US4575610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser shielding device
Assignee: Milacron Inc
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Filing: 1984-03-12
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Granted: 1986-03-11
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Expires: 2004-03-12
Abstract
Abstract A laser shielding device is disclosed, having two spaced-apart layers of shielding material defining a sealed chamber between the two. At least one layer will degrade in the presence of an impinging laser beam, creating a hole through the layer. A pressure change in the chamber is sensed and signaled to a machine controller to stop the lasing operation.
Inventors
- 👤 James T. Gavin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:40
CPC Classifications
F; F16; F16P; F16P3/00; B; B23; B23K; B23K26/00; B23K26/70; B23K26/702; B23K26/706; F16P1/00; F16P1/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A shielded laser robot system, comprising in combination: (a) a work zone target; (b) robotic means proximate to said work zone target for automatically wielding a laser beam through multi-angle spatial orientations while aiming said beam at said work zone target; and (c) a laser beam shielding device proximate to said work zone target, said shielding device comprising: (1) a first shielding layer comprised of material capable of absorbing at least a portion of a laser light beam and degrading in the presence of said beam, (2) a second shielding layer, (3) means for spacing said first and second layers from one another and for creating a substantially enclosed chamber between the two layers, (4) a pressure source port in fluid communication with said chamber, and (5) means for sensing and signalling a pressure change in said chamber wherein a pressure level may be maintained in said chamber until said first shielding layer is degraded through, causing a pressure chamber leak.
Claim 2
Dependent Claim
161 words
A shielded laser robot system, comprising in combination: (a) a work zone target; (b) robotic means proximate to said work zone target for automatically wielding a laser beam through multi-angle spatial orientations while aiming said beam at said work zone target; and (c) a laser beam shielding device proximate to said work zone target, said shielding device comprising: (1) a first shielding layer comprised of material capable of absorbing at least a portion of a laser light beam and degrading in the presence of said beam, (2) a second shielding layer, (3) means for spacing said first and second layers from one another and for creating a substantially enclosed chamber between the two layers, (4) a pressure source port in fluid communication with said chamber, and (5) means for sensing and signalling a pressure change in said chamber wherein a pressure level may be maintained in said chamber until said first shielding layer is degraded through, causing a pressure chamber leak.
Claim 3
Dependent Claim
16 words
The laser shielding device of claim 1, wherein said first layer is comprised of thermoplastic material.
Claim 4
Dependent Claim
24 words
The laser shielding device of claim 1, wherein said means for sensing and signaling comprises, in part, a pressure switch connected to said chamber.
Claim 5
Dependent Claim
20 words
The laser shielding device of claim 3, wherein said means for sensing and signaling further comprises, in part, an alarm.
Claim 6
Dependent Claim
27 words
The laser shielding device of claim 3, wherein said means for sensing and signaling further comprises, in part, a machine inhibit signal connected to a machine controller.
Claim 7
Dependent Claim
24 words
The laser shielding device of claim 1, further comprising support means for positioning said laser shielding device with respect to a laser working zone.
Claim 8
Dependent Claim
17 words
The laser shielding device of claim 1, wherein said first and second layers are substantially flat sheets.
Claim 9
Dependent Claim
180 words
A shielded laser robot system, comprising in combination: (a) a work zone target; (b) robotic means proximate to said work zone target for automatically wielding a laser beam through multi-angle spatial orientations while aiming said beam at said work zone target; and (c) a laser beam shielding device proximate to said work zone target, said shielding device comprising: (1) a first shielding layer comprised of thermoplastic material capable of absorbing at least a portion of a CO 2 laser beam having a wavelength in the range of 9-11 micrometers and degrading in the presence of said beam, (2) a second shielding layer, (3) means for spacing said first and second layers from one another and for creating a substantially enclosed chamber between the two layers, (4) a pressure source port in fluid communication with said chamber, (5) a pressure switch for sensing and signaling a pressure change in said chamber, (6) a pressure source means for maintaining a pressure level in said chamber, and (7) means for supporting and positioning said shielding layers with respect to a laser working zone.
Claim 10
Dependent Claim
180 words
A shielded laser robot system, comprising in combination: (a) a work zone target; (b) robotic means proximate to said work zone target for automatically wielding a laser beam through multi-angle spatial orientations while aiming said beam at said work zone target; and (c) a laser beam shielding device proximate to said work zone target, said shielding device comprising: (1) a first shielding layer comprised of thermoplastic material capable of absorbing at least a portion of a CO 2 laser beam having a wavelength in the range of 9-11 micrometers and degrading in the presence of said beam, (2) a second shielding layer, (3) means for spacing said first and second layers from one another and for creating a substantially enclosed chamber between the two layers, (4) a pressure source port in fluid communication with said chamber, (5) a pressure switch for sensing and signaling a pressure change in said chamber, (6) a pressure source means for maintaining a pressure level in said chamber, and (7) means for supporting and positioning said shielding layers with respect to a laser working zone.
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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) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |