Tool holder
Patent 4714389 Issued on December 22, 1987. Estimated Expiration Date: 
October 14, 2006. 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.
October 14, 2006. 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 References3554080 InventorAssigneeApplicationNo. 06/924846 filed on 10/14/1986US Classes:409/233, And draw bar279/158, MISCELLANEOUS279/900, ADAPTED FOR AUTOMATIC TOOL CHANGER408/240Clamping jawsExaminersPrimary: Bilinsky, Z. R.Attorney, Agent or FirmInternational ClassesB23B 31/20 (20060101)B23B 31/00 (20060101) Foreign Application Priority Data1985-02-13 DEAbstractA tool holder (1) which can be inserted into the main spindle of a machine-tool is provided on the front region of its shank portion (2) with a cylindrical guide portion (11) for a tapered ring (12) which can be braced elastically and on the rear region of the shank portion (2) there is provided a second cylindrical guide portion (12) for a second tapered ring (14) which can also be braced elastically. At least one of the tapered rings (13, 14) is advantageously provided with a longitudinal slot or partial slots. A flange portion (3) is provided on the front portion which is applied against the front end face (27) of the main spindle (5) . | |
