Patent ID: 7568874
Filing Date: 2009-08-04
Classification: C02F,F16B,Y10S

Abstract:
1. A nut, comprising: a body having an aperture disposed within the body and a longitudinal axis; threads located within the aperture of the body; and a plurality of gripping areas disposed along a circumference of the body and completely through the body along the longitudinal axis; wherein each of the plurality of gripping areas comprises a pressure-bearing face having an angle of leverage α and a non-pressure-bearing face having an angle of leverage β; wherein the angle of leverage α is greater than the angle of leverage β; wherein the plurality of gripping areas provides visual and tactile directional signals as to the rotational direction required to attach or detach the nut to or from a threaded member; wherein the angle of leverage α is from about 30 degrees to about 90 degrees for the pressure bearing faces and the angle of leverage β is from about 10 degrees to about 60 degrees for the non-pressure bearing faces; and wherein the gripping areas include a curvature that is defined by a finger recess depth (D) that ranges from about 0.115 inches to about 0.220 inches and a conic arc, and wherein the conic arc is further defined by a RHO value of the conic arc that ranges from about 0.5 to about 0.75, an angle λ of the conic arc trailing edge that ranges from about 130 degrees to about 190 degrees, and a radius (B) of the non-pressure bearing face that ranges from about 0.3 inches to about 1.5 inches.