Patent ID: 7963218

Claim:
A screw press for compressing a combination of solid and liquid matter, the screw press comprising: a rotatable longitudinally extending shaft having a proximal end and a distal end; screw threads concentrically positioned and affixed around said shaft and extending a substantial portion along the length of said shaft, the rotation of said shaft and threads conveying material from the proximal end of said shaft to the distal end of said shaft; a motor for rotating said shaft and said screw threads; a housing for encasing a substantial portion of said shaft and screw threads, said housing including an inlet located for the introduction of material to said screw threads and an outlet for the discharge of liquids, said outlet being a screen positioned at said distal end of said shaft, the rotation of said screw threads causing material to be conveyed from the proximal end of said shaft to the distal end of said shaft to compress material against said screen to discharge fluids through said screen; a first support means for supporting said shaft at its proximal end; and a second support means for supporting said shaft, said second support means located within said housing proximal and substantially adjacent to said screen, said second support means including one of more replaceable annularly shaped low friction wear bearings made of plastic which engage and support said screw threads to support said shaft.