Patent US3557939A successfully refreshed from Google Patents.
US3557939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tobacco conveyor
Assignee: Individual
•
Filing: 1969-04-03
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Granted: 1971-01-26
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Expires: 1989-04-03
Abstract
Abstract The invention consists of a tobacco conveyor adapted to elevate tobacco in a barn for curing, said conveyor including a conveyor support consisting of telescopic channel sections that are vertically adjustable by a chain drive, a supporting carriage for horizontally moving the conveyor in a confined space, and electric motors for supplying the power for all moving components.
Inventors
- 👤 Rex Lyons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:03
CPC Classifications
A; A24; A24B; A24B1/00; A24B1/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
185 words
A tobacco conveyor comprising a supporting platform mounted on wheels , means for moving said platform, a conveyor support mounted on said platform and extending upwardly therefrom, said conveyor support comprising a bottom channel member, upper and lower channel members telescoping within each other and within the bottom channel member, means for raising and lowering said upper and lower channel members with respect to each other and with respect to the bottom channel member, a horizontal drive shaft mounted adjacent the lower end of the bottom channel member, drive sprockets mounted on said drive shaft, a horizontal shaft mounted at the upper end of the upper channel member, sprocket members mounted on said upper horizontal shaft, vertical guide rods adjacent the conveyor support, a vertical screw shaft, a threaded block vertically movable on said screw shaft and guided by said guide rods, intermediate sprockets supported by said threaded block, an endless conveyor chain moving over said lower sprockets, said upper sprockets and said intermediate sprockets, and cooperating hooks mounted on said conveyor chain for receiving tobacco sticks and raising same by movement of the chain.
Claim 2
Dependent Claim
185 words
A tobacco conveyor comprising a supporting platform mounted on wheels , means for moving said platform, a conveyor support mounted on said platform and extending upwardly therefrom, said conveyor support comprising a bottom channel member, upper and lower channel members telescoping within each other and within the bottom channel member, means for raising and lowering said upper and lower channel members with respect to each other and with respect to the bottom channel member, a horizontal drive shaft mounted adjacent the lower end of the bottom channel member, drive sprockets mounted on said drive shaft, a horizontal shaft mounted at the upper end of the upper channel member, sprocket members mounted on said upper horizontal shaft, vertical guide rods adjacent the conveyor support, a vertical screw shaft, a threaded block vertically movable on said screw shaft and guided by said guide rods, intermediate sprockets supported by said threaded block, an endless conveyor chain moving over said lower sprockets, said upper sprockets and said intermediate sprockets, and cooperating hooks mounted on said conveyor chain for receiving tobacco sticks and raising same by movement of the chain.
Claim 3
Dependent Claim
36 words
A tobacco conveyor as defined in claim 1, upright standards mounted on said supporting platform, means pivotally securing said bottom channel member to said upright standards whereby the conveyor support can be tilted to horizontal position.
Claim 4
Dependent Claim
17 words
A tobacco conveyor as defined in claim 1, and an electric motor for operating said conveyor chain.
Claim 5
Dependent Claim
22 words
A tobacco conveyor as defined in claim 1, and an electric motor for raising and lowering said upper and lower channel members.
Claim 6
Dependent Claim
30 words
A tobacco conveyor as defined in claim 1, an electric motor for operating said conveyor chain and an electric motor for raising and lowering said upper and lower channel members.
References Cited (Backward Citations)
US2774461A
Cited
US3283856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |