US4037749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed envelope and method of making the same
Assignee: AT&T Inc
•
Filing: 1976-03-15
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Granted: 1977-07-26
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Expires: 1996-03-15
Abstract
Abstract An hermetically sealed envelope comprises a base having a groove therein, a tubelike cover inserted within the groove, and a sealing member surrounding the cover within the groove. A cold weld between the member and the cover is achieved by permanently deforming the member within the groove. A vacuum-tight seal is thereby achieved in the field without the use of heat, large force, sealants or adhesives.
Inventors
- 👤 Kurt Reznicek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:58
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0441; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/132
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
60 words
A hermetically sealed envelope comprising: a base having an elevated portion on the surface thereof; a tubelike cover having one end portion fitted in the proximity of said elevated portion; and a separate sealing member positioned around said end portion and cold welded to said cover through permanent deformation thereby achieving a vacuum-tight seal between said base and said cover.
Claim 2
Dependent Claim
60 words
A hermetically sealed envelope comprising: a base having an elevated portion on the surface thereof; a tubelike cover having one end portion fitted in the proximity of said elevated portion; and a separate sealing member positioned around said end portion and cold welded to said cover through permanent deformation thereby achieving a vacuum-tight seal between said base and said cover.
Claim 3
Dependent Claim
50 words
A hermetically sealed envelope according to claim 1 wherein the elevated portion is formed by a nonmetallic ring having a metal layer on the inner surface thereof and cemented to the surface of a nonmetallic base, whereby said sealing member is positioned between said metal layer and said end portion.
Claim 4
Dependent Claim
20 words
A hermetically sealed envelope according to claim 1 wherein said cover has one end portion fitted around said elevated portion.
Claim 5
Dependent Claim
19 words
A hermetically sealed envelope according to claim 3, wherein said cover and said elevated portion have circular cross sections.
Claim 6
Dependent Claim
24 words
A hermetically sealed envelope according to claim 3 wherein said elevated portion is part of a groove formed on the surface of the base.
Claim 7
Dependent Claim
66 words
A hermetic seal formed between a base and a tubelike body comprising: an elevated portion on the surface of the base, the body having one end portion thereof fitted in the proximity of said elevated portion; and a separate sealing member positioned around said end portion and cold welded to said body through permanent deformation thereby achieving a vacuum-tight seal between said base and said body.
Claim 8
Dependent Claim
66 words
A hermetic seal formed between a base and a tubelike body comprising: an elevated portion on the surface of the base, the body having one end portion thereof fitted in the proximity of said elevated portion; and a separate sealing member positioned around said end portion and cold welded to said body through permanent deformation thereby achieving a vacuum-tight seal between said base and said body.
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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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |