Tap wrench
OwnerLeonard Holtzinventor
Life of this patent
Estimating the term…
Abstract
A tap wrench comprising a handle portion and a chuck is provided with a joint arrangement that allows for axial misalignment of the handle portion and the chuck. The joint comprises a stem that extends from the chuck and provides four planar pins equidistantly spaced thereabout which slidably engage four slots equidistantly spaced about a central opening defined in the handle portion. The stem is retained within the central opening by the engagement of each pin in a respective slot. Oscillation of the stem within the central opening provides for the above-noted axial misalignment.
Claims15
A joint usable for tools in which two or more tool members may be misaligned, said joint comprising
- a body member having an axially extending cylindrical opening in a first end thereof, said cylindrical opening being defined by a cylindrical wall having four slots equidistantly spaced therearound;
- and
- a stem member comprising a cylindrically shaped shank having four pins projecting therefrom, said pins being equidistantly spaced about said shank such that all pins lie in one plane that is oriented substantially perpendicular to the longitudinal axis of said shank, said stem member being disposed within said cylindrical opening of said body member such that each of said pins is slidably retained within one of said slots, and such that a gap spaces non-pin portions of said stem member from inner surfaces of said cylindrical wall, wherein said stem member is moveable relative to said body member.
A tap wrench comprising:
- a body member providing handle means for applying torque to said body member, said body member having an axially extending cylindrical opening in a first end thereof, said cylindrical opening being defined by a cylindrical wall having four slots equidistantly spaced therearound;
- collet means for operatively retaining a tap, said collet means having expandable jaw members with a tap retained therein at a first end of said collet means and said collet means having a cylindrically shaped shank extending from a second end thereof, said shank having four pins projecting therefrom, with each of said pins being equidistantly spaced about said shank such that all pins lie in one plane that is oriented substantially perpendicular to the longitudinal axis of said shank, said shank being disposed within said cylindrical opening of said body member such that each of said pins is slidably retained within one of said slots, and such that a gap spaces non-pin portions of said shank from inner surfaces of said cylindrical wall, wherein said collet means is moveable relative to said body member in a manner permitting axial misalignment of said collet means and said body member.
A tap wrench as set forth in claim 13, wherein each of said slots extends lengthwise along an axis which is parallel to the longitudinal axis of the body member, said lengthwise extension of each slot being greater than the diameter of said circular pins and wherein said slots are configured with a width that is slightly larger than the diameter of said pins.
Dependencies are inferred from the claim text.