Patent US5037183A successfully refreshed from Google Patents.
US5037183A
Expired / Lapsed
US
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Laser drilling
Assignee: RTX Corp
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Filing: 1989-02-22
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Granted: 1991-08-06
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Expires: 2009-02-22
Abstract
Abstract A plurality of holes are drilled with a repetitively pulsed laser. The time between pulses at one drilling location is utilized to drill the other holes. A rotatable mirror controllably directs the beam to the focusing lens. The distance between the mirror and the lens determines whether the drilled holes are parallel or divergent.
Inventors
- 👤 Ronald Gagosz
- 👤 Richard W. Frye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:41
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/08; B23K26/082; B23K26/36; B23K26/38; B23K26/382; G; G02; G02B; G02B26/00; G02B26/08; G02B26/10; G02B5/00; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
93 words
A method of laser drilling a plurality of holes at closely spaced locations in a material, wherein each hole requires a multiplicity of pulses for the drilling thereof, with a pulsed laser beam comprising: focusing said laser beam at a first location for a first pulse; sequentially focusing said laser beam at each other location for a subsequent pulse at each location; repetitively focusing said laser beam at said first location for a subsequent pulse and repetitively and sequentially focusing said laser beam at each other location for subsequent pulses at each location.
Claim 2
Independent Claim
93 words
A method of laser drilling a plurality of holes at closely spaced locations in a material, wherein each hole requires a multiplicity of pulses for the drilling thereof, with a pulsed laser beam comprising: focusing said laser beam at a first location for a first pulse; sequentially focusing said laser beam at each other location for a subsequent pulse at each location; repetitively focusing said laser beam at said first location for a subsequent pulse and repetitively and sequentially focusing said laser beam at each other location for subsequent pulses at each location.
Claim 3
Dependent Claim
37 words
The method of claim 1 wherein the step of focusing said laser beam at a first location comprises: reflecting said laser beam with a mirror to a lens at a first angle with respect to said lens.
Claim 4
Dependent Claim
41 words
The method of claim 2 wherein the step of sequentially focusing said laser beam at each other location comprises: moving said mirror, and reflecting said laser beam to said lens at a plurality of different angles with respect to said lens.
Claim 5
Dependent Claim
19 words
The method of claim 3 wherein the step of moving said mirror comprises: rotating said mirror around an axis.
Claim 6
Dependent Claim
20 words
The method of claim 1 including: delivering said pulses at each location at a frequency of five to ten Hz.
Claim 7
Dependent Claim
28 words
The method of claim 3 including: locating said mirror a distance from said lens equal to the focal length of said lens, whereby parallel holes will be drilled.
Claim 8
Dependent Claim
28 words
The method of claim 3 including: locating said mirror a distance from said lens less than the focal length of said lens, whereby divergent holes will be drilled.
Claim 9
Dependent Claim
28 words
The method of claim 3 including: locating said mirror a distance from said lens greater than the focal length of said lens, whereby convergent holes will be drilled.
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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) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |