Pulling attachment for flexible conduit

Claim 1

An attachment for releasably joining a flexible metal conduit, of the type having a convolute inner wall surface, in which said wall surface is formed with a helical groove extending rearward from a front annular wall surface, to an eye provided in one end of a flexible cable leader of the type attachable to a fish tape, said attachment comprising an elongated, rigid one-piece body having; a. a generally circularly symmetric, rear cylindrical section having an outer cylindrical wall surface which has a raised helical rib of generally uniform cross-sectional shape, said rib being longitudinally disposed and of the proper size, shape and pitch to adapt said rear cylindrical section of said attachment to threadingly engage said helical groove of said convolute inner wall surface of said conduit, and b. a tapered, generally frusto-conically shaped front section coaxial with and joined to said rear section, said front section having i. a transversely disposed front face, ii. a longitudinally disposed slot extending rearward from said front face, said slot forming in said front section first and second laterally spaced apart jaw sections adapted to insertably receive said eye of said cable leader, and iii. at lease one transversely disposed hole through said first jaw section, said hole communicating with said slot and being adapted to lockingly receive a pin disposed through said eye of said cable leader.