Patent US4405852A successfully refreshed from Google Patents.
US4405852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for decorating spectacle frames
Assignee: Marwitz and Hauser GmbH
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Filing: 1981-03-30
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Granted: 1983-09-20
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Expires: 2001-03-30
Abstract
Abstract The process provides a method of decorating spectacle frame parts by removing a jacket material from the core according to a decorative pattern, thus exposing a bright surface of the core. The jacket material is removed by a laser beam, the energy of which lies below the energy level required to weld the metal and above the energy level required to evaporate the jacket. A mirror apparatus in the path of the laser beam is controlled to the desired course of the decoration, to control the point of impingement of the laser beam on the jacket.
Inventors
- 👤 Walter Bononi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:51
CPC Classifications
G; G02; G02C; G02C5/00; B; B23; B23K; B23K26/00; B23K26/18; B23K26/36; B23K26/361; B44; B44B; B44B7/00; G02C11/00; G02C11/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
A process of decorating spectacle frame parts provided with a metal core having a bright surface, with a jacket of a different material over the core, comprising: Placing the frame part in the path of a laser beam, the energy of which lies below the energy required to weld the metal and above the energy required to evaporate the jacket, and Controlling a mirror apparatus in the path of the laser beam, according to the desired course of the decoration, to control the point of impingement of the laser beam on the jacket.
Claim 2
Dependent Claim
93 words
A process of decorating spectacle frame parts provided with a metal core having a bright surface, with a jacket of a different material over the core, comprising: Placing the frame part in the path of a laser beam, the energy of which lies below the energy required to weld the metal and above the energy required to evaporate the jacket, and Controlling a mirror apparatus in the path of the laser beam, according to the desired course of the decoration, to control the point of impingement of the laser beam on the jacket.
Claim 3
Dependent Claim
17 words
The process according to claim 1, comprising providing a metal core with a jacket of plastic material.
Claim 4
Dependent Claim
20 words
The process according to claim 2, comprising providing a metal core, with a plastic jacket that is colored through black.
Claim 5
Dependent Claim
30 words
The process according to claim 2, comprising providing a metal core with a jacket of plastic material that is water-clear and coloring the jacket after the frame part is decorated.
Claim 6
Dependent Claim
17 words
The process according to claim 1, comprising providing a metal core with a jacket of black metal.
Claim 7
Dependent Claim
18 words
The process according to claim 1, comprising providing a metal core with a jacket of black chromium-plated nickel.
Claim 8
Dependent Claim
34 words
The process according to claim 1, comprising generating the laser beam by use of a solid state laser with a continuous wave power of several watts and a wavelength in the 1 μm region.
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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |