Power tool
Patent 3993145 Issued on November 23, 1976. Estimated Expiration Date: 
November 23, 1993. 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.
November 23, 1993. 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 3289715 3319753 3515251 3612236 3724560 3811513 InventorAssigneeApplicationNo. 479492 filed on 06/14/1974US Classes:173/176, Drive means responsive to torque or speed condition192/150Overload releaseExaminersPrimary: Leppink, James A.Assistant: Pate, William F. Attorney, Agent or FirmForeign Application Priority Data1973-07-18 DTAbstractA power tool, particularly a power screwdriver, has a housing which accommodates a drive, and a tool holder which is rotatably mounted in the housing, together with a rotatable component that is connected with the drive to be rotated by the same. A coupling arrangement is provided, including cooperating coupling portions on the rotatable component and the tool holder, for connecting the tool holder with the rotatable component in torque-transmitting relationship, and for terminating such transmission of torque when the value of the latter exceeds a predetermined level. | |
