US3724284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
V-belt and method of forming same
Assignee: Sveriges Forenade Trikafabriker AB
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Filing: 1971-05-17
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Granted: 1973-04-03
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Expires: 1991-05-17
Abstract
Abstract This V-belt is provided with a textile jacket covering the main body of the belt, and the textile jacket is in the form of a warp fabric knit of thermoplastic synthetic yarns. This fabric includes interconnected stitch chains forming wales in the knit fabric and is cut lengthwise, parallel to the wales into strips which are applied to the belt body with the wales extending in the longitudinal direction of the belt. The textile jacket is vulcanized to the belt body and completely surrounds the belt profile.
Inventors
- 👤 K Eng
- 👤 S Salomonsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:07
CPC Classifications
F; F16; F16G; F16G5/00; F16G5/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
A power transmission V-belt comprising an elongate belt body and a textile jacket covering said belt body, said jacket comprising a warp knit fabric having interconnected stitch chains forming wales extending longitudinally of The knit fabric, said knit fabric being heat set to control the amount of elongation thereof, said knit fabric being embedded in elastomeric material and vulcanized to said belt body, said textile jacket completely surrounding the profile of said belt body with the knit wales of said warp knit fabric extending longitudinally of and parallel with said belt body to provide sufficient stretch and recovery that said textile jacket conforms to the configuration of said belt body as the same passes around drive pulleys and the like.
Claim 2
Dependent Claim
120 words
A power transmission V-belt comprising an elongate belt body and a textile jacket covering said belt body, said jacket comprising a warp knit fabric having interconnected stitch chains forming wales extending longitudinally of The knit fabric, said knit fabric being heat set to control the amount of elongation thereof, said knit fabric being embedded in elastomeric material and vulcanized to said belt body, said textile jacket completely surrounding the profile of said belt body with the knit wales of said warp knit fabric extending longitudinally of and parallel with said belt body to provide sufficient stretch and recovery that said textile jacket conforms to the configuration of said belt body as the same passes around drive pulleys and the like.
Claim 3
Dependent Claim
19 words
A power transmission V-belt according to claim 1 wherein said textile jacket is knit of thermoplastic synthetic warp yarns.
Claim 4
Dependent Claim
22 words
A power transmission V-belt according to claim 2 wherein said warp yarns are within the range of about 40 to 120 denier.
Claim 5
Dependent Claim
17 words
A power transmission V-belt according to claim 2 wherein said thermoplastic synthetic yarns are continuous filament polyamide.
Claim 6
Dependent Claim
17 words
A power transmission V-belt according to claim 2 wherein said thermoplastic synthetic yarns are continuous filament polyester.
Claim 7
Dependent Claim
23 words
A power transmission V-belt according to claim 1 wherein said warp knit fabric is formed of two sets of thermoplastic synthetic warp yarns.
Claim 8
Dependent Claim
69 words
A power transmission V-belt according to claim 6 wherein said warp yarns of each set are knit together in stitch loops in every wale, and wherein the warp yarns of one set are lapped back and forth between immediately adjacent wales and the warp yarns of the other set are lapped back and forth between spaced wales to form relatively long laps diagonally extending across at least one wale.
Claim 9
Independent Claim
123 words
A method of forming a power transmission V-belt including an elongate belt body and a textile jacket covering the belt body, said method comprising the steps of knitting a fabric of thermoplastic synthetic warp yarns while forming wales of interconnected stitch chains extending longitudinally of the knit fabric, heat setting the knit fabric while being held under controlled tension, slitting the knit fabric along lines extending parallel to the wales of the fabric to form strips of predetermined width, applying a strip of the knit fabric to the outer profile of the belt body to completely cover the same and with the wales extending parallel to the length of the elongate belt body and vulcanizing the knit fabric jacket to the belt body.
Claim 10
Independent Claim
123 words
A method of forming a power transmission V-belt including an elongate belt body and a textile jacket covering the belt body, said method comprising the steps of knitting a fabric of thermoplastic synthetic warp yarns while forming wales of interconnected stitch chains extending longitudinally of the knit fabric, heat setting the knit fabric while being held under controlled tension, slitting the knit fabric along lines extending parallel to the wales of the fabric to form strips of predetermined width, applying a strip of the knit fabric to the outer profile of the belt body to completely cover the same and with the wales extending parallel to the length of the elongate belt body and vulcanizing the knit fabric jacket to the belt body.
Claim 11
Dependent Claim
34 words
A method according to claim 8 including the step of treating the knit fabric to improve its ability to adhere to the elastomeric material without substantially changing the flexibility characteristics of the knit fabric.
Claim 12
Dependent Claim
27 words
A method according to claim 8 including the step of impregnating the knit fabric with an elastomeric material, prior to slitting the fabric to form the strips.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |