Abstract: A windshield wiper blade construction for use in a windshield wiper assembly for motor vehicles, which comprises a T-shaped mounting portion and a triangular wiper squeegee portion including a vertically elongated rectangular cavity disposed in the center thereof, both sides thereof having projecting edges, and an elongated lip. An angle of about 12.degree. to 18.degree. is provided between a line connecting an edge of the lower elongated lip and an uppermost third edge and a center line of the elongated lip. This construction provides for efficiently wiping and cleaning the windshield and extending the operational life thereof.

Abstract: A plastic oil filter assembly comprises a closure plate having a plurality of radial supporting fins disposed on the inside surface thereof, a filter member having a saw-toothed coupling for tightly engaging with the plurality of radial supporting fins of the closure plate through a multiple-slit rubber valve, and a transparent exterior enclosure. The plastic oil filter assembly is simple in construction, inexpensive to manufacture, durable in use, and permits easy checking of the contamination level in filters of the filter member. The plastic oil filter assembly can reduce waste by permitting recycling of the used plastic filter assembly as a raw material.