Patent ID: 8056446
Filing Date: 2011-11-15
Classification: B25B

Abstract:
1. An adjustable ratcheting open ended wrench comprising a primary handle having a top end forming an upper stationary jaw element having a jaw face, a bottom end providing an elongate handle grip portion, a linear roller bearing guide slot arranged perpendicularly to the upper stationary jaw element jaw face, and a connecting rod pin guide slot arranged parallel to the linear roller bearing guide slot, a lower movable jaw assembly having a top and a bottom, a jaw face forming the top disposed to oppose and compliment the upper jaw element jaw face, a flat contact surface on the bottom, and a linear roller bearing, having at least one race and a plurality of rollers, wherein the linear roller bearing rollers engage the linear roller bearing guide slot of the primary handle, a spring secured between the primary handle and the lower movable jaw assembly being arranged to spring bias the lower movable jaw assembly jaw face towards the upper stationary jaw element jaw face providing a normally closed jaws configuration, a secondary handle having a thickness, top and bottom ends, a cam shaped binding surface forming the top end and an elongate handle grip portion forming the bottom end, and being fastened by means of a first pivotal fastener to the primary handle in a scissor fashion with the secondary handle elongate handle grip portion opposing the primary handle elongate handle grip portion and arranged such that the cam shaped binding surface may selectively engage the lower movable jaw assembly flat contact surface, a tertiary handle having top and bottom ends, an elongate handle portion forming the bottom end, and at least one gear element forming the top end, being pivotally attached to the primary handle near the tertiary handle top end by means of a second pivot fastener, and, a first connecting rod having a longitudinal length, a top end, and a bottom end formed as a transfer gear disposed to engage the tertiary handle gear element, the rod further being pivotally fixed, by means of a third pivot fastener near the transfer gear, to the primary handle, the rod top end having a longitudinally oriented guide slot pivotally and perpendicularly engaging a first connecting rod pin, the pin being secured to the lower movable jaw assembly and retained by the connecting rod pin guide slot in the primary handle, whereby the tertiary handle is operable to open the normally closed jaw faces and the secondary handle is operable to clamp the lower movable jaw assembly in place and grip a workpiece presented between the jaws.