Reversible socket wrench
Patent 4004666 Issued on January 25, 1977. Estimated Expiration Date: 
January 25, 1994. 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.
January 25, 1994. 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 1859600 2707540 2722149 3362267 InventorAssigneeApplicationNo. 624787 filed on 10/23/1975US Classes:192/44, Ball or roller81/59.1Ball or roller wedgeExaminersPrimary: Herrmann, Allan D.Attorney, Agent or FirmAbstractA reversible wrench has a handle integral with a ring shaped head. A reversing mechanism in the head includes a cup shaped member rotatable on a cam block carrying a tool holder. A rotatable control plate on the head has a depending pin engaged in a slot in an end wall of the cup shaped member. The cam block has an upstanding pin engaged in another slot in the end wall and contacting a leaf spring carried by the control plate. Slots in a cylindrical wall of the cup shaped member carry rollers adjacent the cam faces of the cam block. A finger grip on the control plate facilitates rotation of the control plate and rotation of the cup shaped member and rollers on the cam block to effect reversing action between the wrench head and the tool holder. | |
