US5590146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas laser
Assignee: Trumpf Lasertechnik GmbH
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Filing: 1995-05-19
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Granted: 1996-12-31
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Expires: 2015-05-19
Abstract
Abstract In a gas laser (1) with a laser gas circulation path (5) in which a fan (4) conveys the laser gas (6) through a laser discharge space or tube (2) and a cooling system (3a, 3b), the gas throughput is increased by a bypass (8) of the laser discharge space (2). In the bypass may be a filter, cooler and catalyst for treating that portion of the laser gas flowing therethrough. The volume of gas diverted through the bypass may be adjusted to improve the efficiency of the laser.
Inventors
- 👤 Michael von Borstel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:49
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/036; F; F04; F04D; F04D27/00; F04D27/009; H01S3/14; H01S3/22; H01S3/223; H01S3/2232
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
90 words
A gas laser assembly having (a) a laser-gas circulation path (5) including a fan (4) which moves the laser gas (6) through the laser discharge space (2) and a cooling system (3a, 3b); (b) a bypass (8) connected to said path on opposite sides of said fan through which a part (15) of the laser gas (6) is moved by the fan (4) to bypass the laser discharge space (2); and (c) means for opening and for blocking said bypass (8) so that it can be turned off and on.
Claim 2
Dependent Claim
90 words
A gas laser assembly having (a) a laser-gas circulation path (5) including a fan (4) which moves the laser gas (6) through the laser discharge space (2) and a cooling system (3a, 3b); (b) a bypass (8) connected to said path on opposite sides of said fan through which a part (15) of the laser gas (6) is moved by the fan (4) to bypass the laser discharge space (2); and (c) means for opening and for blocking said bypass (8) so that it can be turned off and on.
Claim 3
Dependent Claim
30 words
A gas laser assembly according to claim 1 wherein the pressure quotient of the fan (4) rises as the volume current (V) increases at least in increments or is constant.
Claim 4
Dependent Claim
16 words
A gas laser assembly according to claim 1 wherein said fan (4) is a turbo-radial fan.
Claim 5
Dependent Claim
26 words
A gas laser assembly according to claim 1 wherein said bypass (8) connects the pressure side (9) of the fan (4) to its suction side (10).
Claim 6
Dependent Claim
26 words
A gas laser assembly according to claim 4 characterized by the fact that the bypass (8) is in the fan (4) housing of said fan (4).
Claim 7
Dependent Claim
26 words
A gas laser assembly according to claim 1 wherein there is included in said bypass a filter unit (12) for cleaning the laser gas flowing therethrough.
Claim 8
Dependent Claim
34 words
A gas laser assembly according to claim 1 wherein there is included in one of said bypass and circulation path (5) a measuring device (14) for the volume of said laser gas flowing therethrough.
Claim 9
Dependent Claim
30 words
A gas laser assembly according to claim 7 wherein said measuring device (14) is connected to an adjustable flow resistor (11) in said bypass (8) by a control device (16).
Claim 10
Dependent Claim
19 words
A gas laser assembly according to claim 1 wherein there is included in said bypass a cooling device (13).
Claim 11
Dependent Claim
18 words
A gas laser assembly according to claim 1 wherein said gas laser assembly is a CO 2 laser.
Claim 12
Dependent Claim
24 words
A gas laser assembly according to claim 1 wherein there is included in said bypass a catalyst (21) for treating the gas flowing therethrough.
Claim 13
Dependent Claim
18 words
A gas laser assembly according to claim 1 wherein said bypass (8) is comprised of several individual ducts.
Claim 14
Dependent Claim
18 words
A gas laser assembly according to claim 12 wherein said individual ducts can be separately opened and closed.
Claim 15
Dependent Claim
80 words
A gas laser assembly comprising: (a) a laser-gas circulation path (5) including a fan (4) which moves the laser gas (6) through the laser discharge space (2) and a cooling system (3a, 3b); (b) a bypass (8) connected to said path on opposite sides of said fan through which a part (15) of the laser gas (6) is moved by the fan (4) to bypass the laser discharge space (2); and (c) an adjustable flow resistor (11) in said bypass.
Claim 16
Dependent Claim
80 words
A gas laser assembly comprising: (a) a laser-gas circulation path (5) including a fan (4) which moves the laser gas (6) through the laser discharge space (2) and a cooling system (3a, 3b); (b) a bypass (8) connected to said path on opposite sides of said fan through which a part (15) of the laser gas (6) is moved by the fan (4) to bypass the laser discharge space (2); and (c) an adjustable flow resistor (11) in said bypass.
Claim 17
Dependent Claim
57 words
A gas laser assembly according to claim 14 wherein the pressure quotient of the fan (4) rises as the volume current (V) increases at least in increments or is constant, wherein said fan (4) is a turbo-radial fan, and wherein said bypass (8) connects the pressure side (9) of the fan (4) to its suction side (10).
Claim 18
Dependent Claim
26 words
A gas laser assembly according to claim 14 wherein there is included in said bypass a filter unit (12) for cleaning the laser gas flowing therethrough.
Claim 19
Dependent Claim
56 words
A gas laser assembly according to claim 14 wherein there is included in one of said bypass (8) and circulation path (5) a measuring device (14) for the volume of said laser gas flowing therethrough said measuring device (14) being connected to said adjustable flow resistor (11) in said bypass (8) by a control device (16).
Claim 20
Dependent Claim
36 words
A gas laser assembly according to claim 14 wherein there is included in said bypass a cooling device (13), and wherein there is included in said bypass a catalyst (21) for treating the gas flowing therethrough.
Claim 21
Dependent Claim
18 words
A gas laser assembly according to claim 14 wherein said gas laser assembly is a CO 2 laser.
Claim 22
Dependent Claim
91 words
A gas laser assembly having (a) a laser-gas circulation path (5) including a fan (4) which moves the laser gas (6) through the laser discharge space (2) and a cooling system (3a, 3b); and (b) a bypass (8) in the housing of said fan and connected to said path on opposite sides of said fan through which a part (15) of the laser gas (6) is moved by the fan (4) to bypass the laser discharge space (2), said bypass connecting the pressure side of said fan to its suction side.
Claim 23
Dependent Claim
91 words
A gas laser assembly having (a) a laser-gas circulation path (5) including a fan (4) which moves the laser gas (6) through the laser discharge space (2) and a cooling system (3a, 3b); and (b) a bypass (8) in the housing of said fan and connected to said path on opposite sides of said fan through which a part (15) of the laser gas (6) is moved by the fan (4) to bypass the laser discharge space (2), said bypass connecting the pressure side of said fan to its suction side.
Claim 24
Dependent Claim
30 words
A gas laser assembly according to claim 20 wherein there is included means for opening and for blocking said bypass (8) so that it can be turned off and on.
Claim 25
Dependent Claim
39 words
A gas laser assembly according to claim 20 wherein the pressure quotient of the fan (4) rises as the volume current (v) increases at least in increments or is constant, and wherein said fan (4) is a turbo-radial fan.
Claim 26
Dependent Claim
26 words
A gas laser assembly according to claim 20 wherein there is included in said bypass a filter unit (12) for cleaning the laser gas flowing therethrough.
Claim 27
Dependent Claim
57 words
A gas laser assembly according to claim 20 wherein there is included in one of said bypass and circulation path (5) a measuring device (14) for the volume of said laser gas flowing therethrough, and wherein said measuring device (14) is connected to an adjustable flow resistor (11) in said bypass (8) by a control device (16).
Claim 28
Dependent Claim
29 words
A gas laser assembly according to claim 20 wherein there is included in said bypass a cooling device (13), and a catalyst (21) for treating the gas flowing therethrough.
References Cited (Backward Citations)
US3970957A
Cited
US4550409A
Cited
US4849984A
Cited
US5014281A
Cited
US5206873A
Cited
US5020069A
Cited
US5111473A
Cited
US5239553A
Cited
US5319663A
Cited
US5426659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-12-31 | 2000-07-01 | 2000-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-31 | 2004-07-01 | 2004-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-31 | 2008-07-01 | 2008-12-31 | $7700.00 | Window Closed / Lapsed |