US4039799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cutting sheet material
Assignee: Individual
•
Filing: 1975-08-11
•
Granted: 1977-08-02
•
Expires: 1995-08-11
Abstract
Abstract A device for cutting layers of textile material by means of a thermal cutting beam, such as a laser beam, in which the material is supported on a perforated plate which allows dissipation of any heat imparted thereto. The plate is detachably mounted on vertically adjustable supports which engage the plate in the perforations thereof.
Inventors
- 👤 Gunter Stumpf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:04
CPC Classifications
B; B23; B23K; B23K26/00; B23K26/70; B23K26/702
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
121 words
A device for cutting sheet material comprising means for producing a thermal cutting beam, plate-like supporting means for supporting said sheet material in a position in which said thermal cutting beam can cut the sheet material, said plate-like support means having perforations, a plurality of supports, each of said supports including screw means for individual vertical adjustment and an upper conical portion, a cowl seated on each conical portion and having a projection at its upper end insertable in a respective one of perforations in said plate-like supporting means, said plate-like supporting means and said cowls being removable from said conical portion so as to permit rigid sheet material to be supported directly on the conical portions at the apices thereof.
Claim 2
Independent Claim
121 words
A device for cutting sheet material comprising means for producing a thermal cutting beam, plate-like supporting means for supporting said sheet material in a position in which said thermal cutting beam can cut the sheet material, said plate-like support means having perforations, a plurality of supports, each of said supports including screw means for individual vertical adjustment and an upper conical portion, a cowl seated on each conical portion and having a projection at its upper end insertable in a respective one of perforations in said plate-like supporting means, said plate-like supporting means and said cowls being removable from said conical portion so as to permit rigid sheet material to be supported directly on the conical portions at the apices thereof.
Claim 3
Dependent Claim
21 words
A device as claimed in claim 1, in which said supporting means is constituted of a material of high thermal conductivity.
Claim 4
Dependent Claim
15 words
A device as claimed in claim 2, in which said material is copper or brass.
Claim 5
Dependent Claim
16 words
A device as claimed in claim 1 including suction fume-removal means disposed underneath said supporting means.
Claim 6
Dependent Claim
56 words
A device as claimed in claim 1 wherein said means for producing a thermal cutting beam comprises a laser head for producing a laser beam, optical means for directing said beam to said sheet material, a first carriage displaceable longitudinally along said material, and a second carriage supported from the first carriage and displaceable perpendicularly thereof.
Claim 7
Dependent Claim
40 words
A device as claimed in claim 5 wherein said optical means comprises a plurality of optical elements respectively supported on said first and second carriages and means for focussing said laser beam at a given distance above the supporting means.
Claim 8
Dependent Claim
111 words
A device according to claim 1 including suction fume-removal means disposed underneath said supporting means, said supporting means comprising the material of substantially high thermal conductivity, said material being copper or brass, said means for producing a thermal cutting beam comprising a laser head for producing a laser beam, optical means for directing said beam to sheet material, a first carriage displaceable longitudinally along said material, and a second carriage supported from said first carriage and displaceable perpendicularly thereof, said optical means comprising a plurality of optical elements respectively supported on said first and second carriages and means for focusing said laser beam at a given distance above said supporting means.
References Cited (Backward Citations)
US1949262A
Cited
US2890883A
Cited
US3175820A
Cited
US3424413A
Cited
US3828159A
Cited
US3736402A
Cited
US3761675A
Cited
US3931491A
Cited
US3944203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |