US3673470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing for transistors having unsoldered connections for operating at very high frequencies
Assignee: Alcatel CIT SA
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Filing: 1971-05-27
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Granted: 1972-06-27
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Expires: 1991-05-27
Abstract
Abstract The device enables a transistor to be removed from a circuit without its connections having to be unsoldered or soldered again, and comprises a middle part bearing the transistor, one of whose electrodes is connected to the ground of the middle part and two lateral flanges fitted with plug sockets for receiving the other two electrodes of the transistor. The middle part and the two flanges can be installed together by means of screws. The two flanges can also be installed without the middle, allowing the invention to be used for making measurements on power amplifiers at frequencies greater than 1 Gc/s.
Inventors
- 👤 Guy Louvel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:03
CPC Classifications
G; G01; G01R; G01R1/00; G01R1/02; G01R1/04; G01R1/0408; G01R1/0433; G01R1/0441; G01R1/045
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
168 words
In a casing for a transistor operating at very high frequencies including means for connecting a first electrode of the transistor to the central core of a coaxial tap, a second electrode of the transistor to the central core of another coaxial tap, and a third electrode of the transistor to the grounds of the coaxial taps connected to the ground of the said casing, the improvement wherein: said casing is composed of a central portion which supports said transistor and two end plates adapted to be connected together and which is enclosed therebetween, said two end plates being formed with an orifice, a coaxial tap whose central core appears on the inside face of the end plate received within said orifice and level with the said orifice, said core being split in the direction of its length on the inside so as to receive said first and second electrodes and means connecting said third electrode to the ground of the said central portion of the said casing.
Claim 2
Dependent Claim
168 words
In a casing for a transistor operating at very high frequencies including means for connecting a first electrode of the transistor to the central core of a coaxial tap, a second electrode of the transistor to the central core of another coaxial tap, and a third electrode of the transistor to the grounds of the coaxial taps connected to the ground of the said casing, the improvement wherein: said casing is composed of a central portion which supports said transistor and two end plates adapted to be connected together and which is enclosed therebetween, said two end plates being formed with an orifice, a coaxial tap whose central core appears on the inside face of the end plate received within said orifice and level with the said orifice, said core being split in the direction of its length on the inside so as to receive said first and second electrodes and means connecting said third electrode to the ground of the said central portion of the said casing.
Claim 3
Dependent Claim
50 words
The casing according to claim 1, including means allowing said two end plates to be connected together when the said central part is excluded, with said two split cores being level with the orifices then coming into contact so as to permit an electrical connection between the said two cores.
Claim 4
Dependent Claim
58 words
The casing according to claim 1, wherein: said means connecting said third electrode to said ground comprise a plurality of gripping means adapted to receive the arms of the said third electrode with said gripping means being secured to one of the walls of a U-shaped cavity within the said central part with said cavity containing said transistor.
References Cited (Backward Citations)
US3402361A
Cited
US3336535A
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US3609480A
Cited
US3484661A
Cited
US3521199A
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US3594657A
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US3503015A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |