Patent ID: 6666117
Filing Date: 2003-12-23
Classification: B25B

Abstract:
A wrench comprising:a rod comprising a driving portion on an end thereof for engaging with a fastener; a retainer having a first end securely engaged with the rod to move therewith and a second end; a casing comprising a compartment for accommodating the retainer, the casing comprising a retaining section defining a retaining space for retaining the second end of the retainer in place, wherein the retaining section of the compartment of the casing comprises two peg holes each having a peg anchored therein, each said peg being partially exposed in the compartment to thereby define the retaining space between exposed portions of the pegs; and means for retaining the retainer in place, the retaining means having a first end attached to the second end of the retainer and a second end retained in the retaining space; wherein when a rotational force applied to the casing is smaller than an engaging force between the retaining section of the casing and the second end of the retaining means, the retainer and the rod are turned to thereby turn the fastener; and wherein when a rotational force applied to the casing is greater than the engaging force between the retaining section of the casing and the second end of the retaining means, the casing slides while the retainer and the rod are not turned.