Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2011-07-19
2011-07-19
Johnson, Christina (Department: 1742)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C264S319000, C264S274000, C264S248000, C264S249000, C264S273000
Reexamination Certificate
active
07981348
ABSTRACT:
A method of making a compressible elastomeric pad from a preselected polymer material includes the steps of providing a preform including a substantially solid body having a predetermined cross-section disposed normal to a central axis of the preform and a pair of axial ends, each having a substantially flat surface disposed normal to the central axis and a central socket formed within at least one substantially flat surface. Next, providing a pair of forming plates, at least one of the pair of forming plates having a raised annular ring and an axially aligned cavity provided on one surface thereof. Then, positioning the preform between the pair of forming plates and axially aligning the exterior peripheral edge of the annular ring with a peripheral edge of a respective central socket. Finally, forming the pad and removing the pad from engagement with the pair of forming plates.
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Anderson Bradley
Marlow Jonathon
Ring Michael E.
Sprainis Ronald J.
James Ray & Assoc
Johnson Christina
Liu Xue
Wabtec Holding Corp.
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