US4157752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impression surface conveyor belting and method of manufacture
Assignee: Globe International Inc
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Filing: 1978-04-06
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Granted: 1979-06-12
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Expires: 1998-04-06
Abstract
Abstract The disclosure is of impression surface conveyor belting and a method for its manufacture. The belting comprises a plurality of substantially parallel textile yarns of a specific character, integrated (in a unitary structure) with a layer of consolidated staple fibers and encapsulated in a matrix of flexible elastomer or resin. Included in the integral structure is an impression wear surface of partially isolated matrix material containing a portion of the consolidated staple fibers (a fiber bundle) which are continuously anchored in a portion of the non-isolated belting matrix. The belting of the invention is useful to manufacture non-laminated, impression surface, conveyor belts which exhibit advantageous properties of wear resistance, stability in running and structural integrity.
Inventors
- 👤 Paul J. Sick
- 👤 James W. Hazel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:25
CPC Classifications
B; B29; B29D; B29D29/00; B29D29/06; B32; B32B; B32B5/00; B32B5/02; B32B5/026; B32B27/00; B32B27/12; B32B27/36; B32B5/024; B32B5/22; B32B5/24; B32B5/26; B65; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/34; B65G15/36; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2262/00; B32B2262/02; B32B2262/0276; B32B2305/00; B32B2305/10; B32B2305/18; B32B2305/186; B32B2305/188; B32B2367/00; B32B2433/00; B32B2433/02; B65G2201/00; B65G2201/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/24479; Y10T428/24612
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
130 words
A unitary mono-layer, impression surface conveyor belting, which comprises: a plurality of substantially parallel textile yarns characterized by their high tensile strength, low stretch and uniformity of shrink; a layer of fibrous material in the form of discrete staple fibers, said layer being consolidated through entanglement of the individual fibers and integrated with said yarns by entanglement of the fibers therewith, said entanglements being of the character produced by a needling operation; and a matrix of a synthetic, non-cellular polymer substantially encapsulating the layer, individual fibers thereof and the integrated yarns; said layer and said matrix together having an impression wear surface of raised matrix material containing a portion of the consolidated staple fibers in a bundle and which are continuously anchored in a portion of the non-isolated matrix material.
Claim 2
Dependent Claim
130 words
A unitary mono-layer, impression surface conveyor belting, which comprises: a plurality of substantially parallel textile yarns characterized by their high tensile strength, low stretch and uniformity of shrink; a layer of fibrous material in the form of discrete staple fibers, said layer being consolidated through entanglement of the individual fibers and integrated with said yarns by entanglement of the fibers therewith, said entanglements being of the character produced by a needling operation; and a matrix of a synthetic, non-cellular polymer substantially encapsulating the layer, individual fibers thereof and the integrated yarns; said layer and said matrix together having an impression wear surface of raised matrix material containing a portion of the consolidated staple fibers in a bundle and which are continuously anchored in a portion of the non-isolated matrix material.
Claim 3
Dependent Claim
15 words
The belting of claim 1 wherein said yarns are incorporated as yarns in a cloth.
Claim 4
Dependent Claim
16 words
The belting of claim 2 wherein said yarns are the lengthwise yarns of a knitted cloth.
Claim 5
Dependent Claim
15 words
The belting of claim 2 wherein said yarn are lengthwise yarns in a woven cloth.
Claim 6
Dependent Claim
23 words
The belting of claim 4 wherein said layer is produced by needling a bat of staple fibers to one side of said cloth.
Claim 7
Dependent Claim
23 words
The belting of claim 4 wherein said layer is produced by needling a bat of staple fibers to each side of said cloth.
Claim 8
Dependent Claim
10 words
The belting of claim 1 wherein said yarns are polyester.
Claim 9
Dependent Claim
10 words
The belting of claim 7 wherein said fibers are polyester.
Claim 10
Dependent Claim
12 words
The belting of claim 1 wherein said polymer is an acrylonitrile-butadiene copolymer.
Claim 11
Dependent Claim
22 words
The belting of claim 1 wherein the polymer compound comprises from 50 to 500 percent by weight of the yarns and fibers.
Claim 12
Dependent Claim
10 words
A conveyor belt manufactured from the belting of claim 1.
Claim 13
Independent Claim
92 words
A method of manufacturing a non-laminated, impression surface conveyor belting, which comprises; providing a plurality of substantially parallel textile yarns characterized by their high tensile strength, low stretch and uniformity of shrink; needling to said yarns a bat of discrete staple fibers; heat setting the needled material; impregnating the heat set material with a synthetic, non-cellular, flexible solid polymer forming liquid; molding the impregnated material so as to obtain one planar surface thereof with discontinuous, raised portions of matrix encapsulating fibers of said layer; and curing the liquid to cross-link the polymer.
Claim 14
Independent Claim
92 words
A method of manufacturing a non-laminated, impression surface conveyor belting, which comprises; providing a plurality of substantially parallel textile yarns characterized by their high tensile strength, low stretch and uniformity of shrink; needling to said yarns a bat of discrete staple fibers; heat setting the needled material; impregnating the heat set material with a synthetic, non-cellular, flexible solid polymer forming liquid; molding the impregnated material so as to obtain one planar surface thereof with discontinuous, raised portions of matrix encapsulating fibers of said layer; and curing the liquid to cross-link the polymer.
Claim 15
Dependent Claim
18 words
The method of claim 12 wherein a bat of fibers is needled to each side of the yarns.
Claim 16
Dependent Claim
13 words
The method of claim 13 wherein the yarns are in a woven cloth.
Claim 17
Dependent Claim
27 words
The method of claim 12 wherein needling is on one side of the yarns and the needled fabric is then calendered to further consolidate the needled fabric.
Claim 18
Dependent Claim
19 words
The method of claim 12 wherein the yarns are held under tension while the needled material is heat set.
Claim 19
Dependent Claim
19 words
The method of claim 12 wherein impregnating is carried out by dipping the heat set material in said liquid.
Claim 20
Dependent Claim
26 words
The method of claim 12 wherein said liquid is a aqueous latex and after impregnation, the material is dried to remove a portion of the water.
Claim 21
Dependent Claim
28 words
The method of claim 12 wherein said liquid is a mixture of said resin and a liquid carrier and the liquid is evaporated from the material before curing.
Claim 22
Dependent Claim
14 words
The method of claim 12 wherein the impregnated material is dried and then cured.
Claim 23
Dependent Claim
19 words
The method of claim 12 wherein curing is effected by passing the impregnated material through a heated platen press.
Claim 24
Dependent Claim
21 words
The method of claim 12 wherein said molding is by impressing the surface of the impregnated material with an impressing platen.
Claim 25
Dependent Claim
23 words
The method of claim 22 wherein molding and curing are carried out simultaneously by passing the saturated material through a heated impressing platen.
Claim 26
Dependent Claim
19 words
The method of claim 23 wherein said passing is carried out continuously on a continuous length of impregnated material.
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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) | 1982-06-11 | 1982-12-11 | 1983-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-11 | 1986-12-11 | 1987-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-11 | 1990-12-11 | 1991-06-12 | $7700.00 | Window Closed / Lapsed |