US4351432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor belt
Assignee: Industrie Pirelli SpA
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Filing: 1980-03-11
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Granted: 1982-09-28
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Expires: 2000-03-11
Abstract
Abstract An endless conveyor belt has an elastomeric body and a tension resistant member embedded therein. The tension resistant member comprises a plurality of spaced sets of three textile or metal cords each which extend longitudinally through the belt body and are substantially parallel to the faces of the belt. The cords are spaced from each other to outline a portion of the belt which has a substantially equalateral triangular shape in cross-section with the cords at the apices.
Inventors
- 👤 Giovanni Ballocci
- 👤 Aurelio Brollo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:06
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/02; B65; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/34; B65G15/36; B65G2201/00; B65G2201/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
A conveyor belt comprising a band of elastomeric material having opposite faces and a tension resistant structure embedded in said band between the faces and formed of a plurality of longitudinally extending cords parallel to one another, characterized by the fact that said cords are grouped in laterally spaced triangularly shaped sets of three cords each of the same kind of material disposed longitudinally through the belt substantially parallel to each other, substantially parallel to the longitudinal axis of the belt, and substantially parallel to the said opposite faces as the sole means for imparting tension resistance to the belt.
Claim 2
Dependent Claim
100 words
A conveyor belt comprising a band of elastomeric material having opposite faces and a tension resistant structure embedded in said band between the faces and formed of a plurality of longitudinally extending cords parallel to one another, characterized by the fact that said cords are grouped in laterally spaced triangularly shaped sets of three cords each of the same kind of material disposed longitudinally through the belt substantially parallel to each other, substantially parallel to the longitudinal axis of the belt, and substantially parallel to the said opposite faces as the sole means for imparting tension resistance to the belt.
Claim 3
Dependent Claim
109 words
An endless conveyor belt having an elastomeric body with opposite parallel faces and longitudinally extending embedded flexible and inextensible cords which are the sole means for imparting tension resistance to the belt, all of said cords being of the same kind of material and arranged in sets of three cords each with each set spaced farther laterally from each adjacent set than the cords of the sets are spaced from each other, said cords of each set being substantially parallel to the said faces of the belt and arranged in the belt in the shape of an equilateral triangle with each cord disposed at a vertex of the triangle.
Claim 4
Dependent Claim
109 words
An endless conveyor belt having an elastomeric body with opposite parallel faces and longitudinally extending embedded flexible and inextensible cords which are the sole means for imparting tension resistance to the belt, all of said cords being of the same kind of material and arranged in sets of three cords each with each set spaced farther laterally from each adjacent set than the cords of the sets are spaced from each other, said cords of each set being substantially parallel to the said faces of the belt and arranged in the belt in the shape of an equilateral triangle with each cord disposed at a vertex of the triangle.
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) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |