Dewatering box cover
AssigneeFirst Quality Tissue, LLC
InventorsTheodore D. Kennedy, Donald Kenneth Zimmerman
Life of this patent
Estimating the term…
Abstract
A dewatering box cover including a main body having a leading edge, a trailing edge opposite the leading edge, a first side edge, a second side edge opposite the first side edge, a top surface, and a bottom surface and a plurality of sets of holes formed within the main body. The holes within each set are aligned with one another along an imaginary line that is angled from 30° to 70° relative to horizontal and the holes extend downwards from the top surface of the main body towards the bottom surface of the main body at an angle of 20° to 45° relative to vertical.
Claims10
A dewatering box cover comprising:
- a main body having a leading edge, a trailing edge opposite the leading edge, a first side edge, a second side edge opposite the first side edge, a top surface, and a bottom surface, the top and bottom surfaces defining a thickness of the main body;
- and
- a plurality of sets of holes formed within the main body,
- wherein the holes within each set are aligned with one another along an imaginary line that extends through the thickness of the main body at an angle relative to horizontal of 30° to 70° and at an angle relative to vertical of 20° to 45°,
- wherein the angle relative to horizontal and the angle relative to vertical of the holes provides an open area on the top surface of the cover that provides a larger, continuous dwell distance for translating fabric moving relative to the cover as compared to a dewatering box cover with vertically-cut holes.
A method of dewatering a fabric used in a papermaking process, comprising the steps of:
- passing the fabric traveling in a machine direction over a dewatering box, wherein the dewatering box comprises a dewatering box cover, and the dewatering box cover comprises:
- a main body having a leading edge, a trailing edge opposite the leading edge, a first side edge, a second side edge opposite the first side edge, a top surface, and a bottom surface, the top and bottom surfaces defining a thickness of the main body;
- and
- a plurality of sets of holes formed within the main body,
- wherein the holes within each set are aligned with one another along an imaginary line that extends through the thickness of the main body at an angle relative to horizontal of 30° to 70° and at an angle relative to vertical of 20° to 45°, and wherein
- the dewatering box cover is positioned so that the leading edge of the dewatering box cover is upstream in the machine direction relative to the trailing edge,
- wherein the angle relative to horizontal and the angle relative to vertical of the holes provides an open area on the top surface of the cover that provides a larger, continuous dwell distance for the translating fabric moving relative to the cover as compared to a dewatering box cover with vertically-cut holes.
Dependencies are inferred from the claim text.