US3593398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relatively long machinery roll having high strength-to-weight ratio
Assignee: Sw Industries Inc
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Filing: 1969-09-11
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Granted: 1971-07-20
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Expires: 1989-09-11
Abstract
Abstract A machinery roll, particularly for use in papermaking machinery, has a mandrel, characteristically composed of a two-phase system having an external phase containing a synthetic polymeric matrix and an internal phase containing aligned continuous carbon fibers. The high tensile strength of the carbon fibers and the compatibility of the polymeric matrix therewith cooperate to permit the construction of relatively long thin rolls which, for example in papermaking machines, enable wider construction and higher speed operation.
Inventors
- 👤 Ralph A Hess
- 👤 James P Ncnamee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:47
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/36; D21F1/40; B; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; F; F16; F16C; F16C13/00; B29L; B29L2031/00; B29L2031/32; B29L2031/324
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
37 words
A roll for machinery in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric matrix and continuous generally parallel carbon fibers.
Claim 2
Dependent Claim
37 words
A roll for machinery in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric matrix and continuous generally parallel carbon fibers.
Claim 3
Dependent Claim
10 words
The roll of claim 1 wherein said cylinder is hollow.
Claim 4
Dependent Claim
10 words
The roll of claim 1 wherein said cylinder is solid.
Claim 5
Dependent Claim
13 words
The roll of claim 1 wherein the periphery is constituted by an elastomer.
Claim 6
Dependent Claim
22 words
The roll of claim 1 wherein the polymeric matrix is composed of a member of the class consisting of epoxies and polyimides.
Claim 7
Dependent Claim
17 words
The roll of claim 1 wherein the carbon fibers are characterized by linear carbon chains without substituents.
Claim 8
Dependent Claim
40 words
In papermaking machine, a table roll in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric external phase and a carbon filament internal phase.
Claim 9
Dependent Claim
40 words
In papermaking machine, a table roll in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric external phase and a carbon filament internal phase.
Claim 10
Dependent Claim
43 words
In a papermaking machine, the tablE roll of claim 7 wherein said synthetic polymeric external phase is composed of a diglycidyl ether of bisphenol and said carbon filament internal phase is composed of spaced elongated carbon filaments characterized by an absence of substituents.
Claim 11
Dependent Claim
41 words
In a papermaking machine, a fly roll in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric external phase and a carbon filament internal phase.
Claim 12
Dependent Claim
41 words
In a papermaking machine, a fly roll in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric external phase and a carbon filament internal phase.
Claim 13
Dependent Claim
43 words
In a papermaking machine, the fly roll of claim 9 wherein said synthetic polymeric external phase is composed of a diglycidyl either of bisphenol and said carbon filament internal phase is composed of spaced elongated carbon filaments characterized by an absence of substituents.
Claim 14
Dependent Claim
47 words
In papermaking machine, a wire return roll in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric external phase and a carbon filament internal phase, said roll presenting a smooth periphery.
Claim 15
Dependent Claim
47 words
In papermaking machine, a wire return roll in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric external phase and a carbon filament internal phase, said roll presenting a smooth periphery.
Claim 16
Dependent Claim
44 words
In a papermaking machine, the wire return roll of claim 7 wherein said synthetic polymeric external phase is composed of a diglycidyl either of bisphenol and said carbon filament internal phase is composed of spaced elongated carbon filaments characterized by an absence of substituents.
Claim 17
Dependent Claim
47 words
In a papermaking machine, a felt roll in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric external phase and a carbon filament internal phase, said roll presenting a smooth periphery.
Claim 18
Dependent Claim
47 words
In a papermaking machine, a felt roll in the form of a cylinder ranging from 25 to 70 in length-to-diameter ratio, said cylinder being characterized by a two-phase composition having a synthetic polymeric external phase and a carbon filament internal phase, said roll presenting a smooth periphery.
Claim 19
Dependent Claim
43 words
In a papermaking machinery, the felt roll of claim 13 wherein said synthetic polymeric external phase is composed of a diglycidyl either of bisphenol and said carbon filament internal phase is composed of spaced elongated carbon filaments characterized by an absence of substituents.
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |