Patent US5345057A successfully refreshed from Google Patents.
US5345057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cutting an aperture in a device by means of a laser beam
Assignee: Lasag AG
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Filing: 1993-03-25
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Granted: 1994-09-06
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Expires: 2013-03-25
Abstract
Abstract The invention relates to a method of cutting an aperture in a device (1) by means of a laser beam (9), said device comprising a wall (2) having first (5) and second (6) opposing surfaces, and a third surface (7) separated from said wall (2) along the path (11) of said laser beam (9), said method comprising the steps of: (a) causing said laser beam (9) to be incident upon said first surface (10) so as to cut through said wall (2) and form said aperture, and (b) introducing fluid between said second (6) and third (7) surfaces in the path (11) of said laser beam (9) so as to thereby prevent damage to said third surface (7) when said laser beam has cut through said wall. The invention may be used to cut aperture in devices such as injector nozzles syringe needles, medical stents and fluid/air control valves.
Inventors
- 👤 Fritz Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:54
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/14; B23K26/1462; B23K26/1464; B23K26/1476; B23K26/142
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
A method of cutting an aperture in a device by means of a laser beam, said device comprising a first surface, a bore extending partially through said device and defining a second surface opposed to said first surface, and a third surface separated from said second surface along the path of said laser beam, said bore having an open end and a closed end, and said method comprising the steps of: inserting one end of an open-ended tube into the open end of said bore, causing said laser beam to be incident upon said first surface so as to cut through from said first surface to said second surface, and causing a fluid to flow along the interior of said tube and between the exterior to said tube and said second and third surfaces so as to prevent damage to said third surface when said laser beam has cut through from said first surface to said second surface.
Claim 2
Independent Claim
158 words
A method of cutting an aperture in a device by means of a laser beam, said device comprising a first surface, a bore extending partially through said device and defining a second surface opposed to said first surface, and a third surface separated from said second surface along the path of said laser beam, said bore having an open end and a closed end, and said method comprising the steps of: inserting one end of an open-ended tube into the open end of said bore, causing said laser beam to be incident upon said first surface so as to cut through from said first surface to said second surface, and causing a fluid to flow along the interior of said tube and between the exterior to said tube and said second and third surfaces so as to prevent damage to said third surface when said laser beam has cut through from said first surface to said second surface.
Claim 3
Dependent Claim
31 words
A method of cutting an aperture in a device according to claim 1, wherein said one end of said tube has an opening smaller than the interior diameter of said tube.
Claim 4
Dependent Claim
18 words
A method of cutting an aperture in a device according to claim 1, wherein said fluid comprises water.
Claim 5
Dependent Claim
21 words
A method of cutting an aperture in a device according to claim 3, wherein said fluid further comprises an anti-corrosion agent.
Claim 6
Dependent Claim
19 words
A method of cutting an aperture in a device according to claim 4, wherein said anti-corrosion agent includes oil.
Claim 7
Dependent Claim
24 words
A method of cutting an aperture in a device according to claim 1, wherein an Nd.Yag laser is used to supply said laser beam.
Claim 8
Dependent Claim
25 words
A method of cutting an aperture in a device according to claim 1, wherein a CO 2 laser is used to supply said laser beam.
References Cited (Backward Citations)
WO1989003274A1
Cited
US5073694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |