Tool holder
Patent 5118231 Issued on June 2, 1992. Estimated Expiration Date: 
May 3, 2011. 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.
May 3, 2011. 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 ReferencesMachine tool Tool holder for machine tool Patent #: 5009555 InventorApplicationNo. 709507 filed on 05/03/1991US Classes:409/232, With cutter holder408/239R, With tool-retaining means409/234With cutter holderExaminersPrimary: Howell, Daniel W.Attorney, Agent or FirmForeign Patent References
International ClassB23B 031/00AbstractAn improved tool holder having a body with means for connecting the tool holder to a numerical controlled machine or universal milling and boring machine and for driving the tool holder and means by which machine tools can be connected to the tool holder. The tool holder body is of malleable and ductile aluminum with an exterior coating of no less than 60 rockwell hardness.Other References
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