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US 4,224,969 AGranted
Universal chuck adaptor
OwnerJac A. Plessnerinventor
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OwnerJac A. Plessnerinventor
Estimating the term…
The present invention is a universal chuck adaptor which is used in combination with a yankee screwdriver in order to mechanically couple a drill chuck to the yankee screwdriver which includes a handle. The yankee screwdriver also includes a ratchet mechanism which is mechanically coupled to the handle and a release mechanism which is mechanically coupled to the ratchet mechanism. The universal chuck adaptor includes an integral member which has a cylindrical portion at its center, a right-handed, externally threaded cylindrical portion at one end with a left-handed, internally threaded bore and a truncated cylindrical portion with a notch. The truncated cylindrical portion is adapted to be slideably received within the release mechanism and secured thereby. The drill chuck is threadedly coupled to the right-handed, externally threaded cylindrical portion. A left-handed threaded screw securely coupled the drill chuck to the universal chuck adaptor through the left-handed, internally threaded bore.
A universal chuck adaptor in combination with a yankee screwdriver in order to mechanically couple a drill chuck to the yankee screwdriver which includes:
Dependencies are inferred from the claim text.