Patent US3091923A successfully refreshed from Google Patents.
Patent US4287649A successfully refreshed from Google Patents.
US4287649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roller construction for paper feeding
Assignee: TMP Technologies Inc
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Filing: 1980-03-13
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Granted: 1981-09-08
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Expires: 2000-03-13
Abstract
Abstract A paper feeding roller construction including a core of foamed cellular resilient material which has a shore hardness which is not measurable to thereby provide extremely easy compressibility, and an annular skin of a relatively hard elastic material on the core for providing toughness and abrasion-resistance, with the annular skin being coated onto the core so as to retain the cellular structure thereof on its surface to provide air pockets.
Inventors
- 👤 Henry A. Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:16
CPC Classifications
B; B65; B65H; B65H27/00; B65H2404/00; B65H2404/10; B65H2404/18; B65H2404/181; B65H2404/185; B65H2404/50; B65H2404/52; B65H2404/521
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
165 words
A paper feeding roller for feeding paper comprising a core of soft resilient material, an annular skin of abrasion-resistant flexible material secured to said core, and an outer surface on said annular skin having depression means therein for causing said outer surface to have a tread for gripping said paper and feeding said paper when said paper is free to move and for accepting air for avoiding planing of said roller when said paper is being fed by said roller and for acting as a lubricant to permit slipping between said paper and said roller in the event said paper is held against movement and for receiving paper particles from said paper, said annular skin being capable of flexing with said core to conform to the surface of the paper against which it is pressed, and said annular skin returning to its original shape upon terminating contact with said paper for ejecting said paper particles from said depression means to thereby produce a self-cleaning action.
Claim 2
Dependent Claim
165 words
A paper feeding roller for feeding paper comprising a core of soft resilient material, an annular skin of abrasion-resistant flexible material secured to said core, and an outer surface on said annular skin having depression means therein for causing said outer surface to have a tread for gripping said paper and feeding said paper when said paper is free to move and for accepting air for avoiding planing of said roller when said paper is being fed by said roller and for acting as a lubricant to permit slipping between said paper and said roller in the event said paper is held against movement and for receiving paper particles from said paper, said annular skin being capable of flexing with said core to conform to the surface of the paper against which it is pressed, and said annular skin returning to its original shape upon terminating contact with said paper for ejecting said paper particles from said depression means to thereby produce a self-cleaning action.
Claim 3
Dependent Claim
19 words
A paper feeding roller as set forth in claim 1 wherein said annular skin is coated onto said core.
Claim 4
Dependent Claim
19 words
A paper feeding roller as set forth in claim 1 wherein said core has a substantially zero Durometer reading.
Claim 5
Dependent Claim
23 words
A paper feeding roller as set forth in claim 1 wherein said core is formed of foamed resilient material having a cellular structure.
Claim 6
Dependent Claim
20 words
A paper feeding roller as set forth in claim 4 wherein said foamed resilient material is of open cell structure.
Claim 7
Dependent Claim
27 words
A paper feeding roller as set forth in claim 5 wherein said skin is coated onto said core and impregnates said open cell structure to interlock therewith.
Claim 8
Dependent Claim
29 words
A paper feeding roller as set forth in claim 6 wherein said depression means comprise the open cell contour of said core formed on the surface of said skin.
Claim 9
Dependent Claim
20 words
A paper feeding roller as set forth in claim 4 wherein said foamed resilient material is of closed cell structure.
Claim 10
Dependent Claim
28 words
A paper feeding roller as set forth in claim 1 wherein said depression means are of a size of between about 60 and 100 depressions per linear inch.
Claim 11
Dependent Claim
28 words
A paper feeding roller as set forth in claim 1 wherein said depression means are of a size of between about 10 and 100 depressions per linear inch.
Claim 12
Dependent Claim
28 words
A paper feeding roller as set forth in claim 3 wherein said depression means are of a size of between about 10 and 100 depressions per linear inch.
Claim 13
Dependent Claim
23 words
A paper feeding roller as set forth in claim 3 wherein said skin has a Durometer reading of between about 60 and 90.
Claim 14
Dependent Claim
28 words
A paper feeding roller as set forth in claim 12 wherein said depression means are of a size of between about 10 and 100 depressions per linear inch.
Claim 15
Dependent Claim
24 words
A paper feeding roller as set forth in claim 3 wherein said skin has a thickness of between about 0.005 inches and 3/32 inches.
Claim 16
Dependent Claim
23 words
A paper feeding roller as set forth in claim 14 wherein said skin has a Durometer reading of between about 60 and 90.
Claim 17
Dependent Claim
28 words
A paper feeding roller as set forth in claim 15 wherein said depression means are of a size of between about 10 and 100 depressions per linear inch.
Claim 18
Dependent Claim
23 words
A paper feeding roller as set forth in claim 10 wherein said skin has a Durometer reading of between about 60 and 90.
Claim 19
Dependent Claim
24 words
A paper feeding roller as set forth in claim 17 wherein said skin has a thickness of between about 0.005 inches and 3/32 inches.
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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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |