Method of forming an improved wiper blade

Details Method of forming an improved wiper blade Method of forming an improved wiper blade

1989-11-09

1991-01-01

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Forming continuous work followed by cutting

264148, 264151, 264157, 2641771, 26417717, 264236, 2642975, 264347, 425291, 425307, 425310, B29C 6900

Patent

active

049816373

ABSTRACT:
A method is shown for forming a wiper blade in which a continuous length of elastomer is extruded through a die having a die opening shaped to produce a pair of wiper blades joined in edge-to-edge relation. The elastomer is preformed to produce a weakened mid- section and then cured. The cured elastomer is then separated into two separate lengths of wiper blade by pulling the length of continuous elastomer along the weakened mid-section.

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