Chucks or sockets – Socket type – Spring biased jaws
Patent
1992-12-28
1994-05-31
Bishop, Steven C.
Chucks or sockets
Socket type
Spring biased jaws
279 53, B23B 3120
Patent
active
053163249
ABSTRACT:
A collet-and-shank assembly for gripping a work piece or tool used in rotary cutting equipment. The assembly includes a dual-threaded nut that enables the machine operator to lock and release the device from a single end. The dual-threaded nut is completely recessed within the shank, thereby reducing the overall length of the assembly and increasing the available working space. In the preferred embodiment of the collet-and-shank assembly, the dual-threaded nut has an interior right-hand threading corresponding to the outside threading of a section of the collet. The exterior of the dual-threaded nut has a threading orientation opposite to that of the interior region, corresponding to the threading of an interior section of the shank. When the exterior of the dual-threaded nut is threaded into the shank and the collet is threaded into the interior of the dual-threaded nut, the collet is affixed to the shank, and the work piece or tool is also locked within the collet. Utilization of fixed inside shank and outside collet dimensions where the dual-threaded nut joins the two eliminates the need to provide a supplemental adapter when, for example, a small tool or work piece must be used in a large turret or spindle hole.
REFERENCES:
patent: 2478195 (1949-08-01), Hull
patent: 2783051 (1957-02-01), Stromme
patent: 3120961 (1964-02-01), Clarkson
patent: 4023815 (1977-05-01), Dunham
patent: 4867463 (1989-09-01), Hopf
Bishop Steven C.
Bohan Thomas L.
Caseiro Chris A.
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