Patent ID: 9162729
Filing Date: 2015-10-20
Classification: B62M,Y10T

Abstract:
1. A bicycle right crank arm assembly comprising: a right crank arm including a body portion and at least two coupling arms that are integral with said body portion, and each of the at least two coupling arms includes an elongated, radially extending portion, the right crank arm further including a first crank arm contact element that extends circumferentially from said elongated, radially extending portion of a first one of said at least two coupling arms, said first crank arm contact element defined at a first radial distance and extending along an arc of circumference having a predetermined angular extension of less than 360°, a circumferential gap is defined between said first crank arm contact element and a second one of said at least two coupling arms at a radial distance which is at least equal to the first radial distance, a first annular element, of a first predetermined size, having at least one first coupling portion directly coupled with at least one of said at least two coupling arms, said first annular element including at least one first annular element contact element that is dimensioned to mate with said first crank arm contact element, and at least one second annular element, of a smaller size than the predetermined size of said first annular element, coupled with said crank arm, wherein said first annular element comprises a toothing that extends radially towards the outside along a primitive circumference having a predetermined diameter, wherein said at least one first coupling portion is entirely contained in a first area extending radially towards the outside starting from an ideal circumference having a diameter at least equal to ⅔of said predetermined diameter.