Reinforced molded polyurethane vibratory screen

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4857176
SERIAL NO

07210153

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A molded polyurethane vibratory screen including a body having opposite side edge portions, upper and lower edge portions, an upper surface and a lower surface, a plurality of major and minor substantially parallel ribs extending between the upper and lower edge portions and substantially parallel to the side edge portions, dividing strips extending between the major and minor ribs to define screen openings therebetween, aramid fibers extending between the side edge portions and through the dividing strips to provide tensile strength to the dividing strips, and upper triangular cross section portions formed integrally with the major and minor ribs and extending above the upper surface of the screen to direct foreign matter laterally toward the screen openings. The dividing strips are preferably in the cross-sectional form of an inverted trapezoid, or in a form having an upper portion in the shape of an inverted trapezoid and the lower portion in the shape of a rectangle.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
DERRICK CORPORATION590 DUKE ROAD BUFFALO NY 14225

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Derrick, James W East Aurora, NY 3 239
Matsch, L Charles Buffalo, NY 1 84

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