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:
Dec. 18, 1990
Filed:
Dec. 01, 1989
James R Truax, Minneapolis, MN (US);
Other;
Abstract
A seed drill machine of the type having a plurality of disk assemblies, and a torsion spring joint for connection of the disk assemblies to the frame of the machine. The machine is conventionally mounted on a pair of wheels and the disk assemblies can be raised and lowered relative to the wheels for travel from place to place in the raised position and for ground working in the lowered position. In the lowered position, the torsion spring joint biases the disk blades in penetrating engagement with the soil to form a furrow. The torsion joints include flexible, resilient type spring elements. The disk assembly is carried by an arm connected to the joint. The spring elements are prone to develop a permanent deflection when they are left under load for a period of time. Means are provided for adjusting the angular relationship of the disk assembly arms to the connecting joints to compensate for such deformation.