2 Mu .
Claim 2
Dependent Claim
26 words
A source according to claim 1, wherein said source comprises a compound of tritium with one element of the group consisting of lithium, zirconium and yttrium.
Claim 3
Dependent Claim
21 words
A source according to claim 1, wherein said compound is applied to said metal disc in an amount of 200 mC/cm2.
Claim 4
Dependent Claim
26 words
A source according to claim 1, wherein said tritium compound is applied to opposite surfaces of said metal disc at a density of about 400 mC/cm2.
Claim 5
Dependent Claim
25 words
A source according to claim 1, wherein said source is enclosed in two plastic foils flanged down each over the rim of said metal disc.
Claim 6
Dependent Claim
24 words
A source according to claim 1 wherein said collector is a metal capsule enclosing said source and plastic foil and contacting said plastic foil.
Claim 7
Dependent Claim
36 words
A source according to claim 7 wherein said collector has a hole for passage of said terminal, the space between said terminal and collector being sealed and insulated by means of a bead of plastic material.
Claim 8
Dependent Claim
29 words
A source according to claim 1, wherein the collector surface facing said source has a coating of an absorption medium preventing reflection of electrons back toward the radioactive source.
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |