US3261904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor mounting and heat transfer apparatus with adjustable pressure detachable mounting means
Assignee: RTX Corp
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Filing: 1963-09-16
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Granted: 1966-07-19
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Stanley S Wulc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:29
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/60; H10W40/611; H10W40/20; H10W40/231; H10W40/235; H10W40/237
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A DETACHABLE HEAT CONDUCTING MOUNTING FOR FASTENING A TRANSISTOR HOUSING ON A HEAT SINK COMPRISING: A SUPPORT OF HIGH THERMAL CONDUCTIVITY THAT IS RIGIDLY MOUNTED WITH RESPECT TO THE HEAT SINK AND HAVING A PORTION SPACED THEREFROM, A HEAT CONDUCTING MEMBER HAVING A LOW ELECTRICAL CONDUCTIVITY DISPOSED BETWEEN THE TRANSISTOR HOUSING AND ONE OF THE HEAT SINK AND SPACED PORTION OF SAID SUPPORT, AND ADJUSTABLE MEANS FOR EXERTING A VARIABLE PRESSURE BETWEEN SAID HOUSING AND THE OTHER ONE OF SAID HEAT SINK AND SPACED PORTION OF SAID SUPPORT TO VARIABLY INCREASE THE SURFACE CONTACT PRESSURE AND THERMAL CONDUCTIVITY BETWEEN THE HEAT CONDUCTING MEMBER AND THE HOUSING.
Claim 2
Dependent Claim
106 words
A DETACHABLE HEAT CONDUCTING MOUNTING FOR FASTENING A TRANSISTOR HOUSING ON A HEAT SINK COMPRISING: A SUPPORT OF HIGH THERMAL CONDUCTIVITY THAT IS RIGIDLY MOUNTED WITH RESPECT TO THE HEAT SINK AND HAVING A PORTION SPACED THEREFROM, A HEAT CONDUCTING MEMBER HAVING A LOW ELECTRICAL CONDUCTIVITY DISPOSED BETWEEN THE TRANSISTOR HOUSING AND ONE OF THE HEAT SINK AND SPACED PORTION OF SAID SUPPORT, AND ADJUSTABLE MEANS FOR EXERTING A VARIABLE PRESSURE BETWEEN SAID HOUSING AND THE OTHER ONE OF SAID HEAT SINK AND SPACED PORTION OF SAID SUPPORT TO VARIABLY INCREASE THE SURFACE CONTACT PRESSURE AND THERMAL CONDUCTIVITY BETWEEN THE HEAT CONDUCTING MEMBER AND THE HOUSING.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |