US4426708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser device
Assignee: STICHTING RESEARCH EN TECHNIEK VAN DE KATHOLIEKE UNIVERSITEIT
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Filing: 1981-09-02
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Granted: 1984-01-17
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Expires: 2001-09-02
Abstract
Abstract Laser device comprising a tube for gaseous or vaporous laser material, which tube is sealed at both ends by a window consisting of a plate of radiation-transmissive material. Each window plate rests directly on the associated end face of the tube and is held against this end face by a retaining frame surrounding the window plate and secured to the end face of the tube. The retaining frame has its surface remote from the end face provided with a flange extending inwardly to overlie the periphery of the window plate and has its surface facing the end face provided with a recess located at its inner edge surrounding the side edge of the window plate. An O-ring is received in the recess.
Inventors
- 👤 Albert F. van Etteger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:28
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
185 words
A laser device comprising a tubular cavity containing a gaseous or vaporous material capable of exhibiting laser activity, which cavity is provided at both ends with a window consisting essentially of a plate of suitable, radiation-transmissive material, each window being sealingly secured by means of an O-ring to the respective end face of the cavity so as to seal said cavity, characterized in that the radiation-transmissive plate of each window rests directly on the associated end face of said cavity and is held against said end face by a retaining means in the form of a frame surrounding the window plate and secured by suitable attaching means to the end face of the cavity, which frame has its surface remote from said end face provided with a flange extending inwardly to overlie the periphery of the window plate and has its surface facing said end face provided with a recess located at its inner edge surrounding the side edge of the window plate, which recess is adapted to receive said O-ring, such that the O-ring sealingly bears against the side edge of the window plate.
Claim 2
Dependent Claim
185 words
A laser device comprising a tubular cavity containing a gaseous or vaporous material capable of exhibiting laser activity, which cavity is provided at both ends with a window consisting essentially of a plate of suitable, radiation-transmissive material, each window being sealingly secured by means of an O-ring to the respective end face of the cavity so as to seal said cavity, characterized in that the radiation-transmissive plate of each window rests directly on the associated end face of said cavity and is held against said end face by a retaining means in the form of a frame surrounding the window plate and secured by suitable attaching means to the end face of the cavity, which frame has its surface remote from said end face provided with a flange extending inwardly to overlie the periphery of the window plate and has its surface facing said end face provided with a recess located at its inner edge surrounding the side edge of the window plate, which recess is adapted to receive said O-ring, such that the O-ring sealingly bears against the side edge of the window plate.
Claim 3
Dependent Claim
28 words
A laser device according to claim 1, characterized in that said recess is dimensioned so that said O-ring fills at least 90% of the volume of said recess.
References Cited (Backward Citations)
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US3717823A
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US3986141A
Cited
US4233568A
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US4052681A
Cited
US4064466A
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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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |