Tools – Wrench – screwdriver – or driver therefor – Handle or shank
Reexamination Certificate
2006-11-28
2006-11-28
Wilson, Lee D. (Department: 3723)
Tools
Wrench, screwdriver, or driver therefor
Handle or shank
C081S180100, C081S057310, C403S324000
Reexamination Certificate
active
07140277
ABSTRACT:
An extension rod includes a polygonal recess in a first end thereof and a polygonal connection end on a second end of the rod. An axial recess is defined in the second end of the rod and communicates with an inclined passage and a receiving hole in the connection end, a bead is partially received in the receiving hole. A spring is received in the axial recess and biases an end of a pull pin which is received in the axial recess. A collar is movably mounted to the rod and has a connection pin connected thereto which is inserted in the inclined passage and engaged with an engaging notch defined in the pull pin. The pull pin is pulled toward the second end of the rod to receive the bead in a receiving recess in the pull pin to quickly release the socket.
REFERENCES:
patent: 4399722 (1983-08-01), Sardo, Jr.
patent: 4865485 (1989-09-01), Finnefrock, Sr.
patent: 5090275 (1992-02-01), McCann
patent: 5214986 (1993-06-01), Roberts
patent: 5233892 (1993-08-01), Roberts
patent: 5477434 (1995-12-01), Reed
patent: 5503048 (1996-04-01), Moon
patent: 5509333 (1996-04-01), Rion
patent: 6523441 (2003-02-01), Lee
patent: 6736034 (2004-05-01), Gonzales
patent: 6755100 (2004-06-01), Chen
Grant Alvin J.
Wilson Lee D.
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