Windshield wiper with slip joint for pivoting of arm assemblies

• US 5,497,528 A
• Filed: 07/25/1995
• Issued: 03/12/1996
• Est. Priority Date: 07/25/1995
• Status: Expired due to Fees

• Current Assignee: Wu-Shuan Wu
• Original Assignee: Wu-Shuan Wu
• Inventors: Wu, Wu-Shuan
• Primary Examiner(s): Graham, Gary K.
• Application Number:
  US08/506,474
• Time in Patent Office: 231 Days
• Field of Search: 15/250.41, 15/250.46, 15/250.44, 15/250.33, 15/250.48, 15/250.31, 15/250.47, 403/24, 403/79, 403/363, 403/61, 403/82, 403/53, 403/59
• US Class Current: 15/250.46
• CPC Class Codes: B60S 1/3801 characterised by a blade support harness consisting of several articulated elements B60S1/3803, B60S1/3806 take precedence
• CPC Class Codes: B60S 2001/3815 chacterised by the joint between elements
• CPC Class Codes: B60S 2001/3822 characterised by additional means to prevent longitudinal sliding of squeegee in support, e.g. clips
• CPC Class Codes: B60S 2001/3824 the blade or squeegee pivoting about an axis parallel to blade longitudinal axis
• CPC Class Codes: B60S 2001/3837 with more than one wiping edge or lip
• CPC Class Codes: Y10T 403/32073 Pivot stud slidable in elongated opening

Abstract

A windshield wiper of the type including an arm holder, a blade holder, a rubber blade fixed to the blade holder, two symmetrical arm assemblies having a respective coupling portion in the middle respectively turned about a respective pivot at each end of the arm holder to hold the blade holder, wherein the coupling portion of each arm assembly has two vertical oblong holes aligned at two opposite sides and connected to one pivot of the arm holder; two friction plates are respectively turned about the pivots of the arm holder and connected between the arm holder and the arm assemblies and bridging the coupling portion of each arm assembly, each friction plate having two vertical oblong holes respectively connected one pivot of the arm holder and attached to the vertical oblong holes of the coupling portion of one arm assembly at two opposite sides, and two opposite inside flanges raised around the vertical oblong holes of the respective friction plate and fitted into the vertical oblong holes of the coupling portion of one arm assembly.

Claims

1. 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.