US4721543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetic sealing device
Assignee: Texas Instruments Tucson Corp
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Filing: 1985-10-24
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Granted: 1988-01-26
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Expires: 2005-10-24
Abstract
Abstract A method and apparatus for effecting a hermetic seal between an electronic component package and a package cover is disclosed. The method includes the steps of bonding a heater layer of conductive material to a sealing area of the package. A sealing material is then applied over a sealing area of the package cover. Optionally, a layer of sealing material may be applied over the conductive heater layer. The package and cover are contacted together and an electric current induced to flow within the conductive heater layer. The sealing material reacts to the heat caused by the electric current flowing in the heater layer, and bonds to the heater layer to effect a hermetic seal. Additionally, the seal can be intentionally broken by a reheating process to allow for repair or replacement of the electronic components contained within the package, and then resealed by the above described method.
Inventors
- 👤 Sumner H. Wolfson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:34
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0441; H05; H05K; H05K5/00; H05K5/0091; H05K5/0095; H05K5/02; H05K5/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
255 words
An apparatus for effecting a seal between a sealing area of an electronic component package and a sealing area of a package cover, wherein a conductive heater layer is bonded to one of the sealing areas, comprising: (a) stage means for mounting and supporting the package, said stage means being further mounted on a support base and having spring means disposed therebetween for providing a constant force on said stage means thereby maintaining a constant contact force between the electronic component package and the package cover; (b) means for holding, transporting and aligning the package cover including (i) a mount, (ii) hold-down means retained within the mount for transporting the cover to the package, aligning the sealing area of the cover with the sealing area of the package, and holding the cover with the sealing area of the package, and holding the cover in contact with the package during a sealing operation and (iii) means for controlling the temperature of the hold-down means; (c) electrode means for electrically contacting the conductive heater layer, said electrode means comprising: (i) a mount, (ii) an electrode retained with the mount and having a contact face for contacting the conductive heater layer; (iii) means for absorbing impact of the electrode with the conductive heater layer; (iv) means for aligning a plane of the electrode contact face with the conductive heater layer; and (v) means for controlling the temperatures of the electrode; and (d) means for inducing an electric current to pass through the electrodes to the conductive heater layer.
Claim 2
Independent Claim
255 words
An apparatus for effecting a seal between a sealing area of an electronic component package and a sealing area of a package cover, wherein a conductive heater layer is bonded to one of the sealing areas, comprising: (a) stage means for mounting and supporting the package, said stage means being further mounted on a support base and having spring means disposed therebetween for providing a constant force on said stage means thereby maintaining a constant contact force between the electronic component package and the package cover; (b) means for holding, transporting and aligning the package cover including (i) a mount, (ii) hold-down means retained within the mount for transporting the cover to the package, aligning the sealing area of the cover with the sealing area of the package, and holding the cover with the sealing area of the package, and holding the cover in contact with the package during a sealing operation and (iii) means for controlling the temperature of the hold-down means; (c) electrode means for electrically contacting the conductive heater layer, said electrode means comprising: (i) a mount, (ii) an electrode retained with the mount and having a contact face for contacting the conductive heater layer; (iii) means for absorbing impact of the electrode with the conductive heater layer; (iv) means for aligning a plane of the electrode contact face with the conductive heater layer; and (v) means for controlling the temperatures of the electrode; and (d) means for inducing an electric current to pass through the electrodes to the conductive heater layer.
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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) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |