Patent ID: 7743686

Claim:
An automotive air brake slack check tool comprising: first and second members, each said member comprises and respective first and second handles and respective elongate first and second jaws integral with the respective handles, and means for adjustably pivotably adjustably connecting the first member with the second member, from a fully closed position to a plurality of operable positions with said jaws disposed in about parallel disposition in each said operable position, each said jaw comprises respective teeth, said jaws comprise respective inner surfaces, each said inner surface comprises teeth and an adjacent distally disposed planar surface, said first and second jaws further comprise respective distally disposed edges immediately adjacent the respective first and second planar surfaces; and in the fully closed position the first jaw edge is more proximately disposed than the second jaw edge, and the planar surfaces subtend an acute angle with the first jaw edge contactingly engaged with the second jaw planar surface in the fully closed position at the apex of the acute angle; wherein said first jaw teeth are angularly disposed and subtend an acute angle in said fully closed position, each said jaw comprises an inner side and an outer side, said inner side comprises said teeth, each respective inner and outer side being disposed in respective planes disposition, said teeth being in about facing parallel position in each said operable position, so that the jaws operably engage air brake slack adjusters and grippingly engage differently sized oppositely disposed air brake slack adjuster surfaces, whereby a sufficient force is exerted in each said operable position for each different air brake slack adjuster so that a one-person slack check is effected in each said operable position, wherein each jaw comprises a cross-section, and each cross-section comprises a width defined as the distance between oppositely disposed front and back sides and a height defined as the distance between the outer side and the inner side, and wherein the width is greater than the height.