Patent US3272045A successfully refreshed from Google Patents.
US3272045A
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Flying shear
Assignee: Cookson Sheet Metal Developments Ltd
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Filing: 1964-02-10
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Granted: 1966-09-13
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Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Cookson William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:02
CPC Classifications
B; B23; B23D; B23D25/00; B23D25/02; B23D25/04; Y; Y10; Y10T; Y10T83/00; Y10T83/465; Y10T83/4728; Y10T83/4757; Y10T83/4763
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A FLYING SHEAR FOR CUTTING INTO PREDETERMINED LENGTHS MATERIAL OF THE KIND DESCRIBED COMPRISING: SHEAR BLADES BETWEEN WHICH THE MATERIAL IS MADE TO PASS; A MOUNTING FOR THE SHEAR BLADES WHICH IS FORWARDLY MOVABLE WITH THE MATERIAL; ENGAGEMENT MEANS CONNECTED WITH THE SHEAR BLADES MOUNTING AT A DESIRED DISTANCE IN FROM OF THE SHEAR BLADES IN THE LINE OF ADVANCE OF THE MATERIAL SO AS TO BE ENGAGEABLE BY THE MATERIAL AND MOVE FORWARD IN SHEAR BLADES MOUNTING LEAVING A PREDETERMINED LENGTH OF MATERIAL IN FRONT OF THE BLADES; CAM MEANS FOR CAUSING THE SHEAR BLADES TO CLOSE TOGETHER IN A CUTTING ACTION AS THE SHEAR BLADES MOUNTING IS MOVED FORWARD INCLUDING A CAM ELEMENT CONNECTED TO ONE OF THE SHEAR BLADES AND AN INTERACTING CAM ELEMENT CONNECTED TO A FIXED PART OF THE FLYING SHEAR MECHANISM.
Claim 2
Dependent Claim
137 words
A FLYING SHEAR FOR CUTTING INTO PREDETERMINED LENGTHS MATERIAL OF THE KIND DESCRIBED COMPRISING: SHEAR BLADES BETWEEN WHICH THE MATERIAL IS MADE TO PASS; A MOUNTING FOR THE SHEAR BLADES WHICH IS FORWARDLY MOVABLE WITH THE MATERIAL; ENGAGEMENT MEANS CONNECTED WITH THE SHEAR BLADES MOUNTING AT A DESIRED DISTANCE IN FROM OF THE SHEAR BLADES IN THE LINE OF ADVANCE OF THE MATERIAL SO AS TO BE ENGAGEABLE BY THE MATERIAL AND MOVE FORWARD IN SHEAR BLADES MOUNTING LEAVING A PREDETERMINED LENGTH OF MATERIAL IN FRONT OF THE BLADES; CAM MEANS FOR CAUSING THE SHEAR BLADES TO CLOSE TOGETHER IN A CUTTING ACTION AS THE SHEAR BLADES MOUNTING IS MOVED FORWARD INCLUDING A CAM ELEMENT CONNECTED TO ONE OF THE SHEAR BLADES AND AN INTERACTING CAM ELEMENT CONNECTED TO A FIXED PART OF THE FLYING SHEAR MECHANISM.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |