Conveyors: power-driven – Conveyor section – Endless conveyor
Patent
1985-02-21
1987-04-14
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Endless conveyor
198813, 198856, B65G 4300
Patent
active
046571310
ABSTRACT:
A tension regulator for a chain drive has a sensor positioned and attached adjacent the chain, preferably to chain guides for the chain which allow some free play for the chain, a logical switching unit connected to the sensor which signals when the chain configuration changes, particularly when the distance from the sensor to the chain changes, and a tension control connected to the logical switching unit. The logical switching unit signals and controls the tension control of the chain drive so that the chain tension is maintained at a preset value. Preferably the tension control comprises a telescoping cylinder about which the chain is mounted and an apparatus which extends or retracts the telescoping cylinder thus controlling chain tension. The sensor is preferably an electrical source which provides an oscillating, directed magnetic field. A plurality of these sensors may be mounted adjacent the chain to measure chain twisting, chain breaking and the relationship of individual chain strands to one another.
REFERENCES:
patent: 3226702 (1965-12-01), Zawels
patent: 3923151 (1975-12-01), Weber
patent: 3963115 (1976-06-01), Teske et al.
patent: 4037876 (1977-07-01), Georg et al.
patent: 4167803 (1979-09-01), Teichmann
patent: 4437619 (1984-03-01), Cary et al.
patent: 4440097 (1984-04-01), Teske
patent: 4508205 (1985-04-01), Aulagner et al.
Brychta Peter
Wiechers Klaus-Peter
Bergwerksverband GmbH
Dayoan D. Glenn
Dubno Herbert
Ross Karl F.
Valenza Joseph E.
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