Patent US3828159A successfully refreshed from Google Patents.
US3828159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser cutting surface
Assignee: Raytheon Co
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Filing: 1971-10-08
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Granted: 1974-08-06
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Expires: 1991-10-08
Abstract
Abstract A table surface upon which a workpiece is placed to be cut by a laser beam is constructed in a manner not to be affected by the laser beam and to eliminate adverse effects to the workpiece which can be caused by the setting up of standing waves and/or stray reflections from the table surface.
Inventors
- 👤 R Zoot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:45
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/70; B23K26/702; Y; Y10; Y10T; Y10T83/00; Y10T83/222
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
141 words
In a laser cutter wherein a layer of material is cut by a focused laser beam directed from a source thereof at said material, the combination with said laser source of a honeycomb panel 1. having open cells extending through said panel from its front surface to its back surface, 2. adapted to receive said layer of material directly on said front surface, 3. located so that said front surface faces said focused laser beam and receives said laser beam after it has penetrated said layer of material, and 4. having a wall wedge thickness at said front surface on the order of the magnitude of the diameter of said focused laser beam at the point where it is received by said front surface, whereby said focused beam, after having penetrated said layer of material, passes harmlessly through said honeycomb panel.
Claim 2
Dependent Claim
141 words
In a laser cutter wherein a layer of material is cut by a focused laser beam directed from a source thereof at said material, the combination with said laser source of a honeycomb panel 1. having open cells extending through said panel from its front surface to its back surface, 2. adapted to receive said layer of material directly on said front surface, 3. located so that said front surface faces said focused laser beam and receives said laser beam after it has penetrated said layer of material, and 4. having a wall wedge thickness at said front surface on the order of the magnitude of the diameter of said focused laser beam at the point where it is received by said front surface, whereby said focused beam, after having penetrated said layer of material, passes harmlessly through said honeycomb panel.
Claim 3
Dependent Claim
12 words
adapted to receive said layer of material directly on said front surface,
Claim 4
Dependent Claim
12 words
adapted to receive said layer of material directly on said front surface,
Claim 5
Dependent Claim
13 words
The combination of claim 1 wherein said honeycomb panel is made of aluminum.
Claim 6
Dependent Claim
15 words
The combination of claim 1 wherein te honeycomb panel is made of a refractory material.
Claim 7
Dependent Claim
25 words
located so that said front surface faces said focused laser beam and receives said laser beam after it has penetrated said layer of material, and
Claim 8
Dependent Claim
25 words
located so that said front surface faces said focused laser beam and receives said laser beam after it has penetrated said layer of material, and
Claim 9
Dependent Claim
51 words
having a wall wedge thickness at said front surface on the order of the magnitude of the diameter of said focused laser beam at the point where it is received by said front surface, whereby said focused beam, after having penetrated said layer of material, passes harmlessly through said honeycomb panel.
Claim 10
Dependent Claim
51 words
having a wall wedge thickness at said front surface on the order of the magnitude of the diameter of said focused laser beam at the point where it is received by said front surface, whereby said focused beam, after having penetrated said layer of material, passes harmlessly through said honeycomb panel.
Claim 11
Dependent Claim
19 words
The combination of claim 1 additionally including heat absorbing material disposed adjacent the back surface of said honeycomb panel.
Claim 12
Dependent Claim
17 words
The combination of claim 34 wherein the surface of said heat absorbing material is blackened and roughened.
Claim 13
Dependent Claim
42 words
The combination of claim 4 wherein said heat absorbing material is made of aluminum and wherein said aluminum has an upper surface which is roughened and coated with a material which is substantially non-energy reflective at the wavelength of said laser beam.
Claim 14
Dependent Claim
14 words
The combination of claim 4 wherein said heat absorbing material is a refractory material.
Claim 15
Dependent Claim
12 words
The combination of claim 4 wherein said heat absorbing material is asbestos.
Claim 16
Independent Claim
116 words
A method for supporting a layer of material being cut by a focused laser beam directed at the top surface of said layer comprising: laying said material upon the front surface of a honeycomb panel whose front surface faces said focused beam so as to receive said laser beam after it has penetrated said layer of material, whose cells are open at said top surface, and whose cell walls have an edge thickness on the order of the magnitude of the diameter of said focused laser beam at the point where it is received by said front surface, whereby said focused laser beam, after having penetrated said layer of material, passes harmlessly through said honeycomb panel.
Claim 17
Independent Claim
116 words
A method for supporting a layer of material being cut by a focused laser beam directed at the top surface of said layer comprising: laying said material upon the front surface of a honeycomb panel whose front surface faces said focused beam so as to receive said laser beam after it has penetrated said layer of material, whose cells are open at said top surface, and whose cell walls have an edge thickness on the order of the magnitude of the diameter of said focused laser beam at the point where it is received by said front surface, whereby said focused laser beam, after having penetrated said layer of material, passes harmlessly through said honeycomb panel.
References Cited (Backward Citations)
US1648683A
Cited
US2573115A
Cited
US2823460A
Cited
US2890883A
Cited
US3226527A
Cited
US3629545A
Cited
US3612814A
Cited
US3626800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |