Method of forming an apex filler

Details Method of forming an apex filler Method of forming an apex filler

1993-02-17

1995-02-21

Ball, Michael W.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264151, 26417717, 264175, 264285, 264295, 264310, 264DIG67, 425329, 425366, B29C 4340, B29C 4708

Patent

active

053913426

ABSTRACT:
A method is provided for forming an apex filler including extruding a substantially linear elastomeric strip having a base and a pair of sidewalls converging from the base to an apex. The sidewalls of the elastomeric strip are then engaged with a nip presented by a pair of opposed frusto-conical rollers and a base support. The rollers are rotated to work the elastomeric strip whereby the base of the strip is rotated at a first linear speed, the apex is rotated at a second, greater speed and the sidewalls are rotated at linear speeds substantially proportional to the distance from the base to the apex, thereby forming an apex filler.

REFERENCES:
patent: 2654124 (1953-10-01), Layte
patent: 4265607 (1981-05-01), Klay
patent: 4808357 (1989-02-01), Bourcier et al.

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