Operator controlled pressure applicator for the furrow forming mechanism of a seed planter
Patent 5555824 Issued on September 17, 1996. Estimated Expiration Date: 
January 31, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 31, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 381427 filed on 01/31/1995US Classes:111/62, Floating auxiliary111/61, Unitarily controlled111/69, With adjustable planter elements172/572, Spring acts to move tool vertically172/624.5With parallelogram-type linkageExaminersPrimary: Melius, Terry LeeAssistant: Batson, Victor Attorney, Agent or FirmInternational ClassA01C 005/00AbstractA mounting mechanism is disclosed for use in association with a row unit having a furrow forming apparatus as an integral part thereof. A linkage arrangement is provided for mounting the row unit to a tool bar of a tractor or the like thus allowing the furrow forming apparatus to follow the contour of the ground for consistent and efficient furrow formation. The mounting mechanism of the present invention includes a unique pressure applicator that allows for one-handed adjustment of the furrow forming mechanism on each row unit without the use of tools. The present invention is furthermore structured to facilitate adjustment of the pressure applicator along a predetermined path of travel relative to the linkage assembly that mounts the row unit to the tool bar.Field of SearchFloating auxiliaryUnitarily controlled With adjustable planter elements Spring biased Vertically manipulated Tool land ground support moved together relative to frame Linkage to tool Parallel links Spring assisted Plural tools, individually spring biased down, lifted as unit Spring assisted or spring actuator Tool spring pressed downwardly Spring biased or spring formed Rolling tool spring biased into ground contact Spring biased toward disk With spring means other than for detent Spring is for tool group horizontal angling Spring acts to move tool vertically Spring biased bars Spring biased or formed tool or tool part Plural groups movably connected to forward transverse draft bar Including adjustment for spring loading Pair or pack Adjustable Adjustable Plural coils Position or guide means Bayonet joint Lugged member, rotary engagement Plural distinct positions At least one discrete position Retainer extends through aligned recesses | |
