Flat fold implement frame

专利名称：Flat fold implement frame发明人：David R. Smith申请号：US06/431008申请日：19820930公开号：US04512416A公开日：19850423

摘要：The normally horizontal frame of a wheeled farm implement, such as used fortillage purposes, has a center section at the ends of which are hinged a pair of wingsections that are fully foldable into overlying, substantially parallel relationship to thecenter section through use of hydraulic cylinder assemblies. At each hinge a pair of links,pivotally connected to corresponding hinge straps, have a common pivotal connection attheir upper ends with the piston rod of the cylinder. A pintle- receiving slot, strategicallylocated in the wing section hinge strap not only permits limited rise and fall of the wingsection over uneven terrain but causes smooth swinging movements of the wing sectionsto and from their folded conditions. Entirely eliminated is free falling of the wing sectionsbecause of constant control by the hydraulic assemblies made possible by abutment atall times of the spring- loaded pintles against one end of the slots. Such constructioncompletely avoids jolting and jarring of the frame parts and other implement

components during folding and unfolding operations, thereby preventing damage to theimplement and injury to the operator.

申请人：HESSTON CORPORATION

代理机构：Schmidt, Johnson, Hovey & Williams

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