Windshield wiper with slip joint for pivoting of arm assemblies

A windshield wiper comprising:

• an elongated blade holder;
• at least one elongated rubber blade coupled with said blade holder;
• first and second elongated arm assemblies coupled with said blade holder, each arm assembly comprising at least one elongated arm having a coupling portion thereon intermediate its ends, each coupling portion having a pair of aligned oblong holes therein;
• first and second U-shaped friction plates, each friction plate deflating spaced first and second side coupling walls, each side coupling wall has an oblong hole therein, each side coupling wall has an inner and outer surface wherein the inner surfaces face one another, each side coupling wall has a peripheral flange projecting from the inner surface which extends around the oblong hole therein, said first friction plate is coupled with said first arm assembly, wherein said flanges thereof are received within the associated aligned holes, respectively, and the second friction plate is coupled with said second arm assembly, wherein said flanges thereof are received within the associated aligned holes, respectively;
• an elongated arm holder having first and second ends, each end having a pair of aligned pivot holes therein:
• first and second pivot pins, said first pivot pin passing through the holes in the first arm assembly, the first friction plate and the first end of the arm holder to secure the first arm assembly with the arm holder for both pivotal movement and swingable movement which is different from said pivotal movement, said second pivot pin passing through the holes in the second arm assembly, the second friction plate and the second end of the arm holder to secure the second arm assembly with the arm holder for both pivotal movement and swingable movement which is different from said pivotal movement.