Abstract: The present invention provides a internal pipe joints suitable for connection when pipes used under light-load conditions, or to be more concrete, plastic coated steel pipes having an external diameter ranging from about 28 mm to about 45 mm, which are produced by coating the outer surfaces of thin steel pipes with synthetic resin in a thin layer, are assembled into a planar or three-dimensional pipe structure, and more specifically, relates to pipe joints that have high strength in pipe connection and is excellent in design for having a simple appearance design in the position connecting the pipes.

Abstract: The present invention relates to a wheel conveyor constructed by installing a wheel assembly, which includes wheels and support plates arranged on both sides and rotatably supporting axles of the wheels, in a groove of a frame material, the wheel conveyor being easily disassembled and cleaned, provided with a damping function, and also provided with a dust-trapping function. Wheels have axle pins, and support plates are provided with pin holes. A wheel assembly is constructed by inserting the axle pins into the pin holes to be rotatably supported. The cross-sectional shape of a frame material is formed such that first groove-like portions formed integrally with lip portions support the support plates to be movable in the longitudinal direction. Bottom groove-like portions formed integrally with a bottom wall are formed to splay more than the edges of the lip portions. The two groove-like portions are integrally jointed to each other through a joint portion.

Abstract: A gravity wheel conveyor or roller conveyor is provided capable of braking for moderating and reducing the transfer speed of a relatively lightweight object being transported by using brake wheels or brake rollers, or of brake control for stopping the object being transported at a target position. In the wheel or roller conveyor that is constructed by arranging a plurality of freely rotatable wheels 4 or rollers 10 in the transporting direction of an object, which transports an object being transported 1 by its gravitational operation, one or more selected wheels 4 or rollers 10 are constructed as brake wheels 6 or brake rollers 12 each having an outer circumferential surface onto which a brake material 7 or 11 that is soft and high in its rebound resilience is fixed so as to protrude to form a diameter larger than the outer circumferential surface of each of the wheels or rollers.

Abstract: The present invention relates to a wheel conveyor constructed by installing a wheel assembly, which includes wheels and support plates arranged on both sides and rotatably supporting axles of the wheels, in a groove of a frame material, the wheel conveyor being easily disassembled and cleaned, provided with a damping function, and also provided with a dust-trapping function. Wheels have axle pins, and support plates are provided with pin holes. A wheel assembly is constructed by inserting the axle pins into the pin holes to be rotatably supported. The cross-sectional shape of a frame material is formed such that first groove-like portions formed integrally with lip portions support the support plates to be movable in the longitudinal direction. Bottom groove-like portions formed integrally with a bottom wall are formed to splay more than the edges of the lip portions. The two groove-like portions are integrally jointed to each other through a joint portion.

Abstract: A gravity wheel conveyor or roller conveyor is provided capable of braking for moderating and reducing the transfer speed of a relatively lightweight object being transported by using brake wheels or brake rollers, or of brake control for stopping the object being transported at a target position. In the wheel or roller conveyor that is constructed by arranging a plurality of freely rotatable wheels 4 or rollers 10 in the transporting direction of an object, which transports an object being transported 1 by its gravitational operation, one or more selected wheels 4 or rollers 10 are constructed as brake wheels 6 or brake rollers 12 each having an outer circumferential surface onto which a brake material 7 or 11 that is soft and high in its rebound resilience is fixed so as to protrude to form a diameter larger than the outer circumferential surface of each of the wheels or rollers.