The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 1983
Filed:
Apr. 26, 1982
Wayne J Schaaf, Kewanee, IL (US);
Bennie J Boswell, Kewanee, IL (US);
Chromalloy American Corporation, St. Louis, MO (US);
Abstract
An automatic support for folding frames such as those used in many agricultural implements. The folding frames include at least one generally horizontally disposed main frame section having at least one wing frame section hingedly connected thereto, the wing frame being movable between a lowered, outwardly extended working position wherein it is substantially coplanar with the main frame, to an upwardly folded transport position wherein it generally overlies the main frame and forms an included angle of less than 90.degree.. The automatic support includes a support arm, connecting link and pivot link all of which are pivotally interconnected with the wing frame section to form a four bar linkage arrangement. When the wing frame is in its extended working position the support arm is in close proximity to the wing frame providing the implement with a low overall profile. The four bar linkage arrangement is configured so that predetermined pivotal movement of the pivot link which also effects raising of the wing frame to its upwardly folded position, causes the support arm to move to a position which is generally vertical but outwardly inclined from the wing frame so as to permit abutment means on the support arm to engage the main frame. Thus, a substantial portion of the weight of the wing frame is distributed to the main frame through the support arm.