Patent ID: 7621072

Claim:
A stackable weight for forming a modular sinker, the weight comprising: an elongated bar formed as a single piece of metal terminating at a leading end and a trailing end, said elongated bar having, a main body portion that is bounded by four essentially planar sides that form an overall substantially rectangular cross section throughout the length of said main body portion, the substantially rectangular cross section being normal to a longitudinal axis of said elongated bar, said four essentially planar sides each extending substantially parallel to said longitudinal axis, a tapered leading portion providing said leading end of said bar, said tapered portion being bounded by at least four surfaces that are inclined with respect to the longitudinal axis, each of said at least four inclined surfaces intersecting and joined to a respective one of said four essentially planar sides of said main body portion, and a substantially flat planar surface providing said trailing end of said bar, said substantially flat planar surface being normal to said four essentially planar sides of said main body portion; a fixed eye affixed at said leading end of said bar, said tapered portion of said bar being configured to provide a smooth transition between said fixed eye and said main body portion of said bar; and a link member terminating in a closed link eye and a coupling eye spaced apart from said link eye by at least one shaft, said link eye being movably attached to said fixed eye so as to provide mobility of said coupling eye with respect to said bar.