US4288678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating metal workpieces with laser radiation
Assignee: Fiat Auto SpA
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Filing: 1980-02-28
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Granted: 1981-09-08
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Expires: 2000-02-28
Abstract
Abstract Apparatus for treating a metal workpiece includes a laser radiation generator arranged to generate and focus a laser beam onto a workpiece, and a part-spherical mirror so positioned as to refocus onto said workpiece the radiation reflected therefrom. The provision of the mirror increases the percentage of the laser radiation energy absorbed by the workpiece.
Inventors
- 👤 Aldo V. La Rocca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:03
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/02; B23K26/06; B23K26/064; B23K26/0643; B23K26/0665; B23K26/12; B23K26/123
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
Apparatus for treating a metal workpiece with laser radiation, comprising a laser radiation generator arranged to generate and focus a laser beam onto a point on said workpiece, reflecting means arranged to refocus onto said point on said workpiece the radiation reflected therefrom and sensing means attached to said reflecting means for measuring physical and chemical parameters of the treated area of the workpiece by measurements of the radiation which reaches the said reflecting means after being reflected from the treated area of the workpiece.
Claim 2
Dependent Claim
85 words
Apparatus for treating a metal workpiece with laser radiation, comprising a laser radiation generator arranged to generate and focus a laser beam onto a point on said workpiece, reflecting means arranged to refocus onto said point on said workpiece the radiation reflected therefrom and sensing means attached to said reflecting means for measuring physical and chemical parameters of the treated area of the workpiece by measurements of the radiation which reaches the said reflecting means after being reflected from the treated area of the workpiece.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1, wherein the reflecting surface of the said reflecting means is treated with a thermionic coating.
Claim 4
Dependent Claim
36 words
Apparatus according to claim 1, wherein the said reflecting means are partly reflecting, the said sensing means being so arranged as to measure the portion of radiation transmitted through the reflecting surface of said reflecting means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |