US3556286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endless belt conveyor
Assignee: Kuraray Co Ltd
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Filing: 1969-05-14
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Granted: 1971-01-19
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Expires: 1989-05-14
Abstract
Abstract An endless belt conveyor having guide members secured to the underside of the belt, the guide members engaging stationary guide rails, the guide rails having a downwardly inclined portion at the inlet end of the conveyor, and guide plates engaging the longitudinal edges of the belt to fold the edges of the belt upwardly whereby the guide rails and the guide plates cooperates to change the planar belt to a U-shaped trough configuration adjacent the inlet end of the conveyor.
Inventors
- 👤 Ryunosuke Naito
- 👤 Sakan Komatsu
- 👤 Saburo Yamane
- 👤 Yoshiro Higashiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:13
CPC Classifications
B; B65; B65G; B65G21/00; B65G21/20; B65G21/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
A belt conveyor comprising an endless conveyor belt disposed around a pair of terminal rollers, the terminal roller disposed at the inlet end of the conveyor belt being disposed above the terminal roller at the discharge end of the conveyor belt, a plurality of guide members disposed beneath and secured to said conveyor belt inwardly from the longitudinal edges thereof, guide rails means engaging said guide members along the upper pass of said conveyor belt, said guide rail means including a downwardly inclined section adjacent the terminal roller at the inlet end of said conveyor belt and a generally horizontal section extending to the discharge end of said conveyor belt, and a pair of guide plates being inclined downwardly and towards each other disposed in the region of the downwardly inclined guide rails and engaging the longitudinal edges of said conveyor belt to fold said longitudinal edges upwardly with respect to the transverse central portion of said conveyor belt to deform said conveyor belt into a substantially U-shaped trough configuration.
Claim 2
Dependent Claim
170 words
A belt conveyor comprising an endless conveyor belt disposed around a pair of terminal rollers, the terminal roller disposed at the inlet end of the conveyor belt being disposed above the terminal roller at the discharge end of the conveyor belt, a plurality of guide members disposed beneath and secured to said conveyor belt inwardly from the longitudinal edges thereof, guide rails means engaging said guide members along the upper pass of said conveyor belt, said guide rail means including a downwardly inclined section adjacent the terminal roller at the inlet end of said conveyor belt and a generally horizontal section extending to the discharge end of said conveyor belt, and a pair of guide plates being inclined downwardly and towards each other disposed in the region of the downwardly inclined guide rails and engaging the longitudinal edges of said conveyor belt to fold said longitudinal edges upwardly with respect to the transverse central portion of said conveyor belt to deform said conveyor belt into a substantially U-shaped trough configuration.
Claim 3
Dependent Claim
19 words
A conveyor according to claim 1, further comprising driving belt means secured to the underside of said conveyor belt.
Claim 4
Dependent Claim
17 words
A conveyor according to claim 2, wherein said driving belt means comprise a pair of endless V-belts.
Claim 5
Dependent Claim
36 words
A conveyor according to claim 2, wherein said guide members include a plurality of transversely disposed stays, and rotatable guide rollers secured at the ends of said stays and positioned to engage said guide rails means.
Claim 6
Dependent Claim
55 words
A conveyor according to claim 1, further comprising guide means disposed at the discharge end of said conveyor belt and engaging the longitudinal edges of said conveyor belt to flatten said conveyor belt from the U-shaped trough configuration to a substantially planar configuration at the terminal roller at the discharge end of said conveyor belt.
Claim 7
Dependent Claim
110 words
A conveyor according to claim 1, further comprising a plurality of transverse stays secured to the underside of the transverse central portion of said conveyor belt, and a pair of endless V-belts disposed beneath and secured to said stays, a plurality of guide rollers secured to lugs provided at the ends of said stays and positioned to engage said guide rail means, and guide means disposed at the discharge end of said conveyor belt and engaging the longitudinal edges of said conveyor belt to flatten said conveyor belt from the U-shaped trough configuration to a substantially planar configuration at the terminal roller at the discharge end of said conveyor 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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |