Non-inflation adapter for prompt engagement with a shank of...

Details Non-inflation adapter for prompt engagement with a shank of... Non-inflation adapter for prompt engagement with a shank of...

2005-10-11

2005-10-11

Banks, Derris H. (Department: 3722)

Chucks or sockets

Socket type

Radially reciprocating jaws

C279S155000, C279S906000, C081S177850

Reexamination Certificate

active

06953196

ABSTRACT:
An adapter for prompt engagement a shank of screw driver with a handle includes a tubular adapter connected with a handle, a polygonal central bore having a reduced bottom, a concaved front outer periphery to define a shoulder thereunder, a plurality of conical through holes around a middle peripheral wall for respectively disposing a plurality of steel balls, a conical spring disposed into the central bore having a large thick upper portion blocking the conical through holes and a small incompact lower portion fixed in the reduced bottom, an annular sleeve with an annular convex on middle inner periphery slidably wrapped on the adapter biased by a circular spring on the shoulder, an annular cap fixed on the top of the adapter with a circular ring engaged therebetween, a receiving space for receiving the steel balls and a polygonal shank of in the bore is held by the steel balls.

REFERENCES:
patent: 3658351 (1972-04-01), Benjamin et al.
patent: 3788658 (1974-01-01), Benjamin et al.
patent: 5062749 (1991-11-01), Sheets
patent: 5222956 (1993-06-01), Waldron
patent: 5398946 (1995-03-01), Quiring
patent: 6199872 (2001-03-01), Hasan
patent: 6270085 (2001-08-01), Chen et al.
patent: 6325393 (2001-12-01), Chen et al.
patent: 6637755 (2003-10-01), Chen et al.
patent: 2004/0026878 (2004-02-01), Chen et al.
patent: 2004/0164503 (2004-08-01), Fan-Chiang et al.

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