Patent US3869702A successfully refreshed from Google Patents.
US3869702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stud mount for light emissive semiconductor devices
Assignee: International Standard Electric Corp
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Filing: 1973-10-10
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Granted: 1975-03-04
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Expires: 1993-10-10
Abstract
Abstract This invention relates to a stud mount for light emissive semiconductor devices such as GaAs lasers. A copper block serving as one terminal connection for the semiconductor device is secured to one face of a steel stud. From the second face of the steel stud extends a hollow stem through which a wire, serving as the second connection for the semiconductor device, passes. The copper heat sink provides better dissipation and is shaped to allow the laser to lie on the axis of the mount.
Inventors
- 👤 Geoffrey Howard Backhouse
- 👤 Norman Derek Leggett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:04
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/02; H01S5/024; H01S5/02476; H01S5/022; H01S5/02208; H01S5/0235; H01S5/02355
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
A LIGHT EMISSIVE SEMICONDUCTOR DEVICE MOUNT COMPRISING: A STEEL STUD HAVING A HOLE THEREIN; A HOLLOW STEM PROTRUDING FROM THE OPPOSITE FACE OF SAID STUD; A WIRE PASSING THROUGH SAID HOLLOW STEM AND SAID HOLE PROVIDING THE OTHER CONNECTION FOR SAID SEMICONDUCTOR DEVICE; MEANS FOR ELECTRICALLY INSULATING SAID WIRE IN SAID HOLLOW STEM; AND A SUBSTANTIALLY SEMI-CYLINDRICAL COPPER BLOCK SECURED TO ONE FACE OF SAID STUD AND HAVING A RECESS THEREIN SPACING IT AWAY FROM THE END OF SAID WIRE, WHEREIN SAID SEMICONDUCTOR DEVICE IS SECURED TO SAID COPPER BLOCK AND LIES ON THE COMMON AXIS OF SAID STUD AND SAID HOLLOW STEM, SAID BLOCK PROVIDING ONE TEROINAL CONNECTION FOR SAID SEMICONDUCTOR DEVICE.
Claim 2
Dependent Claim
113 words
A LIGHT EMISSIVE SEMICONDUCTOR DEVICE MOUNT COMPRISING: A STEEL STUD HAVING A HOLE THEREIN; A HOLLOW STEM PROTRUDING FROM THE OPPOSITE FACE OF SAID STUD; A WIRE PASSING THROUGH SAID HOLLOW STEM AND SAID HOLE PROVIDING THE OTHER CONNECTION FOR SAID SEMICONDUCTOR DEVICE; MEANS FOR ELECTRICALLY INSULATING SAID WIRE IN SAID HOLLOW STEM; AND A SUBSTANTIALLY SEMI-CYLINDRICAL COPPER BLOCK SECURED TO ONE FACE OF SAID STUD AND HAVING A RECESS THEREIN SPACING IT AWAY FROM THE END OF SAID WIRE, WHEREIN SAID SEMICONDUCTOR DEVICE IS SECURED TO SAID COPPER BLOCK AND LIES ON THE COMMON AXIS OF SAID STUD AND SAID HOLLOW STEM, SAID BLOCK PROVIDING ONE TEROINAL CONNECTION FOR SAID SEMICONDUCTOR DEVICE.
Claim 3
Dependent Claim
17 words
A light emissive semiconductor device mount according to claim 1 wherein said means is a glass seal.
Claim 4
Dependent Claim
27 words
A light emissive semiconductor device mount according to claim 1 wherein said semiconductor device is electrically connected to said wire by at least one aluminum wire strap.
Claim 5
Dependent Claim
33 words
A light emissive semiconductor device mount according to claim 1 further including a cap with a transparent window is secured to said stud to form a hermetically sealed enclosure for said semiconductor device.
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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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |