US3667335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Edge trimming shears for rolled metal sheets with cross-knives for severing the edge strips
Assignee: Moeller and Neuman GmbH
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Filing: 1970-02-16
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Granted: 1972-06-06
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Expires: 1990-02-16
Abstract
Abstract A straight-knife edge trimming shears more particularly suitable for opposite mounting in shearing lines for cutting thick sheets whose cross-knife for severing the edge strips still connected to the sheet after the cutting by the edge trimming knife has an independent drive and starts its cutting action after the edge trimming knife mounted ahead of the cross-knife.
Inventors
- 👤 Paul Friedrich Hamacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:40
CPC Classifications
B; B23; B23D; B23D31/00; B23D31/04; Y; Y10; Y10S; Y10S83/00; Y10S83/923; Y10T; Y10T83/00; Y10T83/444; Y10T83/4577; Y10T83/647; Y10T83/6476; Y10T83/6478; Y10T83/648; Y10T83/808; Y10T83/869; Y10T83/8798; Y10T83/8804; Y10T83/8805
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
116 words
Edge trimming shears for rolled metal sheet having a pair of straight knives for trimming the sheet edge and cross-knives for severing the edge strips already cut from the sheet, wherein the upper cross knife has an independent drive and the cutting edge of the lower cross-knife is disposed at a lower level than the cutting edge of the stationary lower straight knife, the improvement consisting in that the upper cross-knife (15) is carried by an oscillating lever (24) which is mounted on an oscillating shaft (26) arranged below the cutting edge of the lower straight knife (18) and inclined downwardly in the advancIng direction of the sheet and extending approximately parallel to the straight knives.
Claim 2
Dependent Claim
116 words
Edge trimming shears for rolled metal sheet having a pair of straight knives for trimming the sheet edge and cross-knives for severing the edge strips already cut from the sheet, wherein the upper cross knife has an independent drive and the cutting edge of the lower cross-knife is disposed at a lower level than the cutting edge of the stationary lower straight knife, the improvement consisting in that the upper cross-knife (15) is carried by an oscillating lever (24) which is mounted on an oscillating shaft (26) arranged below the cutting edge of the lower straight knife (18) and inclined downwardly in the advancIng direction of the sheet and extending approximately parallel to the straight knives.
Claim 3
Dependent Claim
45 words
Edge trimming shears according to claim 1 wherein the upper cross-knife (15) is guided in a plane which deviates from the vertical in such a way that the confronting side surface (15a) of the cross-knife forms with the horizontal an angle of over 90* .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |