Dynamometric tightening apparatus
Patent 4562746 Issued on January 7, 1986. Estimated Expiration Date: 
March 19, 2004. 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 19, 2004. 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 3619612 Torque measuring apparatus Electronically indicating torque wrench Patent #: 4244434 InventorAssigneeApplicationNo. 06/591334 filed on 03/19/1984US Classes:73/862.23With detection of specific torque value or condition (e.g., peak torque)ExaminersPrimary: Ruehl, Charles A.Attorney, Agent or FirmInternational ClassesB25B 23/142 (20060101)B25B 23/14 (20060101) Foreign Application Priority Data1983-03-17 FRAbstractAn apparatus displays the torque reached by a tightening tool on a case which is independent from the tool proper. For this purpose, the tool has diodes for transmitting infrared radiation, for example, while the case has diodes for receiving this radiation. In this way, the tool may be employed in any position while the case is placed in a visible region and displays the value of the torque applied to the part to be tightened.Other References
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