Method and apparatus for boring a tapered, curved I.D. tubular casting mold
Patent 4246812 Issued on January 27, 1981. Estimated Expiration Date: 
March 7, 1999. 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.
March 7, 1999. 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 2672772 3367217 3464314 3617143 3709624 3874809 Bottle boring apparatus Apparatus for forming large compound curved surfaces Patent #: 4061077 Inventor
AssigneeApplicationNo. 06/018131 filed on 03/07/1979US Classes:82/1.11, PROCESS OF TURNING408/3, WITH MEANS TO REGULATE OPERATION BY USE OF TEMPLET, TAPE, CARD, OR OTHER REPLACEABLE INFORMATION SUPPLY409/225, With work holder or guide82/1.4Tool simultaneously moving axiallyExaminersPrimary: Hinson, Harrison L.Attorney, Agent or FirmInternational ClassesB23B 5/00 (20060101)B23B 5/36 (20060101) B23Q 27/00 (20060101) AbstractA tapered and curved internal diameter is formed within a tube used as a continuous casting mold by feeding the tube lengthwise along an arc which is tangent to the axis of the spindle of a boring mill having a rotatable boring head arranged within the tube for cutting the interior wall thereof. The boring head and spindle revolve about a fixed axis, but the boring tool or cutter carried by the head is gradually moved transversely of the spindle axis while the tube is advanced along the arcuate path. Thus, the opening within the tube is tapered from one end to the other, and is also curved, wherein the tube is useful as a continuous casting mold and the like.Field of SearchTool simultaneously moving axially | |
