Patent ID: 7788994
Filing Date: 2010-09-07
Classification: B25B

Abstract:
1. A symmetrical open-end wrench for receiving fasteners having polygonal heads, said wrench having a front portion, a rear portion, a cavity and an axis of symmetry, said wrench comprising: a throat, said throat having the configuration of a “U” on the axis of symmetry, said “U” configuration having opposing relatively large internal curved corners and an internal central portion between said latter corners, said “U” configuration being modified with material being included in said opposing relatively large internal corners and said central portion of the “U” to create relatively small internal corners to improve the strength of said wrench compared to a wrench absent said included material, said central portion having a higher degree of concavity than the remainder of said throat; a pair of spaced apart jaws on opposite sides of said axis of symmetry and connected to said throat, said jaws including: