Patent Number: 6,305,252

Title: Torque enhancing wrench

Abstract: A wrench includes a handle having a head and having an enclosed peripheralwall formed in the head for forming an orifice in the head and forreceiving a fastener to be driven by the head. The head includes a pair ofopposite cusps extended inward of the orifice and each formed by a pair ofinclined surfaces. One of the cusps and the opposite surface may be usedto drive the fastener in an active or a reverse direction. The fastenermay be rotated relative to the head when the fastener is disengaged fromthe cusps and the surfaces, without being disengaged from the head.

Inventors: Hsu; Shin Jong (San Marino, CA)


International Classification:

Expiration Date: 10/23/2013