Patent US3638522A successfully refreshed from Google Patents.
US3638522A
Expired / Lapsed
US
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Cutting device with zigzag knife
Assignee: Schweizerische Industrie Gesellschaft
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Filing: 1970-04-30
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Granted: 1972-02-01
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Expires: 1990-04-30
Abstract
Abstract A cutting device comprising two oppositely rotating roller sectors of which one has attached thereto an axially extending knife with a zigzag-shaped cutting edge which during the rotation of the roller sectors enters an axially extending groove in the other roller sector so as to cut effectively through one or more layers of foil-shaped material which is clamped between the circumferences of said roller sectors.
Inventors
- 👤 Hans-Ulrich Bolli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:38
CPC Classifications
B; B65; B65B; B65B61/00; B65B61/04; B65B61/06; B65B61/08; B26; B26D; B26D1/00; B26D1/56; B26D1/62; B26D1/626; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1313; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4795; Y10T83/4801; Y10T83/483; Y10T83/4836
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
Cutting device comprising two oppositely rotating roller sectors of which the one is fitted with a knife and the other is provided with a groove in which the knife enters upon rotation of the sectors, whereby a web consisting of at least one layer of foil-shaped material disposed between said sectors is successively cut in transverse direction, wherein the improvement comprises that said knife is provided with a zigzag-shaped cutting edge formed by the free-lying edges of the end faces of teeth extending in transverse direction, said teeth being separated from one another by transverse grooves and have each a back whose profile in transverse direction corresponds at least approximately to a cycloid, which moves upon rotation of the sectors closely along the rear outer edge of said groove.
Claim 2
Dependent Claim
129 words
Cutting device comprising two oppositely rotating roller sectors of which the one is fitted with a knife and the other is provided with a groove in which the knife enters upon rotation of the sectors, whereby a web consisting of at least one layer of foil-shaped material disposed between said sectors is successively cut in transverse direction, wherein the improvement comprises that said knife is provided with a zigzag-shaped cutting edge formed by the free-lying edges of the end faces of teeth extending in transverse direction, said teeth being separated from one another by transverse grooves and have each a back whose profile in transverse direction corresponds at least approximately to a cycloid, which moves upon rotation of the sectors closely along the rear outer edge of said groove.
References Cited (Backward Citations)
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US3017795A
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US3244049A
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US3522689A
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US3524301A
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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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |