Compressing feed screw

Claim 1

In a refuse vehicle a compressing feed screw which comprises a tubular shaft and a helical screw blade secured thereto which is particularly intended for feeding in and compressing refuse in a refuse container, said screw blade comprising at least two portions, an inlet portion and an outlet portion, which are separated from each other by a gap, said gap extending from the outer periphery of the screw blade to the tubular shaft proper so that a gap is formed in the joint between the tubular shaft and the respective portions of the screw blade and wherein the end of the outlet end portion of the screw blade which is located nearest to the gap has a smaller radial height than the remainder of said portion of the screw blade.

Claim 4

An apparatus for feeding in and compacting a compressible material, such as refuse, in a container comprising a feed screw including a central rotatable shaft and a screw blade secured thereto and having a substantially triangular recess in its circumferential edge, a trough-like duct having a bottom portion which substantially conforms to at least a portion of the contour of the screw blade, said screw blade being positioned in said duct, and at least one substantially helical ridge having substantially the same extension in the circumferential direction of the screw blade as said recess provided in said duct and projecting in the direction toward the circumferential edge of said screw blade for disintegrating bigger objects advanced by said screw blade in cooperation therewith.

Claim 5

An apparatus for feeding in and compacting a compressible material, such as refuse, in a container comprising a feed screw including a central rotatable shaft and a screw blade secured thereto and having a substantially triangular recess in its circumferential edge, a trough-like duct having a bottom portion which substantially conforms to at least a portion of the contour of the screw blade, said screw blade being positioned in said duct, and at least one substantially helical ridge having substantially the same extension in the circumferential direction of the screw blade as said recess provided in said duct and projecting in the direction toward the circumferential edge of said screw blade for disintegrating bigger objects advanced by said screw blade in cooperation therewith.