Cutter wheel for tillage apparatus
Patent 4469185 Issued on September 4, 1984. Estimated Expiration Date: 
September 4, 2001. 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.
September 4, 2001. 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 References 1644596 2559996 3268259 3319365 3419976 3519309 3570566 3663063 3737199 Replaceable insert for agricultural disc InventorsAssigneeApplicationNo. 06/256643 filed on 04/23/1981US Classes:172/540, Tool has circumferentially spaced teeth, tines, blades or the like172/120, Disk or planar cutter (e.g., saw, etc.)175/426, Insert299/39.9, And having rotatable cutting element37/94Transverse axisExaminersPrimary: Johnson, Richard J.International ClassesA01B 33/00 (20060101)A01B 33/10 (20060101) A01C 5/00 (20060101) A01C 5/06 (20060101) AbstractAn improved cutter wheel that is particularly useful with tilling apparatus for sod seeding purposes. The cutter wheel is mounted for rotation by a drive structure that includes a drive shaft. The cutter wheel includes a central disk portion with an outer periphery defining a plurality of equally spaced slots, each for receiving a tip-holding insert. A bullet-shaped tungsten carbide tip is soldered or brazed to the tip-holder and the holder is welded to the disk. The disk periphery is shaped to allow cutting clearance for the tip, to protect the tip from breaking off, and to provide rear support for the tip-holder. The angle at which the tip is connected to the holder is chosen so that the brazed or soldered joint is loaded primarily in compression as the wheel cuts through the soil. | |
