Patent EP0084978A1 successfully refreshed from Google Patents.
EP0084978A1
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Toothed belt
Assignee: Mitsuboshi Belting Ltd
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Filing: 1983-01-26
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Granted: —
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Expires: 2003-01-26
Abstract
Abstract A drive belt (10) having an elongated body (11) provided with tensile cords (12). The belt is provided with teeth, or cogs, (13) and a two-ply reinforcement is provided on the surface of the teeth, or cogs, including an inner layer (15) and an outer layer (17). The inner layer is formed of parallel yarn, or twine, elements (16), which may be spirally wrapped to extend in the longitudinal directionof the belt. The outer layer is formed of a woven or knit cloth, and in the illustrated embodiment, is formed of a sailcloth having a highly elastic warp extending in the !ongitudinal direction of the belt and an inelastic weft for providing improved transverse rigidity and strength. The first layer yarn (16) and second layer warp (19) preferably have a ductility of greater than 50%. A number of candidate materials for the high ductility yarns is disclosed.
Inventors
- 👤 Satoshi Mashimo
- 👤 Masayuki Tanaka
- 👤 Yoshio Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 19:09
CPC Classifications
B; B29; B29D; B29D29/00; B29D29/08; F; F16; F16G; F16G1/00; F16G1/28
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
75 words
In a drive belt having an elongate belt body provided with a longitudinally extending tension member and a drive portion defined by a plurality of longitudinally spaced teeth, the improvement comprising: a first layer of elastic yarn extending spirally longitudinally of the belt body on the surface of said teeth; and a second layer of sailcloth on said first layer, said sailcloth having.an elastic warp of greater than 50% ductility extending longitudinally of the belt.
Claim 2
Dependent Claim
75 words
In a drive belt having an elongate belt body provided with a longitudinally extending tension member and a drive portion defined by a plurality of longitudinally spaced teeth, the improvement comprising: a first layer of elastic yarn extending spirally longitudinally of the belt body on the surface of said teeth; and a second layer of sailcloth on said first layer, said sailcloth having.an elastic warp of greater than 50% ductility extending longitudinally of the belt.
Claim 3
Dependent Claim
78 words
In a drive belt having an elongate belt body provided with a longitudinally extending tension member and a drive portion defined by a plurality of longitudinally spaced teeth, the improvement comprising: a first layer of elastic yarn extending spirally longitudinally of the belt body on the surface of said teeth; and a second layer of woven cloth on said first layer, said woven cloth having an elastic warp of greater than 50% ductility extending longitudinally of the belt.
Claim 4
Dependent Claim
78 words
In a drive belt having an elongate belt body provided with a longitudinally extending tension member and a drive portion defined by a plurality of longitudinally spaced teeth, the improvement comprising: a first layer of elastic yarn extending spirally longitudinally of the belt body on the surface of said teeth; and a second layer of woven cloth on said first layer, said woven cloth having an elastic warp of greater than 50% ductility extending longitudinally of the belt.
Claim 5
Dependent Claim
78 words
In a drive belt having an elongate belt body provided with a longitudinally extending tension member and a drive portion defined by a plurality of longitudinally spaced teeth, the improvement comprising: a first layer of elastic yarn extending spirally longitudinally of the belt body on the surface of said teeth; and a second layer of knitted cloth on said first layer, said knitted cloth having an elastic warp of greater than 50% ductility extending longitudinally of the belt.
Claim 6
Dependent Claim
78 words
In a drive belt having an elongate belt body provided with a longitudinally extending tension member and a drive portion defined by a plurality of longitudinally spaced teeth, the improvement comprising: a first layer of elastic yarn extending spirally longitudinally of the belt body on the surface of said teeth; and a second layer of knitted cloth on said first layer, said knitted cloth having an elastic warp of greater than 50% ductility extending longitudinally of the belt.
Claim 7
Dependent Claim
18 words
The toothed drive belt of Claims 1, 2 or 3 wherein said yarn is formed of polyamide fibers.
Claim 8
Dependent Claim
21 words
The toothed drive belt of Claims 1, 2 or 3 wherein said first layer yarn comprises a low orientation fiber yarn.
Claim 9
Dependent Claim
18 words
The toothed drive belt of Claims 1, 2 or 3 wherein said yarn is formed of elastic fibers.
Claim 10
Dependent Claim
23 words
The toothed drive belt of Claims 1, 2 or 3 wherein said first layer yarn is coated with a mixture of resorcinol-formalin-latex rubber.
Claim 11
Dependent Claim
21 words
The toothed drive belt of Claims 1, 2 or 3 wherein said second layer is defined by an inelastic weft yarn.
Claim 12
Dependent Claim
22 words
The toothed drive belt of Claims 1, 2 or 3 wherein said first layer yarn has a ductility of greater than 50%.
Claim 13
Dependent Claim
21 words
The toothed drive belt of Claims 1, 2 or 3 wherein said first layer yarn is coated with a bonding agent.
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