Patent ID: 7996952

Claim:
A wiper arm assembly having a disassembled position, an assembled position, a service-up position and a shipping position, said assembled position being between said shipping position and said service-up position and said shipping position being between said disassembled position and said assembled position, comprising: a mounting head having an axle or said mounting head having one end configured for attachment to a vehicle and an opposite end having a first locking surface extending therefrom; a wiper arm having a hub comprising an open pocket for receipt of said axle for rotation therein, and having opposite sidewalls spaced from one another by a channel extending between said sidewalls with a second locking surface extending laterally outwardly from at least one of said sidewalls externally to said channel; a spring configured for operable attachment to said mounting head and said wiper arm; and said locking surface on said wiper arm being configured for engagement with said locking surface on said mounting head under a force imparted by said spring while rotating said mounting head relative to said wiper arm from said 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.