Patent US3205936A successfully refreshed from Google Patents.
US3205936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stacked-fin heat sink
Assignee: Astro Dynamics Inc
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Filing: 1963-06-20
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Granted: 1965-09-14
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Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 Katz Leonhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:44
CPC Classifications
H; H10; H10W; H10W90/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A HEAT RADIATOR HAVING IN COMBINATION, A BASE PORTION FOR CONTACTING HEAT-GENERATING ELEMENTS AND PROVIDED WITH AN INTEGRAL PERIPHERAL RING-SHAPED FIN FLANGE OF PREDETERMINED WIDTH, A PLURALITY OF PARALLEL VERTICALLY SPACED RING-SHAPED FIN FLANGES OF SUBSTANTIALLY THE SAID PREDETERMINED WIDTH AND A PLURALITY OF L-SHAPED SPACERS SPACED CIRCUMFERENTIALLY ALONG THE PERIPHERAL EXTENT OF SAID FLANGES AND DISPOSED THEREBETWEEN, WITH EACH L-SHAPED SPACER COMPRISING A FOOT SUBSTANTIALLY VERTICALLY DEPEND ING FROM THE INNER EDGE OF THE FIN AND TERMINATING IN A HORIZONTALLY OUTWARDLY EXTENDING FOOT OF LENGTH SUBSTANTIALLY EQUAL TO THE SAID PREDETERMINED WIDTH, THE HORIZONTALLY EXTENDING FOOT BEING SECURED IN ABUTTING RELATION ACROSS THE SAID PREDETERMINED WIDTH.
Claim 2
Dependent Claim
107 words
A HEAT RADIATOR HAVING IN COMBINATION, A BASE PORTION FOR CONTACTING HEAT-GENERATING ELEMENTS AND PROVIDED WITH AN INTEGRAL PERIPHERAL RING-SHAPED FIN FLANGE OF PREDETERMINED WIDTH, A PLURALITY OF PARALLEL VERTICALLY SPACED RING-SHAPED FIN FLANGES OF SUBSTANTIALLY THE SAID PREDETERMINED WIDTH AND A PLURALITY OF L-SHAPED SPACERS SPACED CIRCUMFERENTIALLY ALONG THE PERIPHERAL EXTENT OF SAID FLANGES AND DISPOSED THEREBETWEEN, WITH EACH L-SHAPED SPACER COMPRISING A FOOT SUBSTANTIALLY VERTICALLY DEPEND ING FROM THE INNER EDGE OF THE FIN AND TERMINATING IN A HORIZONTALLY OUTWARDLY EXTENDING FOOT OF LENGTH SUBSTANTIALLY EQUAL TO THE SAID PREDETERMINED WIDTH, THE HORIZONTALLY EXTENDING FOOT BEING SECURED IN ABUTTING RELATION ACROSS THE SAID PREDETERMINED WIDTH.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |