Harvesters – Motorized harvester – Having driven means for handling or treating crop
Reexamination Certificate
2000-04-05
2001-10-30
Pezzuto, Robert E. (Department: 3671)
Harvesters
Motorized harvester
Having driven means for handling or treating crop
C056S011600
Reexamination Certificate
active
06308504
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is related to and claims priority, under 35 U.S.C. §119, from French Patent Application No. 99 04927, the entire contents of which is hereby incorporated by reference herein.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention generally relates to a treatment device for treating cut fodder and to a mower employing the treatment device.
2. Discussion of the Background
A mower-conditioner includes a treatment device for treating cut fodder. Broadly speaking, the treatment device includes a treatment rotor, which can rotate about an axis of rotation, and a driving device for driving the rotor. Such a treatment device is known and is sold under the manufacturer's designation KUHN FC 300. The driving device includes a drive member and a transmission device. The transmission device includes:
a first wheel mounted on an output shaft of the drive member;
a second wheel mounted on the first end of the treatment rotor;
endless transmission members wound around the first wheel and the second wheel; and
a regulating or adjusting mechanism for regulating or adjusting the tension in the endless transmission members.
The regulating or adjusting mechanism, for regulating or adjusting the tension in the endless transmission members, includes an additional wheel against which the transmission members rest. This additional wheel is connected to an arm via a first connection being of a pivot type. The arm is connected to a support structure via a second connection of the pivot type. The arm can be pivoted about the second connection via a screw-nut system so as to allow the tension in the transmission members to be adjusted. In order to keep the additional wheel in the desired position of adjustment, a spring, which acts on the nut of the screw-nut system, is also provided.
Therefore, a conventional regulating or adjusting mechanism of this kind, for regulating or adjusting the tension in transmission member, is relatively expensive and complicated.
SUMMARY OF THE INVENTION
The object of the present invention is to improve and simplify the above-described conventional drive device, while at the same time making sure that the result obtained is economical.
To this end, the treatment device for treating cut fodder of the present invention is one wherein the regulating or adjusting mechanism for regulating or adjusting the tension in the endless transmission member includes a first bearing and a second wheel, both of which can be moved away from the first wheel, and means which allow the first bearing and the second wheel to be kept in the desired position of adjustment.
The present invention also relates to the following features taken in isolation or in any technically feasible combination:
retaining means for retaining the first bearing and the second wheel in the desired position of adjustment by immobilizing the first bearing and the second wheel;
the first support includes a carrier member to which the first bearing is connected via an articulation, the axis of which is approximately parallel to the axis of rotation of the treatment rotor;
the articulation connecting the first bearing to the carrier member is of the elastic type;
the retaining means for retaining the first bearing and the second wheel in the desired position of adjustment include a tensioning member which acts on the first bearing;
the tensioning member acts approximately following a straight line passing through an axis of rotation of the first wheel and an axis of rotation of the second wheel;
the tensioning member is a telescopic strut;
the telescopic strut includes two threads of opposite pitch;
the second bearing is of the spherical-type;
the second support includes a carrier member to which the second bearing is connected via an elastic connection.
The present invention also relates to a mower including at least one cutting mechanism and at least one treatment device for treating the fodder cut by the cutting mechanism, wherein the treatment device exhibits one or more of the above features.
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Walch Martin
Wattron Bernard
Kuhn S.A.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Pezzuto Robert E.
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