Test fixture for the aging of wiper blades in a laboratory

Details Test fixture for the aging of wiper blades in a laboratory Test fixture for the aging of wiper blades in a laboratory

2007-07-03

2007-07-03

Williams, Hezron (Department: 2856)

Measuring and testing

Testing by imparting motion

C073S007000, C073S009000, C073S865800

Reexamination Certificate

active

11236134

ABSTRACT:
A test fixture facilitates the laboratory testing of windshield wiper blades for vehicles. The test fixture includes a base frame on which are mounted a number of windshield wiper arms oriented generally parallel for engagement with a stainless steel test surface. Positionally adjustable supports are mounted on the base frame to configure the test surface by varying the curvature of the test surface, as well as the overall length thereof, to permit simulation of a large variety of automotive windshields for test purposes. The test fixture also includes a wiper arm mounting device that can be manipulated to vary the wiper arm load to the wiper blade on the test surface. Adjustments in the spring force exerted on the wiper blade allow variances in the application of a biasing force on the wiper blade in conjunction with changes in the attack angle.

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