A bottom dampener can be provided for a can rack system. The bottom dampener can dampen forces exerted on a bottom of the can rack system by cans inserted into the can rack system. The bottom dampener can include a curved pad, which can fit into a bottom flap of the can rack system. The curved pad can be used for dampening a force exerted by a can on the bottom flap. The bottom dampener can also include one or more tabs. Each of the tabs can fit into a hole along the bottom flap to removably couple the bottom dampener to the can rack system.

A conveyor flight for a chain comprising at least two spaced apart links, and two side plates that connect the links, with each side plate including two spaced apart extension pins extending from the side plate. The flight comprises a metal support, and the metal support includes two spaced apart cylindrical portions adapted to receive the two spaced apart extension pins. The flight also includes a flexible casing surrounding the metal support.

Assemblies, apparatuses, and methods to extract or convey a material from a source of the material may include a vacuum generation and sound attenuation assembly and a material receiver to enhance conveyance the material from the source of the material. The vacuum generation and sound attenuation assembly may include a vacuum source positioned to cause a vacuum flow between the source of the material, the material receiver, and the vacuum generation and sound attenuation assembly. The vacuum generation and sound attenuation assembly may further include a sound attenuation chamber positioned to receive at least a portion of the vacuum flow from, and attenuate sound generated by, the vacuum source. The material receiver may be positioned an elevated location relative to a source of the material and be capable of staging and metering the conveyance of material when moving material at the top of a structure, such as a refinery tower.

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 fixed radius conveyor belt system of the type assembled from a plurality of substantially identical belt modules is provided. The fixed radius conveyor belt system is assembled from a plurality of belt modules, each having a leading edge and a trailing edge, and an inner side and an outer side and with a modular belt body between therebetween, and where a plurality of eye parts extend from the leading and trailing edges and are off-set on one edge relative to the other edge, such that two adjacent like modular belt links are pushed together. The leading edge and the trailing edge are arranged with a mutual angle , such that an axis through the leading axis will intercept an axis through the trailing edge in a turning center, such that eye parts further away from the turning center will have curved sides following ever larger circle radiuses.

A sound attenuated conveyor roller assembly reduces the noise or vibration produced by the conveyor roller assembly during operation, and includes a conveyor roller having a cylindrical portion to which a sound damper may be coupled. The conveyor roller may include an unreduced outer surface and a reduced outer surface, in which the sound damper is disposed at the reduced outer surface such that an outer surface of the damper and the unreduced outer surface of the conveyor roller are located at substantially equal radial distances from a longitudinal axis of the conveyor roller. A tapered end connector having a tapered plastic tip may be coupled to each end of the conveyor roller to further reduce noise and vibration in the conveyor roller assembly.

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 bottom dampener can be provided for a can rack system. The bottom dampener can dampen forces exerted on a bottom of the can rack system by cans inserted into the can rack system. The bottom dampener can include a curved pad, which can fit into a bottom flap of the can rack system. The curved pad can be used for dampening a force exerted by a can on the bottom flap. The bottom dampener can also include one or more tabs. Each of the tabs can fit into a hole along the bottom flap to removably couple the bottom dampener to the can rack system.

A mechanical device includes an object mounted on rollers, a first rail support and a second rail support separated from each other by an intermediate space, a first transport device for transporting the object along the first rail support between a first position, in which the object rests on the first rail support, and a transfer position, and a second transport device for transporting the object along the second rail support between a second position, in which the object rests on the second rail support, and the transfer position. In the transfer position, the object rests on both the first rail support and the second rail support.