A tribologically modified polyoxymethylene polymer composition is disclosed. The polyoxymethylene polymer composition is comprised of a polyoxymethylene polymer in combination with a tribological modifier system. The tribological modifier system may include the combination of a fluoropolymer with a high density polyethylene, such as an oxidized high density polyethylene. The particular formulation provides a synergistic blend of properties. For instance, the polymer composition not only has an excellent surface appearance when molded into articles but has excellent low friction characteristics when tested against aluminum.

Belt edge modules for constructing modular conveyor belts with sturdy outer edges. The edge modules have thickened outer edge regions in module edge portions that are difficult to snip or break off to access hinge rods.

A spiral conveyor having a self-stacking conveyor belt positively driven on a helical path up or down a drive drum. Stacker supports at opposite sides of the belt support the tiers above. Locking structure on the outer stacker supports interlock consecutive tiers. Drive members on the drive drum have a belt entrance segment and a positive-drive segment. The positive-drive segment has ridges that engage the inner side of the belt without slip. The entrance segment provides a smooth reduction in drum diameter without drive ridges to multiple belt tiers entering the helical path.

A spiral conveyor having a self-stacking conveyor belt positively driven on a helical path up or down a drive drum. Stacker supports at opposite sides of the belt support the tiers above. Locking structure on the outer stacker supports interlock consecutive tiers. Drive members on the drive drum have a belt entrance segment and a positive-drive segment. The positive-drive segment has ridges that engage the inner side of the belt without slip. The entrance segment provides a smooth reduction in drum diameter without drive ridges to multiple belt tiers entering the helical path.

A conveyor belt includes a plurality of modules arranged in succession and articulated with each other. First and second projections of the modules have mating profiles to allow the insertion of a connecting pin between adjacent modules. Each module includes housings for respective rolling balls projecting through a respective circular opening. The ratio between the diameter of at least one circumferential portion of the housing and the diameter of the respective rolling ball is between 0.8 and 0.6, while at least part of a rib is provided below, near the lower surface, with at least one respective projecting portion arranged for snap-fit insertion of the rolling ball into the respective housing seat.

A vertical washer or dryer, such as integrated into an egg handling operation. The vertical washer or dryer includes a vertically extending body supporting a carousel conveyor adapted to support pluralities of eggs during transport in successive ascending and descending fashion within the body between an inlet location and an outlet location of the body. A first egg conveyor communicates the eggs with the inlet location of the carousel conveyor, a second egg conveyor communicating the eggs with the outlet location. A least one of a plurality of egg washer spray bars or, in the separate variant, a plurality of egg dryer air knives, are integrated into the body in communication with the carousel conveyor for washing/drying the eggs while supported upon the carousel conveyor.

A vertical washer or dryer, such as integrated into an egg handling operation. The vertical washer or dryer includes a vertically extending body supporting a carousel conveyor adapted to support pluralities of eggs during transport in successive ascending and descending fashion within the body between an inlet location and an outlet location of the body. A first egg conveyor communicates the eggs with the inlet location of the carousel conveyor, a second egg conveyor communicating the eggs with the outlet location. A least one of a plurality of egg washer spray bars or, in the separate variant, a plurality of egg dryer air knives, are integrated into the body in communication with the carousel conveyor for washing/drying the eggs while supported upon the carousel conveyor.

A link for a chain for an article conveyor includes first and second link elements formed as coupleable separate parts. The first link element may be configured to support articles, and the second link element may be adapted to support the first link element and to allow the chain to be moved when in use. The link includes a hinging region in the second link element for hinging the link to a further link of the chain. The hinging region may be adapted to the insertion within it of a hinging element for hinging the link to another link of the chain. The link includes confining means provided in the first link element and adapted, when the first and second link elements are coupled, to confine the hinging element within the hinging region, thereby preventing the hinging element to escape from the hinging region.

A conveyor chain includes a first flight including a first side portion having a first aperture, a first flight bar, and a first sprocket-engaging portion. The conveyor chain also includes a second flight including a second side portion having a second aperture, a second flight bar, and a second sprocket-engaging portion. The conveyor chain further includes a connecting pin having a first end portion received within the first aperture and a second end portion received within the second aperture. The connecting pin couples the first and second flights together. The first sprocket-engaging portion is positioned laterally outwardly of the first end portion of the connecting pin and the second sprocket-engaging portion is positioned laterally outwardly of the second end portion of the connecting pin.

A conveyor chain includes a first flight including a first side portion having a first aperture, a first flight bar, and a first sprocket-engaging portion. The conveyor chain also includes a second flight including a second side portion having a second aperture, a second flight bar, and a second sprocket-engaging portion. The conveyor chain further includes a connecting pin having a first end portion received within the first aperture and a second end portion received within the second aperture. The connecting pin couples the first and second flights together. The first sprocket-engaging portion is positioned laterally outwardly of the first end portion of the connecting pin and the second sprocket-engaging portion is positioned laterally outwardly of the second end portion of the connecting pin.