Patent US4679202A successfully refreshed from Google Patents.
US4679202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas laser tube apparatus
Assignee: Individual
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Filing: 1985-06-21
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Granted: 1987-07-07
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Expires: 2005-06-21
Abstract
Abstract A gas laser tube has a beryllium inner tube (10) with a precision ground bore aligned on the axis between the anode (20) and the cathode (18) by supporting said inner tube within an alumina outer tube (12) by means of axially spaced, perforated, copper support discs (14). A preferred arrangement has a stainless steel outer jacket forming part of a closed, de-ionized water cooling system.
Inventors
- 👤 Christopher E. Maloney
- 👤 Russell M. Crane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:02
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/032; H01S3/0323; H01S3/04; H01S3/041
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
109 words
Gas laser tube apparatus comprising: an alumina outer tube; an anode; a cathode; respective supports for the anode and cathode, said supports being brazed to the outer tube to locate the anode and cathode adjacent opposite ends of the outer tube generally on the axis of said outer tube; Brewster window stubs carried by the anode and cathode supports; a beryllia inner tube having a precision ground, continuous, axial bore, and a plurality of axially spaced copper discs brased to both the outer and inner tubes and locating the inner tube within the outer tube between the anode and cathode with the continuous bore entered along the anode/cathode axis.
Claim 2
Dependent Claim
109 words
Gas laser tube apparatus comprising: an alumina outer tube; an anode; a cathode; respective supports for the anode and cathode, said supports being brazed to the outer tube to locate the anode and cathode adjacent opposite ends of the outer tube generally on the axis of said outer tube; Brewster window stubs carried by the anode and cathode supports; a beryllia inner tube having a precision ground, continuous, axial bore, and a plurality of axially spaced copper discs brased to both the outer and inner tubes and locating the inner tube within the outer tube between the anode and cathode with the continuous bore entered along the anode/cathode axis.
Claim 3
Dependent Claim
26 words
A gas laser tube according to claim 1 wherein the gas in said tube is selected from the group of gases consisting of Argon and Krypton.
Claim 4
Dependent Claim
23 words
A gas laser tube according to claim 1 wherein the discs are perforated to enable gas flow between the inner and outer tubes.
Claim 5
Dependent Claim
17 words
A gas laser tube according to claim 1 wherein the discs are convoluted to accomodate thermal expansion.
Claim 6
Dependent Claim
15 words
A gas laser tube according to clam 1 wherein the outer tube is air cooled.
Claim 7
Dependent Claim
15 words
A gas laser tube according to clam 1 wherein the outer tube is air cooled.
Claim 8
Dependent Claim
24 words
A gas laser tube according to claim 1 in combination with power supply means for producing an operating voltage selected for given tube dimensions.
Claim 9
Dependent Claim
32 words
A gas laser tube according to claim 1 wherein one of the anode and cathode is fixed to the outer tube and is aligned with the outer tube by supporting annular spacers.
Claim 10
Dependent Claim
17 words
A gas laser tube according to claim 7 wherein the cooling jacket is made of stainless steel.
Claim 11
Dependent Claim
25 words
A gas laser tube according to claim 7 wherein the inner tubular means is formed of two or more tubular parts abutting end to end.
Claim 12
Dependent Claim
18 words
A gas laser tube according to claim 1 wherein the outer tube is surrounded by a cooling jacket.
Claim 13
Dependent Claim
22 words
A gas laser tube according to claim 10, wherein the cooling jacket forms part of a closed cycle de-ionised water cooling system.
Claim 14
Dependent Claim
36 words
A gas laser tube according to claim 1 wherein the inner tube has a diameter in the range 0.5 to 2.5 mm and the outer tube has a diameter in the range 25 to 40 mm.
Claim 15
Dependent Claim
22 words
A gas laser tube according to clam 12, having in operation a discharge length of the order of 3 to 45 cm.
Claim 16
Dependent Claim
22 words
A gas laser tube according to clam 12, having in operation a discharge length of the order of 3 to 45 cm.
References Cited (Backward Citations)
US3531734A
Cited
US4504954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |