Method of forming an improved wiper blade

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

1988-10-28

1990-02-27

Thurlow, Jeffery

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

049044346

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 scored in the mid-section thereof to produce a score line and then cured. The scored and cured elastomer is then separated into two separate lengths of wiper blade by dividing the length of continuous elastomer along the score line.

REFERENCES:
patent: 2095119 (1937-10-01), Beal
patent: 2096347 (1937-10-01), Short
patent: 2137887 (1938-11-01), Abbott
patent: 2149002 (1939-02-01), Wermine
patent: 2218751 (1940-10-01), Humphrey
patent: 3035297 (1962-05-01), Overman et al.
patent: 3092866 (1963-04-01), Jennings et al.
patent: 3744947 (1973-07-01), Skobel
patent: 3784533 (1974-01-01), Mach
patent: 4103385 (1978-08-01), Porter
patent: 4552713 (1985-11-01), Cavicchioli

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