Telescopic structure for a tool

Details Telescopic structure for a tool Telescopic structure for a tool

2006-08-22

2006-08-22

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S063100

Reexamination Certificate

active

07093521

ABSTRACT:
A telescopic structure for a tool, wherein the tool includes a rod assembly and a handle, a first end of the rod assembly formed with a drive end, a second end of which is formed with a connecting end serving to be connected with the handle, the telescopic structure comprises an annular positioning groove formed on outer periphery of the rod assembly; an elastic ring elastically engaged in the annular positioning groove of the rod assembly in such a manner that the elastic ring expansively abuts against inner wall of the handle; a locking groove formed on the inner wall of the handle mutually engaged with the elastic ring.

REFERENCES:
patent: 2382291 (1945-08-01), Carlberg
patent: 4581958 (1986-04-01), Shull
patent: 4586406 (1986-05-01), Howard
patent: 6431031 (2002-08-01), Hu
patent: 2004/0020331 (2004-02-01), Lee
patent: 2005/0145074 (2005-07-01), Mau
patent: 2005/0204873 (2005-09-01), Ana
patent: 2005/0284266 (2005-12-01), Lee

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