Back to results
US 2011/0253602 A1Published application
Polyurethane vibratory screen
AssigneeDerrick Corporation
InventorsAnthony Lipa, James Colgrove
Life of this patent
Estimating the term…
Abstract
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, first members extending between the side edge portions and the second members extending between the lower edge portion and the upper edge portion, third members substantially parallel and extending transversely between the side edge portions and having multiple first members therebetween, the fourth members substantially parallel and extending transversely between the lower edge portion and the upper edge portion and having multiple second members therebetween, reinforcement members molded integrally with the third and fourth members.
Claims40
A vibratory screen comprising:
- a flexible molded polyurethane body having substantially parallel side edge portions at opposite ends of the body, a lower edge portion transversely disposed between the side edge portions, an upper edge portion disposed between the side edge portions and substantially parallel and opposite to the lower end portion, an upper surface, a lower surface, a first integrally molded grid structure, a second integrally molded grid structure, a third integrally molded grid structure and screen openings, wherein the first grid structure includes first and second members forming the screening openings, the first members substantially parallel and extending transversely between the side edge portions and the second members substantially parallel and extending transversely between the lower edge portion and the upper edge portion, wherein the second grid structure includes third and a fourth members, the third and fourth members having a thickness greater than the first and second members and having a portion extending downwardly below the lower surface of the body, the third members substantially parallel and extending transversely between the side edge portions and having multiple first members therebetween, the fourth members substantially parallel and extending transversely between the lower edge portion and the upper edge portion and having multiple second members therebetween, first reinforcement members molded integrally with the third and fourth members, wherein the third grid structure includes fifth and sixth members, the fifth and sixth members having a thickness greater than the third and fourth members and having a portion extending downwardly away from the lower surface of the body, the fifth members substantially parallel and extending transversely between the side edge portions and having multiple third members therebetween, the sixth members substantially parallel and extending transversely between the lower edge portion and the upper edge portion and having multiple fourth members therebetween, second reinforcement members molded integrally with the fifth and sixth members.
A vibratory screen, comprising:
- a flexible molded polyurethane body having substantially parallel side edge portions at opposite ends of the body, a lower edge portion substantially perpendicular to the side edge portions, an upper edge portion substantially perpendicular to the side edge portions and opposite the lower edge portion, an upper surface, a lower surface, first and second members forming screening openings, the first members extending between the side edge portions and the second members extending between the lower edge portion and the upper edge portion, third and fourth members having a thickness greater than the first and second members, the third members substantially parallel and extending transversely between the side edge portions and having multiple first members therebetween, the fourth members substantially parallel and extending transversely between the lower edge portion and the upper edge portion and having multiple second members therebetween, first reinforcement members molded integrally with the third and fourth members.
A vibratory screen, comprising:
- a flexible molded polyurethane body, screen openings in the body, first substantially parallel flexible members defining opposite sides of the screen openings, second substantially parallel flexible members defining opposite sides of the screen openings, the first members substantially perpendicular to the second members, third members substantially parallel and having multiple first members therebetween, fourth members substantially parallel and having multiple second members therebetween, reinforcement members molded integrally with each of the third and fourth members, side edge portions substantially parallel at opposite sides of the body between which the third members and reinforcement members therein extend, first and second end portions substantially parallel at opposite ends of the body between which the fourth members and reinforcement members therein extend, the side portions substantially perpendicular to the end portions.
A vibratory screen, comprising:
- a flexible molded polyurethane body having substantially parallel side edge portions at opposite ends of the body, a lower edge portion substantially perpendicular to the side edge portions, an upper edge portion substantially perpendicular to the side edge portions and opposite the lower edge portion, an upper surface, a lower surface, first and second members forming screening openings, the first members extending between the side edge portions and the second members extending between the lower edge portion and the upper edge portion, reinforcement members molded integrally with the first and second members.
A method of making a vibratory screen, comprising:
- creating a mold configured to fabricate the vibratory screen, the vibratory screening having a flexible molded polyurethane body;
- installing reinforcement members in the mold, the structural members configured to be molded integrally with the body;
- filling the mold with polyurethane;
- and
- forming the vibratory screen, the vibratory screen having substantially parallel side edge portions at opposite ends of the body, a lower edge portion substantially perpendicular to the side edge portions, an upper edge portion substantially perpendicular to the side edge portions and opposite the lower edge portion, an upper surface, a lower surface, first and second members forming screening openings, the first members extending between the side edge portions and the second members extending between the lower edge portion and the upper edge portion, third and fourth members having a thickness greater than the first and second members, the third members substantially parallel and extending transversely between the side edge portions and having multiple first members therebetween, the fourth members substantially parallel and extending transversely between the lower edge portion and the upper edge portion and having multiple second members therebetween, reinforcement members molded integrally with the third and fourth members.
2 more elements
Dependencies are inferred from the claim text.