US3593840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor belt for hot material
Assignee: Dana Inc
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Filing: 1969-04-23
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Granted: 1971-07-20
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Expires: 1989-04-23
Abstract
Abstract A belt for conveying hot material, comprising a laminated carcass of rubberized fabric and an enclosing cover consisting of thin layers of rubber interleaved and bonded together with fabric plies and thus presenting a plurality of contiguous interfaces all at different depths within the cover itself tending to distribute areas of blister separation where they have the effect of heat-insulating the carcass of the belting.
Inventors
- 👤 Nathan E Guyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:19
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/38; B65G2201/00; B65G2201/04; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
85 words
A belt for conveying hot material, comprising a laminated carcass of rubberized fabric, and a laminated cover on at least one side of the carcass, the cover comprising a plurality of alternating thin layers of two kinds, one kind of layer being a thin skimmed material comprising an open mesh fabric coated with a layer of first rubberlike material, and the other kind of layer being a solid layer of second rubberlike heat-resistant elastomer, the first material and the second elastomer having different tensile strengths.
Claim 2
Dependent Claim
85 words
A belt for conveying hot material, comprising a laminated carcass of rubberized fabric, and a laminated cover on at least one side of the carcass, the cover comprising a plurality of alternating thin layers of two kinds, one kind of layer being a thin skimmed material comprising an open mesh fabric coated with a layer of first rubberlike material, and the other kind of layer being a solid layer of second rubberlike heat-resistant elastomer, the first material and the second elastomer having different tensile strengths.
Claim 3
Dependent Claim
15 words
The belt of claim 1, in which the open mesh fabric is a leno-type weave.
Claim 4
Dependent Claim
24 words
The belt of claim 1, in which said one kind of layer has a total thickness lying within the range 0.025 to 0.030 inch.
Claim 5
Dependent Claim
19 words
The belt of claim 1, in which the layer of second heat-resistant rubberlike elastomer is approximately 0.051 inch thick.
Claim 6
Dependent Claim
16 words
The belt of claim 1, in which the fabric is made of fibers of organic plastics.
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) | 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 |