An agricultural implement is provided that includes a first tool bar supporting first ground engaging tools. The agricultural implement further includes a second tool bar supporting second ground engaging tools and coupled to the first tool bar by a pivot joint. Additionally, the agricultural implem
An agricultural implement is provided that includes a first tool bar supporting first ground engaging tools. The agricultural implement further includes a second tool bar supporting second ground engaging tools and coupled to the first tool bar by a pivot joint. Additionally, the agricultural implement includes a working plate secured to the first tool bar and having a joint structure partially defining the pivot joint. Furthermore, the agricultural implement includes a stress feathering plate secured between the working plate and the first tool bar and secured to both the working plate and the first tool bar, the stress feathering plate extending beyond the working plate and having a contour that provides a reduced stress gradient when the first tool bar, the working plate and the stress feathering plate are loaded by engagement of the first and second ground engaging tools with the ground.
대표청구항▼
1. A towed implement comprising: a first tool bar supporting first ground engaging tools;a second tool bar supporting second ground engaging tools and coupled to the first tool bar by a pivot joint;a working plate secured to the first tool bar and having a joint structure partially defining the pivo
1. A towed implement comprising: a first tool bar supporting first ground engaging tools;a second tool bar supporting second ground engaging tools and coupled to the first tool bar by a pivot joint;a working plate secured to the first tool bar and having a joint structure partially defining the pivot joint; anda stress feathering plate sandwiched between the working plate and the first tool bar and secured to both the working plate and the first tool bar, the stress feathering plate extending beyond the working plate and having a contour that provides a reduced stress gradient when the first tool bar, the working plate and the stress feathering plate are loaded at least in part by engagement of the first and second ground engaging tools with the ground, wherein the stress feathering plate comprises a first face in contact with the working plate and a second face in contact with the first tool bar. 2. The towed implement of claim 1, wherein the working plate and the stress feathering plate are welded to the first tool bar. 3. The towed implement of claim 1, wherein the working plate has a generally flat end on a side thereof corresponding to the contour of the stress feathering plate. 4. The towed implement of claim 1, wherein the working plate is thicker than the stress feathering plate. 5. The towed implement of claim 4, wherein working plate has a thickness of greater than 1 inch, and the stress feathering plate has a thickness less than 1 inch. 6. The towed implement of claim 5, wherein the working plate has a thickness of at least 1.5 inches, and the stress feathering plate has a thickness less than 0.5 inches. 7. The towed implement of claim 1, wherein the second tool bar comprises a second working plate and a second stress feathering plate adjacent to the pivot joint, wherein the second stress feathering plate comprises a third face in contact with the second working plate and a fourth face in contact with the second tool bar. 8. The towed implement of claim 7, wherein the second working plate is different from the working plate of the first tool bar. 9. The towed implement of claim 7, wherein the second stress feathering plate has a different shape than the stress feathering plate of the first tool bar. 10. The towed implement of claim 1, wherein working plate and the feathering plate are disposed on a fore side of the first tool bar, and wherein the first tool bar comprises a second working plate and a second stress feathering plate adjacent to the pivot joint on an aft side of the first tool bar. 11. The towed implement of claim 10, wherein the second working plate is different from the working plate of the fore side of the first tool bar. 12. The towed implement of claim 10, wherein the second stress feathering plate has a different shape than the stress feathering plate of the fore side of the first tool bar. 13. A towed implement comprising: a first tool bar supporting first ground engaging tools;a second tool bar supporting second ground engaging tools and coupled to the first tool bar by a pivot joint;a fore structure disposed on a fore side of the first tool bar, the fore structure comprising a fore working plate secured to the fore side of the first tool bar and having a joint structure partially defining the pivot joint, and a fore stress feathering plate sandwiched between the fore working plate and the fore side of the first tool bar and secured to both the fore working plate and the fore side of the first tool bar, the fore stress feathering plate extending beyond the fore working plate and having a first contour that provides a reduced stress gradient when the first tool bar, the fore working plate and the fore stress feathering plate are loaded at least in part by engagement of the first and second ground engaging tools with the ground, wherein the fore stress feathering plate comprises a first face in contact with the fore working plate and a second face in contact with the fore side of the first tool bar; andan aft structure disposed on an aft side of the first tool bar, the aft structure comprising an aft working plate secured to the aft side of the first tool bar and having a joint structure partially defining the pivot joint, and an aft stress feathering plate sandwiched between the aft working plate and the aft side of the first tool bar and secured to both the aft working plate and the aft side of the first tool bar, the aft stress feathering plate extending beyond the aft working plate and having a second contour that provides a reduced stress gradient when the first tool bar, the aft working plate and the aft stress feathering plate are loaded at least in part by engagement of the first and second ground engaging tools with the ground, wherein the stress feathering plate comprises a third face in contact with the aft working plate and a fourth face in contact with the aft side of the first tool bar. 14. The towed implement of claim 13, wherein the fore structure is different from the aft structure. 15. The towed implement of claim 14, wherein the fore working plate is different from the aft working plate. 16. The towed implement of claim 14, wherein the first contour has a different shape than the second contour. 17. A towed implement comprising: a first tool bar supporting first ground engaging tools;a second tool bar supporting second ground engaging tools and coupled to the first tool bar by a pivot joint;a first structure disposed on the first tool bar, the first structure comprising a first working plate secured to the first tool bar and having a joint structure partially defining the pivot joint, and a first stress feathering plate sandwiched between the first working plate and the first tool bar and secured to both the first working plate and the first tool bar, the first stress feathering plate extending beyond the first working plate and having a first contour that provides a reduced stress gradient when the first tool bar, the first working plate and the first stress feathering plate are loaded at least in part by engagement of the first and second ground engaging tools with the ground, wherein the first stress feathering plate comprises a first face in contact with the first working plate and a second face in contact with the first tool bar; anda second structure disposed on the second tool bar, the second structure comprising a second working plate secured to the second tool bar and having a joint structure partially defining the pivot joint, and a second stress feathering plate sandwiched between the second working plate and the second tool bar and secured to both the second working plate and the second tool bar, the second stress feathering plate extending beyond the second working plate and having a second contour that provides a reduced stress gradient when the second tool bar, the second working plate and the second stress feathering plate are loaded at least in part by engagement of the first and second ground engaging tools with the ground, wherein the second stress feathering plate comprises a third face in contact with the second working plate and a fourth face in contact with the second tool bar. 18. The towed implement of claim 17, wherein the first contour has a different shape than the second contour. 19. The towed implement of claim 18, wherein the first working plate is different from the second working plate. 20. The towed implement of claim 18, wherein the first stress feathering plate has a different shape than the second stress feathering plate.
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