Patent US3750864A successfully refreshed from Google Patents.
US3750864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material conveyors
Assignee: Individual
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Filing: 1972-01-04
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Granted: 1973-08-07
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Expires: 1992-01-04
Abstract
Abstract Conveyors having deep side walls secured to a base belt, the side walls and the base belt all being flexible and made, for example, from rubber or plastic materials. The side walls are corrugated and the corrugations are substantially rectangular in cross-section. Furthermore, the corrugations are divided into a set comprising, for example, two fan-shaped corrugations that are joined together and onto which are connected a further interconnecting corrugation, the latter also being fan-shaped but in an opposite orientation to the fan shape of the firstmentioned corrugations. The interconnecting corrugation has at least an approximately constant height (referring to its crosssection) on its outer surface up to an edge strip that connects each side wall to the base belt and also has a base merging curvilinearly to the outside. The curvature of this base flattens out to zero with respect to the edge strip from its outer to the inner edge.
Inventors
- 👤 G Nolte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:08
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/42; B65G2201/00; B65G2201/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
185 words
In a conveyor made from flexible material having two corrugated side walls which are secured in spaced-apart relationship by means of a longitudinally extending edge strip to a base belt, the improvement which consists in that the side wall corrugations have crests of substantially rectangular crosssection and consist of interconnected portions each of which comprise at least two corrugations that diverge to a fan shape, viewed from a lateral face, to the edge thereof remote from said base belt, together forming a trapezium, the crest height of each of the divergent corrugations as measured perpendicular to the side walls decreasing from the inner edge of said edge strip, and a connecting corrugation which diverges to the shape of a trapezium from said remote edge towards said base belt, said connecting corrugation having at least an approximately constant crest height of its outer surface as measured perpendicular to the side walls up to said edge strip and a base merging curvilinearly to the outside, the curvature of which base flattens out to zero with respect to said edge strip from its outer to the inner edge.
Claim 2
Dependent Claim
185 words
In a conveyor made from flexible material having two corrugated side walls which are secured in spaced-apart relationship by means of a longitudinally extending edge strip to a base belt, the improvement which consists in that the side wall corrugations have crests of substantially rectangular crosssection and consist of interconnected portions each of which comprise at least two corrugations that diverge to a fan shape, viewed from a lateral face, to the edge thereof remote from said base belt, together forming a trapezium, the crest height of each of the divergent corrugations as measured perpendicular to the side walls decreasing from the inner edge of said edge strip, and a connecting corrugation which diverges to the shape of a trapezium from said remote edge towards said base belt, said connecting corrugation having at least an approximately constant crest height of its outer surface as measured perpendicular to the side walls up to said edge strip and a base merging curvilinearly to the outside, the curvature of which base flattens out to zero with respect to said edge strip from its outer to the inner edge.
Claim 3
Dependent Claim
31 words
A conveyor according to claim 1, wherein said outer surface of said connecting corrugation is curved from said remote edge to said edge curvature, becoming increasingly more pronounced towards the inside.
Claim 4
Dependent Claim
24 words
A conveyor according to claim 1, wherein the thicknesses of the walls of said corrugations decrease from said remote edge to said edge strip.
Claim 5
Dependent Claim
25 words
A conveyor according to claim 1, wherein the surfaces of said connecting corrugations form means for attachment of wall members extending between said side walls.
Claim 6
Dependent Claim
44 words
A conveyor according to claim 4, wherein transverse wall members are connected to selected opposed pairs of said connecting corrugations across said base belt, said transverse walls being inclined forwardly, in the direction of travel of said conveyor, with respect to said base belt.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |