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US 6,883,808 B2Granted
Drill-chuck jaw with hard-metal inserts
AssigneeRohm Co., Ltd.
InventorsGunter Horst Rohm, Hans-Dieter Mack
Life of this patent
Estimating the term…
Abstract
A drill-chuck jaw hag an elongated metal body formed with a toothed back face and an opposite front face. The body is generally symmetrical to a longitudinal plane bisecting the back and front faces. A pair of hard-metal insert parts fixed to the front face are each formed with a projecting linear edge extending longitudinally parallel to but offset from the plane. The edges symmetrically flank the plane.
Claims17
A drill-chuck jaw comprising:
- an elongated metal body formed with a toothed back face and an opposite front face, the body being generally symmetrical to a longitudinal plane bisecting the back and front faces;
- and
- a pair of hard-metal insert parts permanently fixed to the front face and each formed with a projecting linear edge extending longitudinally parallel to but offset from the plane, the edges symmetrically flanking the plane.
A drill-chuck jaw comprising:
- an elongated metal body formed with a toothed back face and an opposite front face, the body being generally symmetrical to a longitudinal plane bisecting the back and front faces;
- and
- a pair of hard-metal insert parts fixed to the front face and each formed with a projecting linear edge extending longitudinally parallel to but offset from the plane, the edges symmetrically flanking the plane and having rounded ends.
A drill-chuck jaw comprising:
- an elongated metal body formed with a toothed back face and an opposite front face, the body being generally symmetrical to a longitudinal plane bisecting the back and front faces, the front face having a pair of planar facets extending at an obtuse angle to each other;
- and
- a pair of hard-metal insert parts fixed to the front face and each formed with a projecting linear edge extending longitudinally parallel to but offset from the plane, the edges symmetrically flanking the plane.
A drill-chuck law comprising:
- an elongated metal body formed with a toothed back face and an opposite front face, the body being generally symmetrical to a longitudinal plane bisecting the back and front faces, the front face being formed with a groove in which the insert parts are set;
- and
- a pair of hard-metal insert parts fixed to the front face and each formed with a projecting linear edge extending longitudinally parallel to but offset from the plane, the edges symmetrically flanking the plane.
A drill-chuck law comprising:
- an elongated metal body formed with a toothed back face and an opposite front face, the body being generally symmetrical to a longitudinal plane bisecting the back and front faces;
- and
- a pair of hard-metal insert parts fixed to the front face and each formed with a projecting linear edge extending longitudinally parallel to but offset from the plane, the edges symmetrically flanking the plane at a spacing of at most 0.75 mm.
Dependencies are inferred from the claim text.