Patent ID: 6302632
Filing Date: 2001-10-16
Classification: B25B,Y10S

Abstract:
A screw with compound recesses adapted to receive and be driven by a square type driver, cross-recess type driver and a flat-blade type driver, the screw comprising:a head comprising a top surface and a lower portion;a shank attached to the lower portion of the head;a plurality of the compound recesses formed on the top surface of the head and extending toward the lower portion of the head, the compound drive recesses comprisinga center square portion comprising a first pair of vertical walls parallel to one another, a second pair of vertical walls parallel to one another, and four corner gaps, the first and second pair of vertical walls perpendicular to one another, each adjacent ones of the vertical walls separated by one of the four corner gaps, andfour fan-shaped portions, each one of the fan-shaped portions extending outwardly from a corresponding one of the four corner gaps, and each of the four fan-shaped portions having a proximal end with a first side at the center square portion and a distal end with a second side which is wider than the first side.