US4420869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a thyrister housing
Assignee: INTERCERAM Inc FORTUNE ROAD WEST CITY OF MIDDLETOWN NY A NY CORP
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Filing: 1983-03-21
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Granted: 1983-12-20
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Expires: 2003-03-21
Abstract
Abstract A thyristor housing and method of its manufacture in which a gate tube passing through a radially directed bore in a tubular insulator is hermetically sealed by metal closures at each end to prevent accumulation of contaminants inside the gate tube during final plating the metal parts secured to said housing. The metal closure on the inwardly directed end of the gate tube is frangible for receiving a lead from the thyristor to be packaged in the housing.
Inventors
- 👤 Gunduz Erkan
- 👤 George Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:37
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138; H10W95/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
135 words
The method of manufacture of a thyristor housing comprising the steps of: a. Applying metalization coating along each generally circular edge of a generally tubular insulator and along a radially directed bore through a wall of said insulator; b. Forming a gate tube assembly by securing metal closures sealably on opposite ends of a gate tube, in a manner that the interior of said gate tube is hermetically sealed; c. Assembling said thyristor housing by brazing generally circular metal members, each having a generally circular periphery, on opposite ends of said insulator and respectively along the metalization coatings on opposite ends thereof and brazing said gate tube assembly in said bore with one end of said gate tube projecting radially outward from said insulator; and d. Thereafter, plating the exposed metal surfaces of said housing.
Claim 2
Independent Claim
135 words
The method of manufacture of a thyristor housing comprising the steps of: a. Applying metalization coating along each generally circular edge of a generally tubular insulator and along a radially directed bore through a wall of said insulator; b. Forming a gate tube assembly by securing metal closures sealably on opposite ends of a gate tube, in a manner that the interior of said gate tube is hermetically sealed; c. Assembling said thyristor housing by brazing generally circular metal members, each having a generally circular periphery, on opposite ends of said insulator and respectively along the metalization coatings on opposite ends thereof and brazing said gate tube assembly in said bore with one end of said gate tube projecting radially outward from said insulator; and d. Thereafter, plating the exposed metal surfaces of said housing.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein one of said closures is frangible and further comprising the final step of puncturing said frangible closure.
Claim 4
Dependent Claim
12 words
The method of claim 2 wherein said brazing steps are performed simultaneously.
Claim 5
Dependent Claim
12 words
The method of Claim 1 wherein said brazing steps are performed simultaneously.
Claim 6
Independent Claim
135 words
The method of manufacture of a thyristor housing comprising the steps of: a. Applying metalization coating along each generally circular edge of a generally tubular insulator and along a radially directed bore through a wall of said insulator; b. Forming a gate tube assembly by securing metal closures sealably on opposite ends of a gate tube, in a manner that the interior of said gate tube is hermetically sealed; c. Assembling said thyristor housing by brazing generally circular metal members, each having a generally circular periphery, on opposite ends of said insulator and respectively along the metalization coatings on opposite ends thereof and brazing said gate tube assembly in said bore with one end of said gate tube projecting radially outward from said insulator; and d. Thereafter, immersing the said housing in a cleaning solution.
Claim 7
Independent Claim
135 words
The method of manufacture of a thyristor housing comprising the steps of: a. Applying metalization coating along each generally circular edge of a generally tubular insulator and along a radially directed bore through a wall of said insulator; b. Forming a gate tube assembly by securing metal closures sealably on opposite ends of a gate tube, in a manner that the interior of said gate tube is hermetically sealed; c. Assembling said thyristor housing by brazing generally circular metal members, each having a generally circular periphery, on opposite ends of said insulator and respectively along the metalization coatings on opposite ends thereof and brazing said gate tube assembly in said bore with one end of said gate tube projecting radially outward from said insulator; and d. Thereafter, immersing the said housing in a cleaning solution.
Claim 8
Dependent Claim
23 words
The method of claim 5 wherein one of said closures is frangible and further comprising the final step of puncturing said frangible closure.
Claim 9
Dependent Claim
12 words
The method of claim 6 wherein said brazing steps are performed simultaneously.
Claim 10
Dependent Claim
12 words
The method of claim 5 wherein said brazing steps are performed simultaneously.
Claim 11
Dependent Claim
19 words
The method of claim 5 further comprising the final step of plating the exposed metal surfaces of said housing.
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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) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |