Rapid change tool cutter and driving system
Patent 4902177 Issued on February 20, 1990. Estimated Expiration Date: 
October 27, 2008. 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 27, 2008. 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 657432 1867296 2336095 2773693 2890072 2939643 3759336 Turning Toolholder clamp for machine tools Power drawfinger system for machine tool spindle Patent #: 4303360 InventorAssigneeApplicationNo. 263418 filed on 10/27/1988US Classes:409/234, With cutter holder279/18, Transverse holder and setscrew279/48, Threaded cam sleeve408/240Clamping jawsExaminersPrimary: Bilinsky, Z. R.Attorney, Agent or FirmForeign Patent References
International ClassesB23B 031/20B23B 005/26 AbstractImprovements in tool holders in the field of machine tools; quick change connectors for replacing one tool holder with another in chucks mounted on rotary machine tool drive shafts and spindles; tool changing attachment permitting rapidly changing or switching one drilling, cutting or milling tool holder or collet for another involving removably engaging connectors employing mere operator hand force in effecting engaging or disengaging of the collets or tool holding adapters with the driving chuck; employing a coil compression spring as a locking element in tool holding apparatus between a chuck and a tool carrying collet, the spring captured in compressive engagement between bearing surfaces carried by the chuck and the collet, one such bearing surface provided in a nut threading on the chuck operable to hold and force the spring against a bearing surface on the collet.Other References
| |
