Parallel jaw toggle wrench
OwnerDonald J. Finninventor
Life of this patent
Estimating the term…
Abstract
A toggle wrench having a first jaw fixed to a handle. A sliding jaw is slidable toward and away from the fixed jaw. The jaws have parallel pressure surfaces disposed at an angle of 30 degrees with respect to the elongation of the handle. A link is pivoted to the forward end of the lever and has a forward end pivotally attached to the sliding jaw. A carrier is positionable along the handle by a manually controllable threaded adjustment assembly mounted on the rearward end of the handle. The lever is pivotally attached to the carrier rearwardly of the forward link. A movement of the rearward end of the link toward the fixed jaw side of the handle, which causes forward movement of the link for toggle-pressing the sliding jaw toward the fixed jaw. The carrier holds the lever and link in alignment with the handle.
Claims10
A toggle wrench comprising:
- a fixed jaw;
- an elongated handle extending rearwardly from said fixed jaw and attached thereto, said handle having spaced right and left connected sidewalls;
- said handle having a lower closed side and an opposite upper side adjacent said fixed jaw;
- a sliding jaw below said fixed jaw, said jaws having forwardly extending pressure surfaces;
- a track system mounted on said handle and having right and left tracks mounted on said right and left sidewalls respectively and elongated transversely of said pressure surfaces, said sliding jaw being guided by said tracks;
- an elongated rearwardly extending hand lever having a forward portion movable between said sidewalls and a rearward portion protruding from said sidewalls on the upper side of said handle;
- a link having a forward end pivotally attached to a rearward portion of said sliding jaw in a manner for the pivoting of said link about a forward axis, the forward end of said lever being pivotally secured to the rearward end of said link for rotation about an intermediate axis, said link being free of any direct pivotal connection to said handle;
- a carrier elongated in parallelism with said handle and disposed between its said sidewalls;
- means pivotally attaching said lever to said carrier for pivoting about a rearward axis rearwardly of said intermediate axis, said axes being parallel to each other and also being normal to the elongation of said handle;
- coacting pin and slot connection means on said carrier and said forward end of the link whereby said forward end of the link is movable fore and aft relative to said carrier;
- and
- a threaded assembly mounted on the rearward end of said handle and having a manually rotatable adjustment portion movable fore and aft of said handle in response to threaded rotation thereof, said adjustment portion and carrier having coacting engagement surfaces such that forward threading movement of said adjustment portion forces said carrier to move forward toward said sliding jaw, said sliding jaw, link, lever, and carrier together defining an interconnected assembly, resilient means operably correlated with said interconnected assembly and said handle for urging said sliding jaw away from said fixed jaw, the forward end of said hand lever moving upwardly in response to downward pivotal movement of a rearward end of said lever about said rearward axis, thereby moving said intermediate axis toward a line between said forward and rearward axes and moving said forward end of said link forwardly relative to said carrier and thereby forcing said movable jaw toward said fixed jaw against the urging of said resilient means.
Dependencies are inferred from the claim text.