Patent US3894795A successfully refreshed from Google Patents.
US3894795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plural element window construction for an opening of a laser cavity
Assignee: Government of France
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Filing: 1974-01-16
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Granted: 1975-07-15
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Expires: 1994-01-16
Abstract
Abstract A window construction for a laser cavity comprising a plurality of monocrystalline elements transparent to a laser beam assembled in a common plane in fixed, sealed relation by a support constituted by a mounting element and a cover. The cover and mounting element include respective and corresponding central portions, peripheral frames and connecting bars superposed on one another and the monocrystalline elements are secured between the cover and mounting element in lodgements formed by the central portion, peripheral frame and bars.
Inventors
- 👤 Albert A Laurens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:27
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034; H01S3/04; H01S3/0401
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
72 words
A window construction for a laser cavity having an opening, said construction comprising at least two elements transparent to a laser beam, and fixed support means for mounting said elements in a common plane in fixed, sealed relation at the opening of the laser cavity, said transparent elements being monocrystalline and having inner faces which are freely open into the laser cavity and outer faces which are freely open to the exterior.
Claim 2
Dependent Claim
72 words
A window construction for a laser cavity having an opening, said construction comprising at least two elements transparent to a laser beam, and fixed support means for mounting said elements in a common plane in fixed, sealed relation at the opening of the laser cavity, said transparent elements being monocrystalline and having inner faces which are freely open into the laser cavity and outer faces which are freely open to the exterior.
Claim 3
Dependent Claim
16 words
A construction as claimed in claim 1 wherein each element is a sheet having parallel faces.
Claim 4
Dependent Claim
17 words
A construction as claimed in claim 1 wherein said support means includes means for cooling said elements.
Claim 5
Dependent Claim
55 words
A construction as claimed in claim 1 wherein said support means comprises a mounting element including a peripheral frame adapted for being secured around the opening of the laser cavity, a central portIon, and bars connecting said central portion to said peripheral frame, said frame, central portion, and bars defining lodgings for said transparent elements.
Claim 6
Dependent Claim
39 words
A construction as claimed in claim 4 wherein said mounting element is provided with passages therein contiguous to said transparent elements at the edges thereof and adapted for flow of a cooling fluid therethrough to cool said transparent elements.
Claim 7
Dependent Claim
22 words
A construction as claimed in claim 4 comprising means for connecting an internal mirror to said central portion of the mounting element.
Claim 8
Dependent Claim
29 words
A construction as claimed in claim 4 wherein said bars have surfaces facing the laser beam which have faces inclined with respect to the faces of the transparent elements.
Claim 9
Dependent Claim
13 words
A construction as claimed in claim 7 wherein said inclined faces are polished.
Claim 10
Dependent Claim
145 words
A window construction for a laser cavity having an opening, said construction comprising at least two elements transparent to a laser beam, and support means for mounting said elements in a common plane in fixed, sealed relation at the opening of the laser cavity, said support means comprising a mounting element including a peripheral frame adapted for being secured around the opening of the laser cavity, a central portion, bars connecting said central portion to said peripheral frame; said frame, central portion, and bars defining lodgings for said transparent elements, a fixed cover on said mounting element, said cover including a peripheral frame, a central portion and further bars connecting the central portion to the peripheral frame, said peripheral frame, central portion and further bars of the cover being superposed on those of said mounting element with the transparent elements disposed therebetween and sealed thereto.
Claim 11
Dependent Claim
145 words
A window construction for a laser cavity having an opening, said construction comprising at least two elements transparent to a laser beam, and support means for mounting said elements in a common plane in fixed, sealed relation at the opening of the laser cavity, said support means comprising a mounting element including a peripheral frame adapted for being secured around the opening of the laser cavity, a central portion, bars connecting said central portion to said peripheral frame; said frame, central portion, and bars defining lodgings for said transparent elements, a fixed cover on said mounting element, said cover including a peripheral frame, a central portion and further bars connecting the central portion to the peripheral frame, said peripheral frame, central portion and further bars of the cover being superposed on those of said mounting element with the transparent elements disposed therebetween and sealed thereto.
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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |