Patent ID: 8286321

Claim:
A method of constructing a wiper arm assembly, comprising the steps of: providing a mounting head having a pair of laterally spaced sidewalls with bottom surfaces and an axle extending between said sidewalls, each of said sidewalls having one of a notch extending upwardly into said bottom surfaces or an arm extending laterally inwardly toward the other of said sidewalls; providing a wiper arm having a hub with a pair of laterally spaced sidewalls with bottom surfaces and a pocket with an open end for receipt of said axle for rotation therein, said hub having the other of said notches or said arms, when having said notches, said notches extending upwardly into said bottom surfaces of said hub sidewalls and when having said arms, said arms extending laterally outwardly from said hub sidewalls; providing a spring configured for operable attachment to said mounting head and said wiper arm; and providing said notches and said arms with locking surfaces; and rotating said mounting head relative to said wiper arm in one direction from a disassembled position toward a shipping position and bringing said locking surfaces of said notches and said arms into engagement with one another in said shipping position under a force imparted by said spring, said locking surfaces confronting each other while in said shipping position and preventing said mounting head and said wiper arm from being rotatable under an applied torque force in a direction opposite said one direction back toward said disassembled position from said shipping position.