US4013165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyors
Assignee: A H B SERVICES ENGINEERS Ltd
•
Filing: 1975-06-05
•
Granted: 1977-03-22
•
Expires: 1995-06-05
Abstract
Abstract A conveyor of the low density type comprises two spaced-apart roller assemblies around which an endless wire is entrained to form upper and lower flights consisting of parallel spaced-apart wire lengths. Each roller assembly includes grooved discs or pulleys to support the successive lengths of wire of the flights, the pulleys being mounted on a shaft so as to be independently rotatable. A drive to one of the assemblies includes a slipping clutch to an end pulley, and the remaining pulleys are in frictional engagement so that the drive is transmitted to all the pulleys in that assembly.
Inventors
- 👤 Anthony Harry Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:00
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/30; B65G15/50; B65G2201/00; B65G2201/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
205 words
A conveyor comprising: first and second spaced-apart roller assemblies, each roller assembly including an equal number of coaxial pulleys, each of the pulleys in each said assembly being mounted so as to be capable of independent rotation at a speed differing from that of any other of the remaining pulleys of the respective said assembly; an endless wire wrapped around said roller assemblies to form upper and lower flights therebetween, each flight comprising parallel spaced-apart lengths of said wire, said wire extending between said assemblies in a manner such that a wire length extends from a given pulley in said first assembly to a pulley in said second assembly next adjacent a pulley thereof corresponding to and aligned with said given pulley in said first assembly, as viewed from one end of said assemblies; guide means for directing said wire from the last pulley in one of said assemblies to the first pulley in the other of said assemblies, as viewed from said one end of said assemblies; and drive means operatively connecting all of the pulleys of one of said assemblies for causing movement of said endless wire along said assemblies by rotation of said pulleys of said one assembly at relatively different speeds.
Claim 2
Dependent Claim
205 words
A conveyor comprising: first and second spaced-apart roller assemblies, each roller assembly including an equal number of coaxial pulleys, each of the pulleys in each said assembly being mounted so as to be capable of independent rotation at a speed differing from that of any other of the remaining pulleys of the respective said assembly; an endless wire wrapped around said roller assemblies to form upper and lower flights therebetween, each flight comprising parallel spaced-apart lengths of said wire, said wire extending between said assemblies in a manner such that a wire length extends from a given pulley in said first assembly to a pulley in said second assembly next adjacent a pulley thereof corresponding to and aligned with said given pulley in said first assembly, as viewed from one end of said assemblies; guide means for directing said wire from the last pulley in one of said assemblies to the first pulley in the other of said assemblies, as viewed from said one end of said assemblies; and drive means operatively connecting all of the pulleys of one of said assemblies for causing movement of said endless wire along said assemblies by rotation of said pulleys of said one assembly at relatively different speeds.
Claim 3
Dependent Claim
79 words
A conveyor as claimed in claim 1, wherein each said assembly further includes a shaft, said pulleys being mounted on said shaft, intervening spacers positioned between each adjacent pair of pulleys, and slip clutch means connected to at least one end of said shaft for urging said pulleys into slipping frictional engagement, said clutch means comprising a collar fixed to said shaft and a compression spring mounted about said shaft between said collar and an endmost of said pulleys.
Claim 4
Dependent Claim
27 words
A conveyor as claimed in claim 2, wherein the position of said collar on said shaft is adjustable to vary the thrust provided by said compression spring.
Claim 5
Dependent Claim
22 words
A conveyor as claimed in claim 2, wherein said drive means is drivingly connected to the shaft of one of said assemblies.
Claim 6
Dependent Claim
14 words
A conveyor as claimed in claim 1, further comprising means for tensioning said wire.
Claim 7
Dependent Claim
19 words
A conveyor as claimed in claim 5, wherein said tensioning means comprises means for resiliently urging said assemblies apart.
Claim 8
Dependent Claim
16 words
A conveyor as claimed in claim 1, wherein the pulley axes of said assemblies are parallel.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |