Patent ID: 7665342

Claim:
A pulling head assembly for exerting an axial pulling force on a fastener member, the fastener member extending through a work piece, the pulling head assembly comprising: a housing having a front end and a rear end, the front end and the rear end defining a first axis; a drawbolt having an upper section and a lower section, the lower section disposed within the housing, the drawbolt connected to an actuation means for axial movement of the drawbolt relative to the housing along the first axis; the upper section of the drawbolt comprising a gripping means for engaging the fastener member, the gripping means defining a second axis parallel to the first axis, the lower section comprising a guide member engagement surface; and a front plate removably attached to the front end of the of the housing, the front plate comprising a nose piece having an aperture, the axis of the aperture coinciding with the second axis, the front plate further comprising a stationary guiding member axially extending into the housing, wherein the guide member engagement surface of the drawbolt slideably engages a portion of the stationary guiding member as the drawbolt axially moves relative to the housing.