Patent US3661244A successfully refreshed from Google Patents.
US3661244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic circular winding and releasing belt conveyor
Assignee: Individual
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Filing: 1969-04-18
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Granted: 1972-05-09
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Expires: 1989-04-18
Abstract
Abstract A belt conveyor or the like carries the object to be forwarded on the belt surface by means of a mechanically operated pulley provided with an electric motor as a motive power. The belt conveyor prevents scattering of lightweight powder or grains due to wind at the time of their conveyance, and at the same time, it prevents water leakage due to rain and snow, and also enables a steep slope conveyance as well as an entirely new and progressive plane detour wherein the belt automatically takes the form of a cylinder as to envelop the object to be carried.
Inventors
- 👤 Masaaki Koyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:44
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/30; B65G15/32; B65G15/40; B65G2201/00; B65G2201/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
An endless belt conveyor comprising a frame having a motive pulley and a tail pulley at opposite ends thereof; a belt positioned to run over both of said pulleys, said belt comprising a flat plane section, a pair of collar sections extending at an angle from the plane of said flat section, endless reinforcing warps extending lengthwise through said collar sections, a weft padding positioned transversely within said flat section, an endless warp padding extending lengthwise within said flat section, and a plurality of circular shaped holders buried transversely within said flat section, said flat section having endless lengthwise indentations therein at the areas of junction with said collar sections; a plurality of pick-up rollers mounted on said frame to contact said collar sections to form said belt into a cylindrical cross-sectional shape; a plurality of guide rollers positioned on said frame to support said belt while being formed into said cylindrical shape; and a plurality of push rollers positioned on said frame to contact and compress said collar sections after said belt is formed into said cylindrical shape.
Claim 2
Dependent Claim
179 words
An endless belt conveyor comprising a frame having a motive pulley and a tail pulley at opposite ends thereof; a belt positioned to run over both of said pulleys, said belt comprising a flat plane section, a pair of collar sections extending at an angle from the plane of said flat section, endless reinforcing warps extending lengthwise through said collar sections, a weft padding positioned transversely within said flat section, an endless warp padding extending lengthwise within said flat section, and a plurality of circular shaped holders buried transversely within said flat section, said flat section having endless lengthwise indentations therein at the areas of junction with said collar sections; a plurality of pick-up rollers mounted on said frame to contact said collar sections to form said belt into a cylindrical cross-sectional shape; a plurality of guide rollers positioned on said frame to support said belt while being formed into said cylindrical shape; and a plurality of push rollers positioned on said frame to contact and compress said collar sections after said belt is formed into said cylindrical shape.
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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |