A driven roller for use in roller conveyors comprises a cylindrical load-engaging shell provided with a cap in one of its axial ends. The cap has an axial bore which accommodates the sleeve of a driving portion rotatable by a pulley or gear. The sleeve carries one or more spring-biased balls which normally extend into sockets provided in the cap to thus rotate the shell by way of the cap. The balls are expelled from the sockets in response to application of a predetermined force which tends to r...

The present invention enables a roller in which a radially outwardly protruding flange-like portion is formed on the outer peripheral portion of a roller body portion made of hard synthetic resin and presenting a substantially disc-like shape.

A roller element for use in a roller bearing having a surface formed with minute recesses at random so that the ratio RMS(L)/RMS(C) will be not more than 0.8 wherein RMS(L) is the roughness mean square value in the longitudinal direction and RMS(C) is the roughness mean square value in the circumferential direction and so that the SK value is not more than -0.2 in both the longitudinal and circumferential directions.

A roller formed by a spindle and a tubular jacket has elastic sleeves for attachment of the jacket on the spindle. Each elastic sleeve consists either of a clamp-on sleeve fitted on the spindle, a clamp-in sleeve applied concentrically therewith in the jacket, and a rubber ring arranged between the clamping sleeves, or of a sleeve of undulated cross-section whose wave crests directed radially outward bear against the inner wall of the jacket while its wave crests directed radially inward bear ag...

A roller device for roller trains or roller conveyors has a unit consisting of one side face of a load-carrying roller and a supporting shaft projecting from said side face and being non-rotatably connected to the load-carrying roller and adapted to support a drive pulley which is intended to be driven by a belt, chain or the like and can be passed on to the supporting shaft with any one of its ends facing said side face of the roller and which at one of said ends has coupling means adapted, whe...

The subject matter of the present invention is a brake roller (30, 40, 50, 60) for a roller conveyor (1) with a cylindrical tube (32, 42, 52, 62), said tube being rotatably carried on an axle (31, 41, 51, 61) that is resting on supports (2), said cylindrical tube being provided with a braking device, said braking device being provided with means for producing electromagnetic fields for slowing down the cylindrical tube (32, 42, 52, 62).

The roller exhibits a support body which is provided with a plurality of support disks. Insulating layers are arranged between the support disks. A heat-resistant cable surrounding the support body in several coils is embedded in each insulating layer. The insulating layer consists of fiber material which is sprayed on at the same time as the cable is wound around the support body. The cable provides a firm and lasting connection of the insulating layer to the support body.

An improved winding apparatus for a roller blind is disclosed. The winding apparatus includes a clutch mechanism provided between the winding roller and the cord pulley for transmitting rotation of the pulley to rotation of the winding roller. The clutch mechanism is arranged to prevent the urging mechanism from rotating the winding roller when the cord is not handled. It also allows the pulley to rotate a predetermined angle in a screen lifting direction when the cord is operated to lift the sc...

An improved guide roller assembly is utilized to guide high-speed rolled stock. The guide roller assembly includes a rim formed of cemented carbide and having a concave annular outer surface which engages the rolled stock and a circular inner surface. The inner surface of the rim includes a pair of axially opposite end portions having a truncated conical configuration. Two truncated conical bearing members are disposed in engagement with the axially opposite end portions of the inner surface of ...

A roller for a roller conveyor adapted to be mounted together with one or more other like rollers to constitute a composite roller means of desired length. The roller is adapted to be manufactured of plastic material in a blow casting process, so that the manufacturing cost will be low. The roller is provided with coupling means for coupling with other rollers or coupling members for building a composite roller means. The coupling means are adapted for easy disengagement and for rigid and strong...