Patent ID: 8387716
Filing Date: 2013-03-05
Classification: A01B,F16B,Y10T

Abstract:
1. A joint device for an agricultural machine, comprising: a central section including a first beam extending in a direction perpendicular to a traveling direction of the agricultural machine; at least one side section extending the agricultural machine in a lateral direction beyond the central section, the side section having a second beam for supporting soil tillage tools, one end of the second beam opposing an end of the first beam; an extension portion disposed between the opposing ends of the first beam and the second beam, said extension portion having a predetermined length and extending laterally the width of the central section, said extension portion extending in the direction perpendicular to the traveling direction of the machine, said side section being selectively positioned in a first position, in which one end of said second beam is opposed to an end of said first beam and to said extension portion and said side section extends laterally, and in a second position turned upwardly to reduce the lateral dimension of the machine for transport, and the extension portion being detachably fastened to the first beam, whereby said extension portion can be removed from said first beam while said side section is in said second position to reduce the lateral dimension of the machine, wherein an end surface of the first beam and an end surface of the extension portion that opposes the end surface of the first beam are provided with a mutually compatible form and are selectively moved into contact with each other, such that when the end surface of the extension portion engages the end surface of the extension portion, a uniform transition between the first beam and the extension portion is achieved.