Pattern rolls useful for the in-line contoured edge molding of extruded plastic products

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4938677
SERIAL NO

07250684

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A pattern roll especially adapted to form, in an in-line manner, peripheral edges of an article having substantially constant geometry and the pattern roll's method of fabrication are described. A bounded surface region is defined on at least a portion of a pattern roll's cylindrical surface by means of a number of circumferential and longitudinal (relative to the pattern roll's central axis) segments. Beveled surfaces are formed on these rib segments with the angle formed by the beveled surface of the circumferential segment being less that the angle formed by the beveled surface of the longitudinal segment. Notwithstanding this angular difference as between the beveled surfaces of the circumferential and longitudinal rib segments, when the pattern roll is then rotated in opposition to a platen roll so as to define a nip therebetween, and a molten thermoplastic is extruded into the defined nip, a plastic product having a peripheral beveled edge of substantially constant geometry will be formed.

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Patent Owner(s)

Patent OwnerAddress
ROBBINS III MR EDWARD S2802 E AVALON AVENUE MUSCLE SHOALS AL 35630

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Robbins, III Edward S 459 N. Court St., Florence, AL 35630 125 2825

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