Patent US3717823A successfully refreshed from Google Patents.
US3717823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-glass laser window assembly
Assignee: Unisys Corp
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Filing: 1971-09-20
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Granted: 1973-02-20
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Expires: 1991-09-20
Abstract
Abstract A laser tube end window assembly comprising a first apertured metallic plate bonded to an end of the laser tube with the aperture aligned with the tube bore, a second apertured metallic plate also positioned with its aperture aligned with the tube bore and sealed about its periphery to the periphery of the first plate, and an optical window secured within the aperture of the second plate.
Inventors
- 👤 J Abdale
- 👤 R Gartner
- 👤 K Knudsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:38
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
106 words
A laser tube to which an end window assembly is sealed wherein the window assembly comprises a first apertured metallic plate member bonded to an end of the laser tube with the aperture aligned with the bore of the tube, a second apertured metallic plate member positioned with its aperture aligned with the tube bore and sealed at or near and about its periphery at or near the periphery of the first plate member, and an optical window secured within the aperture of the second plate member by a bond between the periphery of said window and the edge of the aperture in said second member.
Claim 2
Dependent Claim
106 words
A laser tube to which an end window assembly is sealed wherein the window assembly comprises a first apertured metallic plate member bonded to an end of the laser tube with the aperture aligned with the bore of the tube, a second apertured metallic plate member positioned with its aperture aligned with the tube bore and sealed at or near and about its periphery at or near the periphery of the first plate member, and an optical window secured within the aperture of the second plate member by a bond between the periphery of said window and the edge of the aperture in said second member.
Claim 3
Dependent Claim
42 words
The apparatus of claim 1 wherein the radial dimension from the edge of the apertures of the respective plates to the periphery thereof and the thickness of the related plate are proportioned to provide a predetermined temperature drop across said radial dimension.
Claim 4
Independent Claim
121 words
The method of constructed laser tube end window comprising the steps of bonding a first apertured metallic plate to an end of the laser tube with the aperture aligned with the tube bore by heating the tube to its melting temperature in the region of contact with the plate, bonding an optical window within the aperture of a second apertured metallic plate by heating the optical window to its melting temperature in the region of contact with the plate, polishing the major light transmissive surfaces of the optical window to a laser quality finish, and welding the first and second apertured plates together at or near and about their peripheries suCh that the optical window is aligned with the tube bore.
Claim 5
Independent Claim
121 words
The method of constructed laser tube end window comprising the steps of bonding a first apertured metallic plate to an end of the laser tube with the aperture aligned with the tube bore by heating the tube to its melting temperature in the region of contact with the plate, bonding an optical window within the aperture of a second apertured metallic plate by heating the optical window to its melting temperature in the region of contact with the plate, polishing the major light transmissive surfaces of the optical window to a laser quality finish, and welding the first and second apertured plates together at or near and about their peripheries suCh that the optical window is aligned with the tube bore.
References Cited (Backward Citations)
US3420603A
Cited
US3555450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |