Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1998-07-23
2000-02-22
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
81125, B25B 2308
Patent
active
060267178
ABSTRACT:
A hand-held driving tool includes an elongate handle which defines a tool axis and is suitably shaped and dimensioned to be graspable within the hand of the user. The driving tool may be in the form of a fixed, precision or other drivers in which the driver members, such as flat blade and Phillips screwdriver tips are mounted at one axial of the handle. The handle defines a driver axis generally coaxially aligned with the tool axis. At least one permanent magnet is provided on the handle, the magnet being formed of a magnetized material having north and south poles defining a magnetic axis generally arranged on the handle to permit selective placement of a magnetizable element at at least one position along the magnetic axis at a predetermined distance from one of the poles to magnetize the element and placement of the element a distance greater than such predetermined distance of the other of the poles to demagnetize the element. The magnetic axis is either aligned with or offset from the driver axis. In this way, a magnetizable element may be magnetized by positioning same adjacent to one of the poles and demagnetized by positioning the magnetizable element adjacent the other of the poles. The magnets used have an energy product equal to at least 7.0.times.10.sup.6 gauss-oersteds. Although the magnets may be embedded within the handle, the magnets may be oriented in relation to the surfaces of the handle or a hole within the handle to facilitate placement of the part to be magnetized very closely to the magnetizing pole and somewhat more distantly positioned in relation to the demagnetizing pole.
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