Operating means for a chuck
Patent 4386879 Issued on June 7, 1983. Estimated Expiration Date: 
April 20, 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 20, 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 2807732 3174365 3728038 Portable drill with built-in chuck key Patent #: 4324512 InventorApplicationNo. 06/255674 filed on 04/20/1981US Classes:408/241R, MISCELLANEOUS279/150, Nonseparable or built-in279/62, Conical sleeve408/240, Clamping jaws81/176.3Having relatively movable jawsExaminersPrimary: Garrett, Robert E.Assistant: Phan, Hien H. Attorney, Agent or FirmInternational ClassB25B 33/00 (20060101)AbstractAn operator for a Jacobs chuck has an annular support pivoted on the chuck collar for rocking movement about an axis perpendicular to the chuck axis, a gear tooth on the support between the pivot axis and the chuck ring gear which is selectively engageable with the ring gear teeth so that rocking the support causes the gear tooth to rotate the ring gear, and means permitting manual movement of the gear tooth into and out of engagement with the ring gear teeth. The annular support is counterbalanced so its center of mass is on the chuck axis, and a stabilizer normally maintains the support in a plane perpendicular to said axis. | |
