Patent ID: 8973471
Filing Date: 2015-03-10
Classification: B25B

Abstract:
1. A three-protuberance open-end wrench configured for use with a threaded member, the three-protuberance open-end wrench comprising: a head section, the head section including a first jaw and a second jaw, a throat being formed between the first jaw and the second jaw for receiving the threaded member therein, the first jaw has a first planar surface and the second jaw has a second planar surface, the first planar surface and the second planar surface communicating with the throat, each planar surface of the first planar surface and the second planar surface including a holding face, at least one recess, and at least one protuberance, the at least one recess extending below the planar surface away from the throat and the at least one protuberance extending above the planar surface, the first planar surface of the first jaw is parallel with the second planar surface of the second jaw; the at least one protuberance consisting of three protuberances being two first protuberances located on the first jaw and a second protuberance located on the second jaw, the two first protuberances protruding outwardly from the first planar surface of the first jaw toward the second jaw, each of the two first protuberances has a first holding point being spaced apart from the holding face of the first jaw, the second protuberance protruding outwardly from the second planar face of the second jaw toward the first jaw and having a second holding point being spaced apart from the holding face of the second jaw, a central bisector is a line extending perpendicular from the first jaw toward the second jaw in a position centered between the two first protuberances, the second protuberance is located between the two first protuberances, a center of the second protuberance is offset from and not aligned with the central bisector of the two first protuberances of the first jaw, the threaded member having a first lateral side and a second lateral side being respectively held by the protuberances of the first jaw and the second jaw.