Patent US4375971A successfully refreshed from Google Patents.
US4375971A
Expired / Lapsed
US
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Fold roller
Assignee: DICK MOLL Inc dba DICK MOLL & SONS
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Filing: 1981-07-29
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Granted: 1983-03-08
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Expires: 2001-07-29
Abstract
Abstract A fold roller is disclosed for use in paper folding machines, to rip sheets of paper advanced for folding which roller includes a metal core with a resilient sleeve bonded thereto, the surface of the sleeve having ribs with flat faces separated by helical grooves thereon from one end to the other, providing for paper folding with reduced side slip and expelling debris picked up from the surface of the sheets of paper while maintaining constant grip.
Inventors
- 👤 Richard J. Moll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:30
CPC Classifications
B; B65; B65H; B65H45/00; B65H45/12; B65H45/14; B65H45/142; B65H45/147; B65H27/00; B65H2404/00; B65H2404/10; B65H2404/13; B65H2404/131; B65H2404/1316; B65H2404/13162; B65H2404/14; B65H2404/141; B65H2404/1414
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
60 words
In a paper folding apparatus having at least one folding roll couple wherein at least one of the rollers comprises a core, a resilient covering of urethane secured to said core, with a durometer in the range from 60 to 70, and a plurality of ribs with flat faces separated by helical grooves on the peripheral surface of said roller.
Claim 2
Dependent Claim
60 words
In a paper folding apparatus having at least one folding roll couple wherein at least one of the rollers comprises a core, a resilient covering of urethane secured to said core, with a durometer in the range from 60 to 70, and a plurality of ribs with flat faces separated by helical grooves on the peripheral surface of said roller.
Claim 3
Dependent Claim
15 words
A fold roller as defined in claim 1 in which said core is of steel.
Claim 4
Dependent Claim
25 words
A fold roller as defined in claim 1 in which said core has band portions contiguous its ends, and a center section of reduced diameter.
Claim 5
Dependent Claim
32 words
A fold roller as defined in claim 1 in which said grooves on the peripheral surface of said roller are of the order of sixteen to the inch lengthwise of the roller.
Claim 6
Dependent Claim
17 words
A fold roller as defined in claim 1 in which said covering is vulcanized to said core.
References Cited (Backward Citations)
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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) | 1986-03-07 | 1986-09-06 | 1987-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-07 | 1990-09-06 | 1991-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-07 | 1994-09-06 | 1995-03-08 | $7700.00 | Window Closed / Lapsed |