Patent ID: 6044732
Filing Date: 2000-04-04
Classification: B25B

Abstract:
A plumbing tool, comprising:a shaft having opposite proximal and distal ends;a tubular first bell reducer having open proximal and distal ends;said distal end of said shaft being inserted into said proximial end of said first bell reducer;a tubular second bell reducer having open proximal and distal ends;said distal end of said first bell reducer being inserted into said proximal end of said second bell reducer;said distal end of said second bell reducer having therearound a plurality of spaced apart notches to define a plurality of spaced apart teeth around said distal end of said second bell reducer;said first bell reducer having a distal portion with a straight side wall region and an arcuate side wall region;said arcuate side wall region of said first bell reducer having an inwardly facing concave inner face and an outwardly facing convex outer face;said concave inner face and said convex outer face of said first bell reducer having coaxial radii of curvatures;said second bell reducer having a distal portion with a straight side wall region and an arcutate side wall region;said arcuate side wall region of said second bell reducer having an inwardly facing concave inner face and an outwardly facing convex outer face; andsaid concave inner face and said convex outer face of said second bell reducer having coaxial radii of curvatures;each of said notches having a depth defined in a direction parallel to said longitudinal axis of said second bell reducer, and a width defined between the adjacent teeth;each of said teeth having an outwardly facing distal edge, said distal edges of said teeth lying in a common plane with one another;each of said teeth having a length defined in a direction parallel to said longitudinal axis of said second bell reducer, and a width defined between the adjacent notches; andsaid plurality of notches including a single pair of diametric notches on said distal end of said second bell reducer, each of said notches of said pair of diametric notches having a depth greater than the depth of the remainder notches of said plurality of notches, wherein said depths of each notch of said pair of diametric notches are generally equal to one another, wherein the depths of the remainder notches of the plurality of notches are generally equal to one another.