Patent US4953004A successfully refreshed from Google Patents.
US4953004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Housing for a gate turn-off power thyristor (GTO)
Assignee: BBC Brown Boveri AG Switzerland
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Filing: 1988-12-14
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Granted: 1990-08-28
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Expires: 2008-12-14
Abstract
Abstract In a metal-ceramic housing for a high-power GTO, a space-saving auxiliary cathode connection (5a) capable of carrying current is achieved in that it is constructed by embedding in the insulating ring (4) of the housing and is connected directly to the cathode contact plate (9) via its own connecting elements (11, 13, 15).
Inventors
- 👤 Peter Almenrader
- 👤 Jiri Dlouhy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:34
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
136 words
A housing for a gate turn-off power thyristor (GTO), comprising: (a) an anode contact plate; (b) a cathode contact plate, a mounting space being provided between the two plates for the active semiconductor component; (c) an insulating ring surrounding the mounting space; (d) an anode flange which joins the insulating ring on the anode side to the anode contact plate; (e) a cathode flange which joins the insulating ring on the cathode side to the cathode contact plate; and (f) an auxiliary cathode connection which is connected to the cathode contact plate; (g) the auxiliary cathode connection comprising a bulk conductor which passes out of the housing through the insulating ring to the outside; and (h) said bulk conductor extending from the insulating ring through the mounting space and directly connected to the cathode contact plate.
Claim 2
Dependent Claim
136 words
A housing for a gate turn-off power thyristor (GTO), comprising: (a) an anode contact plate; (b) a cathode contact plate, a mounting space being provided between the two plates for the active semiconductor component; (c) an insulating ring surrounding the mounting space; (d) an anode flange which joins the insulating ring on the anode side to the anode contact plate; (e) a cathode flange which joins the insulating ring on the cathode side to the cathode contact plate; and (f) an auxiliary cathode connection which is connected to the cathode contact plate; (g) the auxiliary cathode connection comprising a bulk conductor which passes out of the housing through the insulating ring to the outside; and (h) said bulk conductor extending from the insulating ring through the mounting space and directly connected to the cathode contact plate.
Claim 3
Dependent Claim
154 words
A housing for a gate turn-off power thyristor (GTO), comprising: (a) an anode contact plate; (b) a cathode contact plate, a mounting space being provided between the two plates for the active semiconductor component; (c) an insulating ring surrounding the mounting space; (d) an anode flange which joins the insulating ring on the anode side to the anode contact plate; (e) a cathode flange which joins the insulating ring on the cathode side to the cathode contact plate; and (f) an auxiliary cathode connection which is connected to the cathode contact plate; (g) the auxiliary cathode connection comprising a bulk conductor which passes out of the housing through the insulating ring to the outside; and (h) said bulk conductor extending from the insulating ring through the mounting space and directly connected to the cathode contact plate; wherein the bulk conductor comprises an internal pin, an external pin, and a connecting piece situated in between.
Claim 4
Dependent Claim
154 words
A housing for a gate turn-off power thyristor (GTO), comprising: (a) an anode contact plate; (b) a cathode contact plate, a mounting space being provided between the two plates for the active semiconductor component; (c) an insulating ring surrounding the mounting space; (d) an anode flange which joins the insulating ring on the anode side to the anode contact plate; (e) a cathode flange which joins the insulating ring on the cathode side to the cathode contact plate; and (f) an auxiliary cathode connection which is connected to the cathode contact plate; (g) the auxiliary cathode connection comprising a bulk conductor which passes out of the housing through the insulating ring to the outside; and (h) said bulk conductor extending from the insulating ring through the mounting space and directly connected to the cathode contact plate; wherein the bulk conductor comprises an internal pin, an external pin, and a connecting piece situated in between.
Claim 5
Dependent Claim
15 words
The housing as claimed in claim 2, wherein the connecting piece has a compensation loop.
Claim 6
Dependent Claim
23 words
The housing as claimed in claim 3, wherein the internal pin is brazed into a blind hole let into the cathode contact plate.
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) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |