Patent US3786732A successfully refreshed from Google Patents.
US3786732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting and scoring die
Assignee: Westvaco Corp
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Filing: 1972-02-16
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Granted: 1974-01-22
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Expires: 1992-02-16
Abstract
Abstract An apparatus for cutting and scoring sheet-like material is described comprising a single die plate which includes both severing elements and scoring elements mounted thereon. The severing elements constitute the usual knife blades employed in prior art sheet cutting and scoring dies. However, the scoring elements constitute novel pairs of knife blades which eliminate the need for a conventional makeready or female die as required in the prior art devices.
Inventors
- 👤 H Forbes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:05
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/38; B26F1/44; B65; B65D; B65D5/00; B65D5/42; B65D5/4266; B26F1/40; B26F2001/4472; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0207
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
145 words
In an apparatus for simultaneously cutting and scoring the inside surface of sheet-like material in order to form blanks having uninterrupted exterior surfaces, a single die plate having both cutting and scoring elements fixedly mounted thereon, said cutting elements consisting of single sharpened cutting knives that extend beyond the surface of the die plate a distance sufficient to effect complete severance of the sheet like material and said scoring elements consisting of paired, parallel and sharpened scoring knives, said paired scoring knives being separated from one another by a distance which is only slightly greater than the thickness of the sheet-like material being cut and scored and extending beyond the surface of the die plate a distance sufficient to produce score lines in said sheet-like material in the form of parallel cut lines which penetrate the sheet-like material sufficiently to rupture the uppermost surface thereof.
Claim 2
Dependent Claim
145 words
In an apparatus for simultaneously cutting and scoring the inside surface of sheet-like material in order to form blanks having uninterrupted exterior surfaces, a single die plate having both cutting and scoring elements fixedly mounted thereon, said cutting elements consisting of single sharpened cutting knives that extend beyond the surface of the die plate a distance sufficient to effect complete severance of the sheet like material and said scoring elements consisting of paired, parallel and sharpened scoring knives, said paired scoring knives being separated from one another by a distance which is only slightly greater than the thickness of the sheet-like material being cut and scored and extending beyond the surface of the die plate a distance sufficient to produce score lines in said sheet-like material in the form of parallel cut lines which penetrate the sheet-like material sufficiently to rupture the uppermost surface thereof.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1, wherein the paired, parallel and sharpened scoring knives which form the score lines each have a continuous cutting edge.
Claim 4
Dependent Claim
24 words
The apparatus of claim 1, wherein the paired, parallel and sharpened scoring knives which form the score lines each have an interrupted cutting edge.
Claim 5
Dependent Claim
193 words
A die for simultaneously cutting and scoring the inside surface of sheet-like material in order to form blanks having uninterrupted exterior surfaces, said die being adapted for mounting in a cutting and scoring apparatus and comprising a single die-plate, said die plate including both sheet severing elements and sheet scoring elements fixedly attached thereto, said sheet severing elements consisting of sharpened single cutting knives which extend beyond the surface of the die plate a distance sufficient to completly sever the sheet-like material and being positioned on said die plate where the sheet material is to be severed, and said sheet scoring elements consisting of paired, parallel and sharpened scoring knives said scoring knives in a pair being separated from one another a distance which is only slightly greater than the thickness of the sheet-like material being cut and scored and extending beyond the surface of the die plate a distance sufficient to produce score lines in said sheet-like material in the form of parallel cut lines which penetrate the sheet-like material sufficiently to rupture the uppermost surface thereof and being positioned on said die plate where the sheet material is to be scored.
Claim 6
Dependent Claim
193 words
A die for simultaneously cutting and scoring the inside surface of sheet-like material in order to form blanks having uninterrupted exterior surfaces, said die being adapted for mounting in a cutting and scoring apparatus and comprising a single die-plate, said die plate including both sheet severing elements and sheet scoring elements fixedly attached thereto, said sheet severing elements consisting of sharpened single cutting knives which extend beyond the surface of the die plate a distance sufficient to completly sever the sheet-like material and being positioned on said die plate where the sheet material is to be severed, and said sheet scoring elements consisting of paired, parallel and sharpened scoring knives said scoring knives in a pair being separated from one another a distance which is only slightly greater than the thickness of the sheet-like material being cut and scored and extending beyond the surface of the die plate a distance sufficient to produce score lines in said sheet-like material in the form of parallel cut lines which penetrate the sheet-like material sufficiently to rupture the uppermost surface thereof and being positioned on said die plate where the sheet material is to be scored.
Claim 7
Dependent Claim
39 words
A die for cutting and scoring sheet-like material as defined in claim 4, wherein said sheet scoring knives are spaced from one another a distance of from 2.2 to 2.8 times the thickness of the sheet-like material being scored.
Claim 8
Dependent Claim
34 words
A die for cutting and scoring sheet-like material as defined in claim 5, wherein said single cutting knives and said parallel scoring knives are each center face sharpened to form their respective cutting edges.
Claim 9
Dependent Claim
37 words
A die for cutting and scoring sheet-like material as defined in claim 5, wherein said single cutting knives are center face sharpened and said parallel scoring knives are side face sharpened to form their respective cutting edges.
References Cited (Backward Citations)
US695029A
Cited
US1288132A
Cited
US1592094A
Cited
US2586744A
Cited
US3481813A
Cited
US3564942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |