Magnetic bit holder and hand tool incorporating same

Details Magnetic bit holder and hand tool incorporating same Magnetic bit holder and hand tool incorporating same

1994-11-08

1996-11-26

Meislin, D.S.

Tools

Wrench, screwdriver, or driver therefor

Having work engaging and force exerting portion inserted...

81125, B25B 2300

Patent

active

055774261

ABSTRACT:
A hand tool has an elongated shank with a handle at one end and a bit holder at the other end, the bit holder including a cylindrical body having a distal end surface and an axis, the body having an axial bore formed in the end surface of non-circular transverse cross section and terminating at an inner end surface. A neodymium permanent magnet is freely received in the bore and retained against the inner end surface by a thin circular retainer, formed of metal or plastic, which is interference-fitted in the bore. Both flat, disk-like and concave, bowl-shaped retainers are disclosed. A shock-absorbing cushion may be disposed between the magnet and the inner end surface of the bore. A bit formed of magnetizable material is mateably received in a socket portion of the bore and retained in place by the magnet. The portion of the bore receiving the magnet may have a different cross section from the socket portion. The magnet may be disposed in an encapsulation which interference fits in the bore.

REFERENCES:
patent: 2806396 (1957-09-01), Miller
patent: 3007504 (1961-11-01), Clark
patent: 3165950 (1965-01-01), Gooley et al.
patent: 4663998 (1987-05-01), Parsons et al.
patent: 5199334 (1993-04-01), Vasichek et al.
patent: 5266914 (1993-11-01), Dickson et al.

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