US3668981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for scoring fiber cans
Assignee: Pillsbury Co
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Filing: 1970-05-18
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Granted: 1972-06-13
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Expires: 1990-05-18
Abstract
Abstract The outer surface of the body of a fiber can is scored by cutting through a portion of its thickness from the outside thereof with a cutting blade affixed to the lower end of a seaming roll which simultaneously crimps the lid to the body wall of the can. The cutting blade is circular in configuration and is positioned to rotate on a center which is offset laterally with relation to the center shaft of the seaming roll. The distance that the rotation axis of the cutting blade is offset can be selectively changed to precisely control the cutting depth.
Inventors
- 👤 Charles Henry Turpin
- 👤 John A Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:26
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/0003; B31F1/0038; B31B; B31B50/00; B31B50/74; B31B50/81; B31B2105/00; B31B2105/002; B31B2105/0022; B31B2120/00; B31B2120/002; B31B50/25; B31B50/256; B31B50/26; B31B50/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
In a fiber can seaming apparatus having a seaming roll mounted for rotation upon a supporting shaft upon a first axis to crimp the can end to the body wall of the can when brought into engagement with the can end, means for forming a collar cut in the outer surface of the body of the fiber can comprising a circular cutting blade element mounted for independent rotation upon said shaft on a second axis offset from said first axis, said blade being thereby supported adjacent to said seaming roll, said blade having a cutting portion positioned to cut partially through the body wall of the can when the can is engaged by the seaming roll.
Claim 2
Dependent Claim
116 words
In a fiber can seaming apparatus having a seaming roll mounted for rotation upon a supporting shaft upon a first axis to crimp the can end to the body wall of the can when brought into engagement with the can end, means for forming a collar cut in the outer surface of the body of the fiber can comprising a circular cutting blade element mounted for independent rotation upon said shaft on a second axis offset from said first axis, said blade being thereby supported adjacent to said seaming roll, said blade having a cutting portion positioned to cut partially through the body wall of the can when the can is engaged by the seaming roll.
Claim 3
Dependent Claim
121 words
The apparatus of claim 1 wherein a blade bearing is mounted at the lower end of the shaft for rotation upon said first axis, said blade bearing has a bearing surface, means releasably locking the blade bearing to the lower end of the shaft, said blade being circular and being mounted for rotation upon the bearing surface, said bearing surface being offset with relation to the first axis whereby the disengagement of the releasable locking means enables the blade bearing to be rotated on the first axis to thereby change the offset distance of the bearing surface and the cutting blade with respect to the axis of rotation of the seaming roll to thereby alter the depth of the collar cut.
Claim 4
Dependent Claim
36 words
The apparatus of claim 1 wherein means is provided for selectively changing the amount of offset of the axis of rotation of the cutting blade with relation to the axis of rotation of the seaming roll.
Claim 5
Dependent Claim
39 words
The apparatus according to claim 1 wherein a frictional drag means is provided between the cutting blade and the shaft whereby the blade is able to rotate with a predetermined degree of resistance with respect to the blade bearing.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |