US4560084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater preform for sealing a closure
Assignee: Texas Instruments Tucson Corp
•
Filing: 1985-01-09
•
Granted: 1985-12-24
•
Expires: 2005-01-09
Abstract
Abstract A process and apparatus for sealing electronic packages and lids involves placing a heater preform device between the sealing surfaces of the package and lid. If the package and lid are ceramic, the preform may be metallic having a glass coating fused thereto. Similar glass coatings would be fused to the sealing surfaces of the package and lid. The metallic portion of the preform is then heated by, for example, passing an electrical current therethrough to melt the glass and effect the seal.
Inventors
- 👤 Sumner H. Wolfson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:05
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0441; B; B29; B29C; B29C65/00; B29C65/02; B29C65/34; B29C65/3404; B29C65/3444; B29C65/346; B29C65/3468; B29C65/36; B29C65/3604; B29C65/3644; B29C65/366; B29C66/00; B29C66/01; B29C66/05; B29C66/20; B29C66/24; B29C66/242; B29C66/2424; B29C66/24243; B29C66/24244; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C66/53461; B29C66/80; B29C66/81; B29C66/818; B29C66/8181; B29C66/83; B29C66/832; B29C66/8322; H05; H05K; H05K5/00; H05K5/06; H05K5/066; B29C65/3472; B29C65/3476; B29K; B29K2709/00; B29K2709/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
59 words
A heater preform for sealing a package containing electronic components to a lid when the preform is positioned between sealing surfaces of the package and lid and is heated to a predetermined temperature, comprising: a heater portion having an area and shape corresponding substantially to said sealing surface; and first and second contact portions coupled to said heater portion.
Claim 2
Dependent Claim
59 words
A heater preform for sealing a package containing electronic components to a lid when the preform is positioned between sealing surfaces of the package and lid and is heated to a predetermined temperature, comprising: a heater portion having an area and shape corresponding substantially to said sealing surface; and first and second contact portions coupled to said heater portion.
Claim 3
Dependent Claim
21 words
A preform according to claim 1 wherein said heater portion and said first and second contact portions are made of metal.
Claim 4
Dependent Claim
11 words
A preform according to claim 2 wherein said metal is copper.
Claim 5
Dependent Claim
11 words
A preform according to claim 2 wherein said metal is chromium.
Claim 6
Dependent Claim
11 words
A preform according to claim 2 wherein said metal is aluminum.
Claim 7
Dependent Claim
11 words
A preform according to claim 2 wherein said metal is steel.
Claim 8
Dependent Claim
14 words
A preform according to claim 2 wherein said heater portion is coated with solder.
Claim 9
Dependent Claim
14 words
A preform according to claim 2 wherein said heater portion is coated with glass.
Claim 10
Dependent Claim
30 words
A preform according to claim 1 further including first means for producing regions of elevated temperature at the junctions of said heater portion and said first and second contact portions.
Claim 11
Dependent Claim
36 words
A preform according to claim 9 wherein said first and second contact portions are coupled at a narrow end thereof to said heater portion, said contact portion becoming wider with increased distance from said heater portion.
Claim 12
Dependent Claim
20 words
A preform according to claim 10 wherein said first means comprises apertures in said narrow ends proximate said heater portion.
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) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |