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US 4,300,415 AGranted
Adjustable toggle locking closed-end wrench
OwnerTauno Sailainventor
Life of this patent
Estimating the term…
Abstract
An adjustable wrench, particularly suitable for gripping hexagonal head bolts, or hex nuts, which may be quickly adjusted to accommodate a range of bolt or nut sizes. A manually controlled, spring loaded, toggle mechanism permits the wrench to rapidly engage and disengage the bolt head during rotation about the bolt axis without having to remove the wrench from the bolt head.
Claims9
A wrench comprising:
- an elongated frame comprising a first end having a fixed jaw portion and a second end having a threaded screw-receiving opening;
- lever handle means having a link receiving aperture in a first end thereof and a screw-receiving aperture in a second end thereof;
- a threaded adjusting screw extending through said screw-receiving aperture of said lever handle means and mating with said screw-receiving opening so as to pivotally mount said second end of said lever handle means to said second end of said frame;
- a rectilinearly movable jaw member slidably mounted within said frame and disposed in opposition to said fixed jaw portion;
- an elongated link member having first and second ends;
- first connecting means pivotally coupling the first end of said link member to said link receiving aperture in said lever handle means;
- second connecting means pivotally coupling the second end of said link member to said movable jaw member;
- and
- means coupled to said link member for imparting an arcuate motion to one end thereof and thereby impart a translational movement to said movable jaw mamber.
6 more elements
Dependencies are inferred from the claim text.