Patent US3863513A successfully refreshed from Google Patents.
US3863513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive unit for continuously operating sheet processing or treating lines
Assignee: Maschinenfabrik Sack GmbH
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Filing: 1973-08-27
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Granted: 1975-02-04
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Expires: 1993-08-27
Abstract
Abstract In a drive unit for sheets to which a traction must be applied, especially in S-roller frames, belt winding means are used to increase the pressing surface between the sheet and the reversing rollers.
Inventors
- 👤 Roland R M Schnettler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:32
CPC Classifications
F; F16; F16H; F16H7/00; F16H7/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
116 words
A tension roll assembly for regulating forward or back tension on a moving strip in strip processing lines comprising a pair of spaced first and second reversing rollers over which the strip is wound in an S-shaped configuration, and an endless belt winding means to increase friction between said strip and said reversing rollers, wherein said endless belt is guided initially in contact with the strip wound over said first reversing roller, then in contact with said second reversing roller and back over two spaced smaller guide rollers positioned in different radial planes of the first reversing roller, one of said guide rollers determining the back pass of said belt free of said first reversing roller.
Claim 2
Dependent Claim
116 words
A tension roll assembly for regulating forward or back tension on a moving strip in strip processing lines comprising a pair of spaced first and second reversing rollers over which the strip is wound in an S-shaped configuration, and an endless belt winding means to increase friction between said strip and said reversing rollers, wherein said endless belt is guided initially in contact with the strip wound over said first reversing roller, then in contact with said second reversing roller and back over two spaced smaller guide rollers positioned in different radial planes of the first reversing roller, one of said guide rollers determining the back pass of said belt free of said first reversing roller.
Claim 3
Dependent Claim
72 words
A tension roll assembly according to claim 1, including a second endless belt winding means comprising two spaced smaller guide rollers positioned in different radial planes of said second reversing roller and a belt guided free of said second reversing roller along the incoming strip, then in contact and around said first reversing roller and in contact with the strip around the second reversing roller back to the two spaced guide rollers.
References Cited (Backward Citations)
US2664758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |