Plastic film feeding machine, as used in agriculture
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United States of America Patent
Stats
-
Dec 26, 1989
Grant Date -
N/A
app pub date -
Feb 10, 1988
filing date -
Feb 17, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A machine for laying plastic film on a substrate which comprises supporting rollers (32 to 37) on which drum (16) is placed. One of the chassis wheels (6, 8) drives the drum through a transmission system (40) including a mechanical variable speed drive (60) enabling the transmission ratio between the traction wheel and the drum drive rollers to be varied. It is thereby possible to limit the tension forces exerted on the film when laying the film, making it possible to adapt the film to an uneven substrate, such as furrows or ridges on the ground in agricultural uses.
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Family
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Cited Art Landscape
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