Patent ID: 6929251

Claim:
A wire pulling system configured to pull and thread electrical wire over or through structural members of a building, comprising: a) an elongate shuttle, including a leading end and a trailing end; b) connecting means, associated with the shuttle, configured for connecting to the shuttle a wire to be pulled by the shuttle; c) an interlock device, separate from the shuttle and selectively and releasably engagable with the shuttle; and d) engaging means, associated with the shuttle and selectively and releasably engagable by the interlock device for transferring force from the interlock device to the shuttle to move the shuttle; e) wherein the engaging means includes at least one raised portion located on the shuttle, and the interlock device includes a notch, wherein the raised portion on the shuttle is configured to be selectively and releasably engaged by the notch in the interlock device; and f) wherein the at least one raised portion on the shuttle includes opposing engagement and tapered relief sections, the engagement section being substantially orthogonal to an elongate axis of the shuttle, and the tapered relief section extending taperedly toward the leading end of the shuttle.