Wrench
AssigneeKing Lugger Inc.
InventorTeng Hsien Kuo
Life of this patent
Estimating the term…
Abstract
A wrench includes a handle, a first jaw block pivotally connected a head of the handle, a second jaw block movably connected to the first jaw block to define a variable clamp space between them, and a rotating unit mounted on the first jaw block for adjusting an openness of the clamp space. When using the wrench to tighten or loosen a hex bolt to a certain degree, a user needs only to pull the handle in a direction opposite to that in which a force is applied on the handle to tighten or loosen the hex bolt, so that the clamp space on the first jaw block is caused to instantaneously slip and turn relative to the clamped hex bolt, allowing the user to apply a force on the handle again without the need of repeatedly removing and replacing the wrench from and onto the hex bolt.
Claims4
A wrench, comprising:
- a handle having an expanded head portion formed into two spaced and parallel plates, said plates having a clearance defined therebetween;
- a first jaw block pivotally connected to said expanded head portion to allow said first jaw block to move in and partially move out of the clearance;
- a second jaw block movably connected to said first jaw block, said first and said second jaw blocks having a variable clamp space defined therebetween;
- a rotating unit mounted onto said first jaw block for translating said second jaw block relative to said first jaw block, so as to adjust a size of the clamp space;
- and
- a slip stopper provided in said two plates, and being movable between two different positions to selectively allow and prohibit said first jaw block to pivotally turn in and out of the clearance;
- wherein a rear end of said two plates is provided with an axially extended long slip hole, a longitudinal side of the slip hole being provided with a recess for receiving a spring and a ball therein, a region near a front corner of said two plates being provided with a shaft hole for a pivot shaft to extend therethrough that pivotally connects said first jaw block to said expanded head portion, and a region near another front corner of said two plates being provided with a locating hole.
Dependencies are inferred from the claim text.