Method of forming an apex filler
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United States of America Patent
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Feb 21, 1995
Issued Date -
N/A
app pub date -
Feb 17, 1993
filing date -
Jan 31, 1991
priority date (Note) -
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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.
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