Patent US5600668A successfully refreshed from Google Patents.
US5600668A
Expired / Lapsed
US
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Slab laser
Assignee: Rofin Sinar Laser GmbH
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Filing: 1995-06-23
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Granted: 1997-02-04
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Expires: 2015-06-23
Abstract
Abstract A slab laser includes cooled, mutually parallel electrodes having a given thickness. The electrodes have flat surfaces facing each other and defining a discharge chamber therebetween for containing a gas to be pumped, and the electrodes have flat surfaces facing away from the discharge chamber. Each of the electrodes has a plurality of sections being spatially separated from one another over at least a portion of the given thickness of the respective electrode. The electrodes are supported in such a way that movements of the flat surfaces facing away from the discharge chamber being caused by thermal expansion are opposed by only a negligible mechanical resistance.
Inventors
- 👤 Kai Erichsen
- 👤 Hermann Hage
- 👤 Wolfgang Knapp
- 👤 Berthold Leifermann
- 👤 Volker Scholz
- 👤 Norbert Taufenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:24
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/0315; H01S3/038; H01S3/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
104 words
In a slab laser, an electrode assembly, comprising: a carrier; mutually parallel electrodes supported on said carrier, said electrodes having a given thickness, said electrodes having flat surfaces facing each other and defining and bordering a discharge chamber therebetween for receiving a gas, and said electrodes having flat surfaces facing away from said discharge chamber; each of said electrodes having a plurality of sections spatially separated from one another over at least a portion of said given thickness of said respective electrode; and said electrodes being supported on said carrier such that said flat surfaces facing away from said discharge chamber are freely movable.
Claim 2
Dependent Claim
104 words
In a slab laser, an electrode assembly, comprising: a carrier; mutually parallel electrodes supported on said carrier, said electrodes having a given thickness, said electrodes having flat surfaces facing each other and defining and bordering a discharge chamber therebetween for receiving a gas, and said electrodes having flat surfaces facing away from said discharge chamber; each of said electrodes having a plurality of sections spatially separated from one another over at least a portion of said given thickness of said respective electrode; and said electrodes being supported on said carrier such that said flat surfaces facing away from said discharge chamber are freely movable.
Claim 3
Dependent Claim
27 words
The slab laser according to claim 1, wherein said sections are spatially separated from one another over a majority of said given thickness of said respective electrode.
Claim 4
Dependent Claim
28 words
The slab laser according to claim 1, wherein said sections are separated from one another by groove-like notches formed in one of said flat surfaces of said electrodes.
Claim 5
Dependent Claim
26 words
The slab laser according to claim 3, wherein said groove-like notches are formed in said flat surfaces of said electrodes facing away from said discharge chamber.
Claim 6
Dependent Claim
25 words
The slab laser according to claim 3, wherein said electrodes extend in a longitudinal direction, and said groove-like notches extend crosswise to said longitudinal direction.
Claim 7
Dependent Claim
25 words
The slab laser according to claim 3, wherein said flat surfaces of said electrodes facing toward said discharge chamber have said groove-like notches formed therein.
Claim 8
Dependent Claim
36 words
The slab laser according to claim 6, wherein said sections are individual segments, and including a plate being disposed on said flat surfaces of said electrodes facing toward said discharge chamber and covering said individual segments.
Claim 9
Dependent Claim
25 words
The slab laser according to claim 3, wherein said groove-like notches have a depth being greater than 4/5 of said given thickness of said electrodes.
Claim 10
Dependent Claim
25 words
The slab laser according to claim 3, wherein said groove-like notches have a depth being greater than 9/10 of said given thickness of said electrodes.
Claim 11
Dependent Claim
16 words
The slab laser according to claim 3, wherein said groove-like notches have a rounded groove bottom.
Claim 12
Dependent Claim
44 words
The slab laser according to claim 1, wherein said electrodes each have a first layer and a second layer, and one of said layers is formed of a plurality of spatially separate individual segments disposed side by side on the other of said layers.
Claim 13
Dependent Claim
33 words
The slab laser according to claim 10, wherein said second layer is a plate being disposed on said flat surfaces of said electrodes facing toward said discharge chamber and covering said individual segments.
Claim 14
Dependent Claim
27 words
The slab laser according to claim 1, wherein said sections of said electrodes are spatially separated individual segments, and said electrodes have retainers joining said segments together.
Claim 15
Dependent Claim
13 words
The slab laser according to claim 1, including spacers disposed between said electrodes.
Claim 16
Dependent Claim
19 words
The slab laser according to claim 14, including a carrier on which one of said electrodes is slidably supported.
Claim 17
Dependent Claim
17 words
The slab laser according to claim 1, wherein each of said sections has conduits for a coolant.
Claim 18
Dependent Claim
19 words
The slab laser according to claim 16, including elastic connecting elements joining said sections together and carrying the coolant.
Claim 19
Dependent Claim
36 words
The slab laser according to claim 1, wherein said electrodes have a longitudinal direction and end surfaces extending transversely to the longitudinal direction, and including a high-frequency generator connected to said end surfaces of said electrodes.
Claim 20
Dependent Claim
28 words
The slab laser according to claim 1, wherein said electrodes have long edges, and including a high-frequency generator connected to one of said long edges of said electrodes.
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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) | 2000-02-04 | 2000-08-05 | 2001-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-04 | 2004-08-05 | 2005-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-04 | 2008-08-05 | 2009-02-04 | $7700.00 | Window Closed / Lapsed |