US Patent No. 10,513,014

REVERSIBLE RATCHETING TOOL WITH DUAL PAWLS


Patent No. 10,513,014
Issue Date December 24, 2019
Title Reversible Ratcheting Tool With Dual Pawls
Inventorship Alan D. Anderson, Willow Spring, NC (US)
Yongsheng Xu, Shanghai (CN)
Tsung-Hsien Shen, Taichung (TW)
Assignee APEX BRANDS, INC., Apex, NC (US)

Claim of US Patent No. 10,513,014

1. A ratcheting tool comprising:a head;
a gear ring comprising a plurality of gear ring teeth disposed about an outer circumference of the gear ring, the plurality of gear ring teeth defining a plurality of gear ring troughs with each gear ring trough being disposed adjacent to a gear ring tooth, the gear ring being disposed within the head rotatably about a vertical axis;
a first pawl disposed within the head, the first pawl comprising a plurality of first pawl teeth disposed on a first front face of the first pawl, the first pawl being biased towards the gear ring; and
a second pawl disposed within the head, the second pawl comprising a plurality of second pawl teeth on a second front face of the second pawl, the second pawl being biased towards the gear ring;
wherein the first front face of the first pawl comprises a first portion having a first characteristic curve and a second portion having a second characteristic curve, wherein the first characteristic curve is different from the second characteristic curve;
wherein the first pawl defines a first pawl rearward face extending between a first pawl upper surface and a first pawl lower surface, the first front face being concave and comprising the first characteristic curve and the second characteristic curve so that the plurality of first pawl teeth define at least one first pawl arc having a first pawl arc radius;
wherein the second pawl defines a second pawl rearward face extending between a second pawl upper surface and a second pawl lower surface, the second front face being concave so that the plurality of second pawl teeth define at least one second pawl arc having a second pawl arc radius;
wherein the first pawl and the second pawl are configured so that if the first pawl and the second pawl are disposed with the first pawl rearward face and the second pawl rearward face in vertical alignment and so that a common vertical plane bisects each of the first pawl and the second pawl, the at least one first pawl arc and the at least one second pawl arc are offset from each other in a direction in the common vertical plane and perpendicular to a vertical axis of the gear ring, with the first pawl having fewer teeth than the second pawl such that in the aligned configuration a proximal tooth and a distal tooth of the second pawl protrudes out from the respective proximal and distal teeth of the first pawl.