Pneumatically self-clearing chuck
Patent 5580197 Issued on December 3, 1996. Estimated Expiration Date: 
March 28, 2015. 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 28, 2015. 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 ReferencesHammer drill chuck Hammer drill chuck Keyless tool chuck Selftightening drill chuck Chuck mount Electric hammer drill having dust collecting device Tool chuck Drill chuck Patent #: 5286041 InventorApplicationNo. 411520 filed on 03/28/1995US Classes:408/240, Clamping jaws279/61, Threaded sleeve and jaw279/62, Conical sleeve279/157, Protection means; e.g., cover, seal, overstress prevention, air blast408/56WITH MEANS TO APPLY TRANSIENT, FLUENT MEDIUM TO WORK OR PRODUCTExaminersPrimary: Rachuba, M.Assistant: Tsai, Henry W. H. Attorney, Agent or FirmInternational ClassB23B 031/12Foreign Application Priority Data1994-04-02 DEAbstractThe chuck is used with a drill drive unit having a spindle extending along and rotatable about an axis. The chuck has a chuck body fixed on the spindle and formed with an axially forwardly open tool recess on the axis, a plurality of angularly spaced and angled guide holes opening into the recess and having inner surfaces, and a respective grit-clearing passage opening at a respective front end into each of the guide holes axially rear-ward of the recess. Respective jaws displaceable in the guide holes have outer surfaces riding on the inner surfaces of the respective guide holes and have front ends in the recess. An adjustment sleeve is rotatable about the axis on the body and interengaging formations on the sleeve and on the jaws displace the jaws radially on rotation of the sleeve about the axis.Field of SearchThreaded sleeve and jawProtection means; e.g., cover, seal, overstress prevention, air blast KEYLESS TYPE SOCKET WITH MEANS TO APPLY TRANSIENT, FLUENT MEDIUM TO WORK OR PRODUCT WITH PRODUCT HANDLING OR RECEIVING MEANS MEANS TO DRIVE TOOL Clamping jaws Cleansing fluid pump operated by drive Pump comprises hammer head or impact transmitting anvil Cleansing fluid controlled by control for drive or advance causing or controlling means Cleansing fluid passage through hammer head Drive motor or advance causing or controlling motor provided with passage for cleansing fluid | |
