Patent US3950833A successfully refreshed from Google Patents.
US3950833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll covering composition
Assignee: Beloit Corp
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Filing: 1975-01-28
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Granted: 1976-04-20
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Expires: 1995-01-28
Abstract
Abstract A roller having an improved covering layer and a process for making such. The covering layer has a generally continuous, seamless matrix phase and a generally circumferentially extending open-celled foam structure which is distributed throughout such matrix phase and preferably is coextensive therewith. The process involves the steps of mounting an open-celled, preformed foam layer over roll circumferential portions, depositing a liquid comprising a resin or resin precursor in the foam layer, and converting such liquid into a solid organic resin.
Inventors
- 👤 Richard J. Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:32
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; D; D21; D21F; D21F3/00; D21F3/02; D21F3/08; F; F16; F16C; F16C13/00; B29L; B29L2031/00; B29L2031/32; B29L2031/324
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
77 words
In a roller of the type comprising a cylindrical body and shaft means at opposed ends thereof adapting said cylindrical body for rotational movements, the improvements which comprises a layer continuously covering in face-to-face engagement circumferential surface portions of said cylindrical body, said layer being comprised of organic plastic and being further characterized by having a generally continuous, seamless matrix phase, and a generally circumferentially extending open-celled foam structure which is distributed throughout said matrix phase circumferentially.
Claim 2
Dependent Claim
77 words
In a roller of the type comprising a cylindrical body and shaft means at opposed ends thereof adapting said cylindrical body for rotational movements, the improvements which comprises a layer continuously covering in face-to-face engagement circumferential surface portions of said cylindrical body, said layer being comprised of organic plastic and being further characterized by having a generally continuous, seamless matrix phase, and a generally circumferentially extending open-celled foam structure which is distributed throughout said matrix phase circumferentially.
Claim 3
Dependent Claim
17 words
The roller of claim 1 wherein said foam structure is generally coextensive with said matrix phase radially.
Claim 4
Dependent Claim
17 words
The roller of claim 1 wherein said layer ranges in thickness from about 0.1 to 1.5 inches.
Claim 5
Dependent Claim
18 words
The roller of claim 1 wherein said matrix phase and said foam structure each comprise a thermoset resin.
Claim 6
Dependent Claim
13 words
The roller of claim 1 wherein said foam structure is comprised of polyurethane.
Claim 7
Dependent Claim
13 words
The roller of claim 5 wherein said matrix phase is comprised of polyurethane.
Claim 8
Dependent Claim
17 words
The roller of claim 1 further having journal means adapting said cylindrical body for such rotational movements.
Claim 9
Dependent Claim
14 words
The roller of claim 1 wherein said matrix phase is comprised of polyester resin.
Claim 10
Dependent Claim
14 words
The roller of claim 1 wherein said matrix phase is comprised of epoxy resin.
Claim 11
Dependent Claim
13 words
The roller of claim 1 wherein said matrix phase is an elastomeric resin.
Claim 12
Dependent Claim
13 words
The roller of claim 10 wherein said matrix phase is a butyl rubber.
Claim 13
Dependent Claim
19 words
The roller of claim 1 wherein said foam structure has from about 5 to 15 cells per lineal inch.
Claim 14
Dependent Claim
16 words
The roller of claim 1 wherein said foam structure contains about 10 cells per lineal inch.
Claim 15
Dependent Claim
15 words
The roller of claim 1 wherein said foam structure is comprised of an organic polymer.
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) | 1979-04-20 | 1979-10-20 | 1980-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-20 | 1983-10-20 | 1984-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-20 | 1987-10-20 | 1988-04-20 | $7700.00 | Window Closed / Lapsed |