Wiper arm assembly having a locking catch

A wiper arm assembly, comprising:

• a mounting head having one of an axle or a hub, said hub comprising an open pocket for receipt of said axle for rotation therein, 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 the other of said axle or hub and having opposite sidewalls with a second locking surface extending laterally outwardly from at least one of said sidewalls;
• a spring configured for operable attachment to said mounting head and said wiper arm;
• 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 a disassembled position toward a 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;
• and
• wherein said mounting head has a pair of said first locking surfaces spaced laterally from one another and said wiper arm has a pair of said second locking surfaces spaced laterally from one another.

A wiper arm assembly, comprising:

• a mounting head having one of an axle or a hub, said hub comprising an open pocket for receipt of said axle for rotation therein, 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 the other of said axle or hub and having opposite sidewalls with a second locking surface extending laterally outwardly from at least one of said sidewalls;
• a spring configured for operable attachment to said mounting head and said wiper arm;
• 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 a disassembled position toward a 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;
• and
• wherein said mounting head has opposite sidewalls extending to said opposite end having said first locking surface, said first locking surface being provided by a recess extending into at least one of said mounting head sidewalls.

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 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 snapping 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 wherein said axle is substantially removed from said pocket toward said shipping position wherein said axle is received in said pocket, 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 under an externally applied rotational force.