Patent US5014281A successfully refreshed from Google Patents.
US5014281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas laser
Assignee: Coherent Inc
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Filing: 1989-12-19
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Granted: 1991-05-07
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Expires: 2009-12-19
Abstract
Abstract A gas laser includes a laser gas circuit having a by-pass line. The by-pass line includes a condenser for removing water vapor. During normal operation, the laser gas flows through the by-pass line as well as through the remaining portion of the laser gas circuit so that the water vapor portion in the laser gas flowing through the by-pass line is partly removed by the condenser. For the purpose of defrosting the condenser, the by-pass line is isolated from the rest of the laser gas circuit and, if required, is evacuated several times and rinsed with fresh laser gas. During normal operation, the gas laser can be operated with a substantially lower fresh gas supply than piror art circulating lasers.
Inventors
- 👤 Hartmuth Hecht
- 👤 Wolfgang Paul
- 👤 Anton Baumgartner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:50
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/036
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
65 words
A gas laser comprising: a laser resonator; gas circuit means for circulating a lasing gas through the laser resonator, said gas circuit means including a by-pass line having an inlet and an outlet connected to said gas circuit means; and means for condensing and removing water vapor from the lasing gas in the gas circuit means, said condenser means being located in said by-pass line.
Claim 2
Dependent Claim
65 words
A gas laser comprising: a laser resonator; gas circuit means for circulating a lasing gas through the laser resonator, said gas circuit means including a by-pass line having an inlet and an outlet connected to said gas circuit means; and means for condensing and removing water vapor from the lasing gas in the gas circuit means, said condenser means being located in said by-pass line.
Claim 3
Dependent Claim
37 words
A laser as recited in claim 1 wherein said by-pass line further includes a throttle valve, located upstream from said condenser means, said throttle valve for controlling the amount of lasing gas passing through the by-pass line.
Claim 4
Dependent Claim
43 words
A laser as recited in claim 1 wherein said bypass line includes a pair of valves, with said condenser means being located between said valves such that the condenser means can be isolated from the lasing gas circulating in the gas circuit means.
Claim 5
Dependent Claim
62 words
A laser as recited in claim 3 further including a supply line having an inlet to said gas circuit means, said supply line for adding fresh lasing gas to said gas circuit means, said supply line being connectable to said by-pass line for evacuating water vapor from the condenser means when it is isolated from the gas circuit means by said valves.
Claim 6
Dependent Claim
45 words
A laser as recited in claim 4 wherein said gas circuit means includes a pump means for circulating the lasing gas and wherein the inlet and the outlet of the by-pass line are located between the pump means and the inlet of said supply line.
Claim 7
Dependent Claim
27 words
A laser as recited in claim 4 further includes a means for evacuating laser gas from the gas circuit means, said means including a gas ballast pump.
Claim 8
Dependent Claim
15 words
A laser as recited in claim 1 wherein said condenser means includes a defroster means.
Claim 9
Independent Claim
49 words
A method of operating a gas laser having a gas circuit for circulating a lasing gas comprising the steps of: channeling a portion of the circulating lasing gas into a by-pass line; and removing water vapor from the lasing gas in the by-pass line by condensation using condensing means.
Claim 10
Independent Claim
49 words
A method of operating a gas laser having a gas circuit for circulating a lasing gas comprising the steps of: channeling a portion of the circulating lasing gas into a by-pass line; and removing water vapor from the lasing gas in the by-pass line by condensation using condensing means.
Claim 11
Dependent Claim
23 words
A method as recited in claim 8 further including the step of regulating the amount of lasing gas flowing in the by-pass line.
References Cited (Backward Citations)
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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) | 1994-05-06 | 1994-11-05 | 1995-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-06 | 1998-11-05 | 1999-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-06 | 2002-11-05 | 2003-05-07 | $7700.00 | Window Closed / Lapsed |