Conveyors: power-driven – Conveyor section – Endless conveyor
Reexamination Certificate
1998-11-19
2001-05-29
Hess, Douglas (Department: 2167)
Conveyors: power-driven
Conveyor section
Endless conveyor
C198S803140, C198S867110
Reexamination Certificate
active
06237754
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an endless conveyor for tuberous agricultural products, for example, potatoes, in connection with harvesting machines. The conveyor is comprised of two or more parallel, pull-resistant, flexible belts arranged in the conveying direction and spaced apart wherein followers extending parallel to one another and perpendicularly to the belts are connected to the belts. These followers are stiff and support between them a support structure for the products to be conveyed.
In known conveyors of this kind the support structure is provided by a continuous or endless plastic band on which the material to be conveyed rests.
It is an object of the present invention to provide for the conveyor of the aforementioned kind a weight reduction and to further achieve that foreign materials, for example, soil and rocks, can fall through the conveyor so that a certain degree of separation is already provided.
SUMMARY OF THE INVENTION
As a solution to this object it is inventively suggested to provide the support structure as a web whereby the cord-like web elements forming the web are connected at their crossing points by a shear-resistant connection (fixed connection) so that a sufficient support action of the web for potatoes, etc. is provided but, on the other hand, it is ensured that undesirable foreign materials or products of smaller size will fall through the web. It is understood that such a support structure is comparatively light-weight and thus results in a weight reduction of the conveyor.
In the area of projecting followers provided by the rods, the web is preferably doubled or looped and guided about the support body of the follower. Because of this doubling or looping, the web can be fastened by clamps at the follower or by other securing means penetrating the follower. It is also possible to secure the loop of the web, respectively, its sections to one another.
Between neighboring projecting followers, the web can be supported by further rods that do not project upwardly but extend perpendicularly to the lateral belts and are connected with their ends to these belts. However, it is also possible to only partially support the web between the followers, i.e., to suspend it partially, and in certain situations with elimination of any further support location over the entire spacing between the projecting followers . The web is then only connected to these followers.
It is expedient to provide mesh openings of the web having a mesh width of 1-5 cm, preferably 1-3 cm. Transversely extending stiff rods for supporting the web can be positioned at a spacing of approximately 8-12 cm. Accordingly, the width of the mesh opening is substantially smaller than the spacing between the rods.
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Jager Sebastian
Tjabringa Heiko
ARTEMIS Kautschuk- und Kunststofftechnik GmbH & Cie
Hess Douglas
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