Adjustable self locking crow foot wrench
OwnerPerry L. Hendricksinventor
Life of this patent
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Abstract
An adjustable, self-locking crow foot wrench comprises a support member having a pair of movable jaws. A worm adjustment member is rotatably journaled on the support member and engages rack teeth on the jaws to adjust their spacing for different size bolts. A locking element, guided for movement between the worm adjustment member and a drive-stud-receiving recess, is movable into locking engagement with the worm adjustment member in response to insertion of a drive stud into the recess. A spring moves it out of locking engagement in response to removal of the drive stud. In a two-piece embodiment, the support member is a portion of one of the jaws; in a three-piece embodiment, it is a third part.
Claims9
An adjustable, self-locking crow foot wrench comprising:
- a support member;
- the support member having a pair of jaws mounted for relative movement to fit bolts of different sizes, a manually movable adjustment member, means to adjust the spacing between the jaws in response to movement of the adjustment member, and a drive-stud-receiving recess;
- and
- means responsive to insertion of a drive stud into the recess to lock the adjustment member against movement and thereby fix the spacing between the jaws to fit a selected size bolt.
An adjustable, self-locking crow foot wrench comprising:
- a support member;
- a pair of jaws mounted on the support member and being slidably interconnected to vary the spacing therebetween to fit bolts of different sizes;
- a manual worm adjustment member rotatably journaled on the support member and means to vary the spacing between the jaws in response to rotation of the worm adjustment member;
- a drive-stud-receiving recess in the support member;
- a locking element carried by the support member and extending between the recess and the worm adjustment member;
- and
- means responsive to insertion of a drive stud in the recess to actuate the locking element to engage the worm adjustment member and thereby lock it against rotation.
Dependencies are inferred from the claim text.