Windshield wiper assembly

A windshield wiper assembly for use with a motor drive unit comprising:

• a wiper arm;
• an elongated bushing member fixedly mounted relative to said wiper arm and having a central bore;
• a shaft extending through and guided in said bore;
• a driven unit coupled to one end of said shaft and to said wiper arm;
• a drive member integrally formed on a portion of the other end of said shaft and extending radially outward therefrom, said drive member being coupled to said motor drive unit;
• said shaft and said drive member being formed of plastic material;
• said other end portion including a circumferential flange having an upper surface engaging a bottom surface of said bushing;
• said bushing including a downwardly extending hook-shaped portion, said hook-shaped portion and said bottom surface cooperatively restraining axial movement of said shaft relative to said bushing;
• said flange including a notch, said notch being of such dimensions and positioned on said flange such that said integrally formed drive member and shaft are assembled with said bushing by positioning said notch over said hook-shaped portion, by moving said shaft into said bushing until said flange upper surface engages said bushing bottom surface, and by rotating said integrally formed drive member and shaft relative to said bushing such that said hook-shaped portion engages said flange bottom surface.