Power-operated torque wrench
Patent 4403663 Issued on September 13, 1983. Estimated Expiration Date: 
April 13, 2001. 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.
April 13, 2001. 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 2026400 3529513 3586115 3675514 3686983 3897834 Hydraulic wrench Torque indicator apparatus Apparatus for measuring and controlling a force Torque responsive, dual speed rotary power driver Patent #: 4300641 InventorAssigneeApplicationNo. 06/253106 filed on 04/13/1981US Classes:173/178, Having torque responsive clutch192/150, Overload release74/128Slide actuatorExaminersPrimary: Whitehead, Harold D.Assistant: Olszewski, Robert P. Attorney, Agent or FirmInternational ClassesB25B 23/14 (20060101)B25B 23/145 (20060101) B23P 19/06 (20060101) AbstractA power operated wrench having a drive shaft, said drive shaft being initially driven by a motor to provide initial torque, overriding clutch means for driving said shaft and drive means for applying a predetermined torque via the clutch and thereafter rotating said shaft an additional predetermined amount.Field of SearchWith anvil arranged to transmit torsional impact to tool | |
