Patent ID: 8037569

Claim:
A wiper arm assembly, comprising: a mounting head; a wiper arm having one of an axle or a hub, said mounting head having the other of said axle or hub, said hub having a pocket with an open end for receipt of said axle for rotation therein; a spring arranged for operable attachment to said mounting head and said wiper arm; said mounting head and said wiper arm having locking surfaces configured to move into locked engagement with one another in a shipping position under a force imparted by said spring while rotating said mounting head and said wiper arm relative to one another from a disassembled position toward said shipping position, said locking surfaces confronting each other while in said shipping position and preventing said mounting head and said wiper arm from rotating back toward said disassembled position from said shipping position; wherein said axle is attached to said mounting head and one of said locking surfaces is provided by a locking member extending from said axle toward said open end of said hub while in said shipping position; and wherein said pocket extends from said open end along a pair of substantially parallel upper and lower walls spaced from one another to a seating surface and said locking surface of said locking member is fully received between said upper and lower walls and engages said lower wall when in the said shipping position to prevent rotation of said mounting head and said wiper arm back toward said disassembled position under a torque force.