Machine element or mechanism – Gearing – Toothed gear and recirculated unconnected elements
Patent
1976-09-03
1977-10-04
Gerin, Leonard H.
Machine element or mechanism
Gearing
Toothed gear and recirculated unconnected elements
742421FP, 7424211R, 7424213A, F16H 718, F16H 712, F16H 710
Patent
active
040517420
ABSTRACT:
An automatic-tensioning arrangement for roller driven belts of a cellular plastic forming machine is described. Sensor means are provided for detecting lateral movement of the belts on the support or drive rollers thereof and for generating a control signal in response thereto. The control signal from the sensor means is applied to a hydraulic tensioning device which displaces the drive rollers longitudinally of the belts to automatically tension the belts in response to detected lateral belt movement. A hydraulic tensioning device is provided for each end of each drive roller so the respective ends can be moved separately from one another. Accordingly, by selective movement of the respective ends of the rollers the belts can be guided back to normal desired position in response to a control signal from the respective sensor means.
REFERENCES:
patent: 2526033 (1950-10-01), Lyon
patent: 3159268 (1964-12-01), Dyke
patent: 3545599 (1970-12-01), Smith et al.
patent: 3702131 (1972-11-01), Stokes et al.
patent: 3789552 (1974-02-01), Bradbury et al.
patent: 3861230 (1975-01-01), Brovoll
Johansson Jan-Olof
Spacek Karel
Gerin Leonard H.
Gullfiber AB
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