Patent ID: 7634844
Filing Date: 2009-12-22
Classification: B25B,Y10T

Abstract:
1. A prewinder apparatus selectively attachable to a drive tool for installation of a helical coil insert, the prewinder apparatus comprising: an adapter member attachable to the drive tool having at least one window opening; a stop regulator having: a stop member having a flange defining a stop face, a tubular body extending from the flange having continuous external threading, and a smooth wall internal aperture extending throughout a stop member length, the external threading engageable in the threaded through aperture of the stop regulator permitting infinitely adjustable axial displacement of the stop member throughout a tubular body length by manual rotation of the stop regulator; a tubular sleeve rotatably disposed in the internal aperture and adapted to engage a drive element of the tool, the tubular sleeve including a hollow portion having a longitudinal slot; and a mandrel slidably disposed within the hollow portion of the sleeve having a threaded first end adapted to engage the helical coil insert and a second end, the second end having a transversely extending pin slidably received in the longitudinal slot, the mandrel co-rotatable with the tubular sleeve and axially displaceable until the pin contacts the stop face defining a selectable displacement of the threaded first end.