A sound attenuated material handling element reduces vibration and sound in a material handling system. The material handling element may be a sound attenuated roller for use in a roller conveyer or a sound attenuated nestable tote for receiving and transporting articles in the material handling system. Reducing vibration in material handling element reduces the noise produced by the element. The sound attenuated roller includes sound attenuating material disposed inside of the roller and in contact with the inner surface of the roller body. The sound attenuated nestable tote includes sound dampening material disposed in or formed with the tote structure. The sound damping material may be integrally formed with the roller or tote in order to maximize vibration and noise attenuation. Three dimensional computer analysis may be used to determine optimized locations for placement of the sound damping material on the roller or tote.

A drive wheel for a power drive unit of a cargo handling system is disclosed. One aspect of the drive wheel is that it includes one or more wear indicators for a tire of the drive wheel. Another aspect of the drive wheel is that it includes one or more features (e.g., at least one protrusion, alone or in combination with one or more slots) that resists relative rotational movement between the tire of the drive wheel and the hub of the drive wheel.

A drive wheel for a power drive unit of a cargo handling system is disclosed. One aspect of the drive wheel is that it includes one or more wear indicators for a tire of the drive wheel. Another aspect of the drive wheel is that it includes one or more features (e.g., at least one protrusion, alone or in combination with one or more slots) that resists relative rotational movement between the tire of the drive wheel and the hub of the drive wheel.

The transport roller disclosed herein includes: an outer tubular member which is tubular and is made of a metal material; an inner tubular member which is provided inside the outer tubular member, is tubular, and is made of a ceramic material; multiple ring-shaped projections which each have a ring shape along an outer peripheral surface of the outer tubular member, are made of a metal material, and are supporting the heating target; and protection members which are formed in respective portions of the ring-shaped projections in contact with the heating target, and each include a ceramic coating containing a ceramic component.

The transport roller disclosed herein includes: an outer tubular member which is tubular and is made of a metal material; an inner tubular member which is provided inside the outer tubular member, is tubular, and is made of a ceramic material; multiple ring-shaped projections which each have a ring shape along an outer peripheral surface of the outer tubular member, are made of a metal material, and are supporting the heating target; and protection members which are formed in respective portions of the ring-shaped projections in contact with the heating target, and each include a ceramic coating containing a ceramic component.

A conveyor system and drive element for same include a chain including a plurality of links that hinge with respect to each other and a plurality of moving elements such as balls that freely move in the links. A drive element drives the chain in a conveying direction and includes an elongated body with a surface that has a plurality of planar facets arranged around the longitudinal axis of the body. The facets extend along the body and engage respective links of the chain as the body is rotated to drive the chain. Relief elements are located in each facet and are configured for receiving the moving elements of the chain links engaging the facets so the links lie generally flat on the facets when the chain is driven. Other versions of the drive element are faceted for driving a chain with links but without relief elements.

A system for moving loads comprising a cargo compartment floor, at least one roller track comprising rollers arranged one behind the other in the cargo compartment floor, at least one guideway in the floor and extending parallel to the at least one track, and at least one transport vehicle removably accommodated in and movable along the guideway. The transport vehicle comprises at least one connecting element movable between first and second operating positions. In the first operating position, the connecting element is configured so the transport vehicle is positionable beneath a load on the roller track, and in the second operating position, the connecting element is configured to interact with the load to connect the load to the transport vehicle, so the load is entrained when the transport vehicle moves along the guideway. The transport vehicle further comprises a drive mechanism to move the transport vehicle along the guideway.

A monitoring system includes a fastener. A sensor is coupled to the fastener. A circuit board is electrically coupled to the sensor. An antenna electrically coupled to the circuit board.

A roller track includes a base, parallel guides, roller support bars placed into their respective guides, and a plurality of rollers removably disposed between the roller support bars. The roller support bars preferably are removably secured to the base via the respective guides which are affixed to the base. The base also can be provided with connecting elements sidewalls thereof such that a plurality of bases of roller tracks can be connected laterally to accommodate any width of shelf or display planogram. Thus, the roller tracks can be used either separately roller tracks or as a continuous mat (i.e. a plurality of roller tracks affixed to adjacent roller tracks). Additionally, dividers can be removably affixed to each roller track via securing members comprising an upper body portion formed via a living hinge and at least one lower connector that removably connects the securing member to the roller track.

A roller track includes a base, parallel guides, roller support bars placed into their respective guides, and a plurality of rollers removably disposed between the roller support bars. The roller support bars preferably are removably secured to the base via the respective guides which are affixed to the base. The base also can be provided with connecting elements sidewalls thereof such that a plurality of bases of roller tracks can be connected laterally to accommodate any width of shelf or display planogram. Thus, the roller tracks can be used either separately roller tracks or as a continuous mat (i.e. a plurality of roller tracks affixed to adjacent roller tracks). Additionally, dividers can be removably affixed to each roller track via securing members comprising an upper body portion formed via a living hinge and at least one lower connector that removably connects the securing member to the roller track.