US4468534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for cutting glass
Assignee: Individual
•
Filing: 1982-09-30
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Granted: 1984-08-28
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Expires: 2002-09-30
Abstract
Abstract A method and device is described for cutting a stationary sheet of glass such as tempered glass using a single, moving laser beam which impinges the glass at right angles to produce a clean cut with minimum thermal shock. Pre-heating and post-cooling means can also be employed along with a tiltable support structure.
Inventors
- 👤 Franc W. Boddicker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:49
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/02; C03B33/04; C03B33/08; C03B33/082
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
74 words
A method of cutting a sheet of tempered plate glass which comprises inclining said glass sheet to a generally horizontal, stationary position and continuously directing a single laser beam in a predetermined path perpendicular to and along a path across the glass sheet, said laser beam being of appropriate wavelength and intensity to produce a localized melt through the glass substantially along the path of contact therewith thereby cutting the glass along said path.
Claim 2
Independent Claim
74 words
A method of cutting a sheet of tempered plate glass which comprises inclining said glass sheet to a generally horizontal, stationary position and continuously directing a single laser beam in a predetermined path perpendicular to and along a path across the glass sheet, said laser beam being of appropriate wavelength and intensity to produce a localized melt through the glass substantially along the path of contact therewith thereby cutting the glass along said path.
Claim 3
Dependent Claim
43 words
The method of claim 1 wherein said laser beam is preceded by means for preheating said path to a temperature below the melting point of the glass and followed by means for quick cooling the edges of the cut to below ambient temperature.
Claim 4
Independent Claim
91 words
A device for cutting a sheet of tempered plate glass comprising frame means for maintaining said glass sheet in a stationary position said frame means being pivotally mounted to move the plane of said glass sheet from a near vertical to a horizontal position and means for directing a single laser beam perpendicular to said glass and in a continuous path across the surface thereof to cut said glass, said laser means being movably mounted on a pivotally mounted arm and adapted to move horizontal to the plane of the glass.
Claim 5
Independent Claim
91 words
A device for cutting a sheet of tempered plate glass comprising frame means for maintaining said glass sheet in a stationary position said frame means being pivotally mounted to move the plane of said glass sheet from a near vertical to a horizontal position and means for directing a single laser beam perpendicular to said glass and in a continuous path across the surface thereof to cut said glass, said laser means being movably mounted on a pivotally mounted arm and adapted to move horizontal to the plane of the glass.
Claim 6
Dependent Claim
34 words
The device of claim 3 which includes means for pre-heating said path of the cut preceding said laser beam and means for quick cooling the edges of the cut subsequent to said laser beam.
References Cited (Backward Citations)
US1785457A
Cited
US3453097A
Cited
US3932726A
Cited
US3935419A
Cited
US3885943A
Cited
US3930825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |