If that is the case, lift the wiper arm slightly off the galss, usually when it is straight, then pull it straight off by pulling on the part of the arm that is on the shaft, not the arm. On mine there are two 2.5mm hex head set screws that lock the wiper arm to the splined shaft.

Beside above, how does a wiper motor park? The output of the gear reduction operates a linkage that moves the wipers back and forth. The circuit maintains power to the wipers until they are parked at the bottom of the windshield, then cuts the power to the motor. This circuit also parks the wipers between wipes when they are on their intermittent setting.

Similarly one may ask, do boats have windshield wipers?

Even boats have windshield wipers. Note: a boat fits on a ship. Aluminum fishing boat that has them.

What is a pantograph wiper arm?

Pantograph wiper arms are typically used on windshields that are taller than they are wide — like tugs, fishing vessels, transit buses, etc. They have two parallel struts and move the wiper blade from side to side. They are structurally strong - to handle large wiper blades, and require larger, more powerful motors.