Sifter
AssigneeStainless Equipment and Parts LLC
InventorEdward Schultz
Life of this patent
Estimating the term…
Abstract
A sifter includes a screen including a cylindrical portion. A helix is positioned within the cylindrical portion and extends between a first end of the helix and a second end of the helix. The helix defines a volume, such as an annular gap extending between the first end of the helix and a second end of the helix and extending inwardly from an inner surface of the helix by at least 25 percent of an inner diameter of the inner surface of the helix, the volume being available to receive particles sifted by the sifter. The helix may be a metal coil secured at ends thereof to a shaft driven by a motor. The screen and/or endcaps secured to the screen includes an opening through which particles that do not pass through the screen are urged by the helix.
Claims16
A sifter comprising:
- a screen including a cylindrical portion, wherein the screen further comprises a first portion secured to a first side of the cylindrical portion and a second portion secured to a second side of the cylindrical portion, the first and second portions being oriented tangent to the cylindrical portion;
- a helix positioned within the cylindrical portion and extending between a first end of the helix and a second end of the helix, the helix defining a volume extending between the first end of the helix and a second end of the helix and extending inwardly from an inner surface of the helix by at least 25 percent of an inner diameter of the inner surface of the helix, the volume being available to receive particles sifted by the sifter;
- and
- a shaft extending through the helix, the helix being mounted to the shaft, wherein the shaft defines a first opening and a second opening, the second opening being non-parallel to the first opening, a first end portion secured to the first end of the helix extending into the first opening and a second end portion secured to the second end of the helix extending into the second opening.
A sifter comprising,
- a screen including a cylindrical portion, wherein the screen defines a rim extending outwardly therefrom;
- a chute including one or more legs configured to hold the chute elevated above a support surface, the chute defining one or more projections configured to engage the rim, the screen being mounted within the chute;
- and
- a helix positioned within the cylindrical portion and extending between a first end of the helix and a second end of the helix, the helix defining a volume extending between the first end of the helix and a second end of the helix and extending inwardly from an inner surface of the helix by at least 25 percent of an inner diameter of the inner surface of the helix, the volume being available to receive particles sifted by the sifter.
Dependencies are inferred from the claim text.