Patent ID: 9186778
Filing Date: 2015-11-17
Classification: B25B

Abstract:
1. A simple open-end wrench comprising: a driving head including first and second jaws and a space delimited therebetween for receiving an object to be driven by the open-end wrench, first and second recesses extended from the space, a pawl pivotally embedded in the first recess and having a first end thereof defining a joining end abutted against a peripheral wall of the first recess and a second end thereof defining an abutting end interacting with the object to be driven, and a biasing mechanism received in the second recess and abutted against the pawl, wherein the pawl includes the abutting end disposed outside the second recess and extended into the space, wherein the pawl is pivotal to a position with the abutting end thereof disposed within the second recess, wherein the biasing mechanism includes a biasing member, wherein the biasing member has a first end restrained in the second recess and a second end engaged with the pawl, and wherein the pawl includes a notch inset therein receiving the second end of the biasing member.