Patent attributes
A connecting device may include first and second connecting elements that are axially oppositely coupled to each other so as to be rotatable relative to each other, and a retainer member that is arranged and constructed to clamp the first and second connecting elements. The second connecting element has a plurality of radially projected portions and a plurality of radially depressed portions that are respectively formed in a circumferential end surface thereof. The retainer member has a first retainer portion, a second retainer portion, a plurality of fixing portions and a plurality of supplemental retainer portions. The supplemental retainer portions are arranged and constructed to be axially supported by a support die of a crimping machine when the end peripheries of the fixing portions are crimped while the second retainer portion is axially supported by the support die.
