Patent US2978083A successfully refreshed from Google Patents.
Patent US4665298A successfully refreshed from Google Patents.
US4665298A
Expired / Lapsed
US
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Apparatus for effecting treatment of metal workpieces by means of a power laser
Assignee: Fiat Auto SpA
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Filing: 1985-08-20
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Granted: 1987-05-12
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Expires: 2005-08-20
Abstract
Abstract The apparatus comprises a laser radiation generator which directs a laser beam onto a workpiece to be treated, and a reflector capable of re-directing onto the workpiece undergoing treatment the radiation reflected and/or scattered by the piece. The reflector is formed in such a way as to cause the radiation reflected and scattered by the piece to be re-focused in a zone that is different from but adjacent the zone struck directly by the radiation emitted by the laser generator. In this way a pre-heating or a post-heating of the zone of the workpiece struck directly by the radiation emitted by the generator may be effected.
Inventors
- 👤 Aldo V. La Rocca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:33
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/02; B23K26/06; B23K26/064; B23K26/0643
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
An apparatus for effecting treatment of metal workpieces by means of a power laser comprising support means for movably supporting the workpiece to be treated, a reflector in the form of an ellipsoidal cap having a pair of spaced apart focus points, said cap being mounted-adjacent said support means with said focus points being positioned on the surface of the workpiece supported by said support means and a laser radiation generator for directing a beam directly onto the surface of a workpiece being treated at one of said focus points whereby radiation reflected and scattered by the workpiece will be redirected by said reflector to said second focus point.
Claim 2
Independent Claim
109 words
An apparatus for effecting treatment of metal workpieces by means of a power laser comprising support means for movably supporting the workpiece to be treated, a reflector in the form of an ellipsoidal cap having a pair of spaced apart focus points, said cap being mounted-adjacent said support means with said focus points being positioned on the surface of the workpiece supported by said support means and a laser radiation generator for directing a beam directly onto the surface of a workpiece being treated at one of said focus points whereby radiation reflected and scattered by the workpiece will be redirected by said reflector to said second focus point.
Claim 3
Dependent Claim
28 words
An apparatus as set forth in claim 1 wherein said reflector is provided with an aperture through which said laser beam from said laser radiation generator is directed.
Claim 4
Dependent Claim
38 words
An apparatus as set forth in claim 1 wherein said ellipsoidal cap is oriented relative to said support means with said two focus points being disposed along the line of movement of a workpiece on said support means.
References Cited (Backward Citations)
US3460930A
Cited
US3621198A
Cited
US3603766A
Cited
US3757078A
Cited
US4480168A
Cited
JPH10495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |