Patent US3664490A successfully refreshed from Google Patents.
US3664490A
Expired / Lapsed
US
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Joint reinforced conveyor belt
Assignee: Bridgestone Corp
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Filing: 1969-09-12
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Granted: 1972-05-23
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Expires: 1989-09-12
Abstract
Abstract Joint reinforced conveyor belt comprising a conveyor belt including a rubber cover and a belt core embedded therein and formed at each end with recesses and projections to be engaged with corresponding projections and recesses of another conveyor belt. Each projection has embedded therein a doubled holed link having two holes at each end. Extending through one of the holes is a joint rod, while extended through the other hole is a spindle. Cords are wound around the spindle end of all of the double holed links and extended in a lengthwise direction of the conveyor belt and embedded in the rubber cover and serve to transmit uniformly the tension applied to the belt core of the conveyor belt all over the width of the belt conveyor.
Inventors
- 👤 Hideyo Maruyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:48
CPC Classifications
F; F16; F16G; F16G3/00; B; B65; B65G; B65G17/00; B65G17/02; B65G17/30; B65G17/38; B65G17/42; B65G2201/00; B65G2201/04; Y; Y10; Y10T; Y10T24/00; Y10T24/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
A joint reinforced conveyor belt comprising a conveyor belt including a rubber cover and a belt core embedded therein, longitudinally extending recesses and projections formed at each end of the conveyor belt, links, each having a width which is substantially equal to the width of each projection, one link embedded in each projection, each link having a transverse inner and outer hole, relative to the projections, a joint rod extending through the outer holes of said links to join the ends of said belt, two spindles, one at each end of the belt extending through said inner holes cords wound about said spindles and all of said links, extending lengthwise of said belt and embedded in said cover, said links and spindles transmitting the tension of said cords wound about said spindles to said joint rod.
Claim 2
Dependent Claim
136 words
A joint reinforced conveyor belt comprising a conveyor belt including a rubber cover and a belt core embedded therein, longitudinally extending recesses and projections formed at each end of the conveyor belt, links, each having a width which is substantially equal to the width of each projection, one link embedded in each projection, each link having a transverse inner and outer hole, relative to the projections, a joint rod extending through the outer holes of said links to join the ends of said belt, two spindles, one at each end of the belt extending through said inner holes cords wound about said spindles and all of said links, extending lengthwise of said belt and embedded in said cover, said links and spindles transmitting the tension of said cords wound about said spindles to said joint rod.
Claim 3
Dependent Claim
17 words
A joint reinforced conveyor belt as claimed in claim 1 wherein said link is formed of metal.
Claim 4
Dependent Claim
32 words
A joint reinforced conveyor belt as claimed in claim 1 wherein said link is formed of a synthetic resin such as epoxy rEsin having a core made of glass fiber embedded therein.
Claim 5
Dependent Claim
20 words
A joint reinforced conveyor belt as claimed in claim 1 wherein said spindles are formed of twisted metal wire cords.
References Cited (Backward Citations)
US3368417A
Cited
FR1372099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |