In one aspect, a gap blocker having a body with an upper blocking portion and leg portions of the body connected to the upper blocking portion at longitudinally spaced apart locations. The leg portions of the body have an initial, undeflected configuration with at least one of the leg portions having a first orientation relative to the upper blocking portion. The leg portions of the body have an operating configuration with the body in a gap between rollers wherein the at least one of the leg portions has the first orientation relative to the upper blocking portion. The upper blocking portion has upper contact portions and the leg portions have lower contact portions for contacting the rollers. The body also has outer surface portions intermediate the upper and lower contact portions configured to be in clearance with the rollers.

In one aspect, a gap blocker having a body with an upper blocking portion and leg portions of the body connected to the upper blocking portion at longitudinally spaced apart locations. The leg portions of the body have an initial, undeflected configuration with at least one of the leg portions having a first orientation relative to the upper blocking portion. The leg portions of the body have an operating configuration with the body in a gap between rollers wherein the at least one of the leg portions has the first orientation relative to the upper blocking portion. The upper blocking portion has upper contact portions and the leg portions have lower contact portions for contacting the rollers. The body also has outer surface portions intermediate the upper and lower contact portions configured to be in clearance with the rollers.

Various embodiments illustrated herein disclose a container unloader device. The container unloader device comprises a platform to receive a container, wherein the container comprises a package. The container unloader device also comprises a front panel configured to move between a raised orientation and a lowered orientation, wherein when the front panel being is in the raised orientation, the front panel is orthogonal with respect to the platform, and when the front panel is in the lowered orientation, the front panel and the platform form a continuous surface. The platform can be pivoted from a first angle to a second angle, that is greater than the first angle. The package leans against the front panel the front panel is in the raised orientation. The package is released on a surface of a conveyor when the front panel is in the lowered orientation.

A roller conveyor system for conveying material may include a frame and roller conveyors arranged on the frame. The roller conveyor system is configurable in an operating state and in a maintenance state. At least one of the roller conveyors is arranged in an operating position in the operating state and in a maintenance position that is different from the operating position in the maintenance state. In the maintenance position, a region is then advantageously freed up, which can be used to perform maintenance. In addition, a method for transferring such a roller conveyor system from an operating state into a maintenance state may involve transferring one of the roller conveyors from the operating position into a maintenance position different from the operating position.

A stair roller device comprising: a first rail with a top side and a bottom side; a second rail with a top side and a bottom side, the second rail parallel to the first rail; a top cross member fixedly attached to the first rail and second rail at or near the top of the first and second rails, the top cross member having a top side and a bottom side; at least one other cross members fixedly attached to the first rail and second rail and below the top cross member; a plurality of wheels on the top side of the first rail, a plurality of wheels on the top side of the second rail, a horizontal extending member extending at an acute angle from the bottom side of the top cross member, the horizontal extending member configured abut against a structure at or near the top of a set basement stairs to temporarily hold the stair roller device on the basement stairs; where the stair roller device is configured to temporarily and securely lay on basement stairs such that a cumbersome item can be rolled up the stair roller device via the plurality of wheels up and out of a basement. A stair roller system comprising: a first rail with a top side and a bottom side; a second rail with a top side and a bottom side, the second rail parallel to the first rail; a top cross member fixedly attached to the first rail and second rail at or near the top of the first and second rails, the top cross member having a top side and a bottom side; at least one other cross members fixedly attached to the first rail and second rail and below the top cross member; a plurality of wheels on the top side of the first rail, a plurality of wheels on the top side of the second rail, a horizontal extending member extending at an acute angle from the bottom side of the top cross member, the horizontal extending member configured abut against a structure at or near the top of a set basement stairs to temporarily hold the stair roller device on the basement stairs; a rear wall fixedly attached to the horizontal extending member and the bottom side of the top cross member, the rear wall, horizontal extending member, and bottom side of the top cross member forming a triangular box; a vertical slot in the horizontal extending member; an elongated winch member with a winch at the distal end; a shank pinned within the triangular box, such that the shank can rotate or pivot within the vertical slot, the shank configured to removeably couple to the elongated winch member at a proximal end of the elongated winch member; a strap in operable communication with the winch and configured to removeably attach to an oil tank; and where the stair roller device is configured to temporarily and securely lay on basement

A stair roller device comprising: a first rail with a top side and a bottom side; a second rail with a top side and a bottom side, the second rail parallel to the first rail; a top cross member fixedly attached to the first rail and second rail at or near the top of the first and second rails, the top cross member having a top side and a bottom side; at least one other cross members fixedly attached to the first rail and second rail and below the top cross member; a plurality of wheels on the top side of the first rail, a plurality of wheels on the top side of the second rail, a horizontal extending member extending at an acute angle from the bottom side of the top cross member, the horizontal extending member configured abut against a structure at or near the top of a set basement stairs to temporarily hold the stair roller device on the basement stairs; where the stair roller device is configured to temporarily and securely lay on basement stairs such that a cumbersome item can be rolled up the stair roller device via the plurality of wheels up and out of a basement. A stair roller system comprising: a first rail with a top side and a bottom side; a second rail with a top side and a bottom side, the second rail parallel to the first rail; a top cross member fixedly attached to the first rail and second rail at or near the top of the first and second rails, the top cross member having a top side and a bottom side; at least one other cross members fixedly attached to the first rail and second rail and below the top cross member; a plurality of wheels on the top side of the first rail, a plurality of wheels on the top side of the second rail, a horizontal extending member extending at an acute angle from the bottom side of the top cross member, the horizontal extending member configured abut against a structure at or near the top of a set basement stairs to temporarily hold the stair roller device on the basement stairs; a rear wall fixedly attached to the horizontal extending member and the bottom side of the top cross member, the rear wall, horizontal extending member, and bottom side of the top cross member forming a triangular box; a vertical slot in the horizontal extending member; an elongated winch member with a winch at the distal end; a shank pinned within the triangular box, such that the shank can rotate or pivot within the vertical slot, the shank configured to removeably couple to the elongated winch member at a proximal end of the elongated winch member; a strap in operable communication with the winch and configured to removeably attach to an oil tank; and where the stair roller device is configured to temporarily and securely lay on basement

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 invention relates to a method for assembling a roller conveyor having rollers for products, each having a cylindrical roller body and a first and second support element on opposite ends of the roller body, the second support element having pulley means; providing a frame having a first and second frame part for mounting therebetween the rollers; and, for the purpose of mounting a roller to the frame: mounting the first support element to a first mounting provision of the first frame part; passing a drive element and a further drive element over the pulley means of the roller; tensioning the drive element by exerting a force on the roller by means of a tensioning device; mounting the second support element of the roller to a second mounting provision of the second frame part while keeping the drive element tensioned; and removing the tensioning device from the roller.

A pallet centering device includes a frame upon which is mounted a plurality of conveyor rollers, the conveyor rollers mounted transverse to a direction of pallet travel. A first pallet pusher unit and a second pallet pusher unit are associated with respective sides of the support frame, both for reciprocal movement transverse to the direction of pallet travel. The first and second pallet pusher units each have pallet pusher members configured for engaging respective sides of a pallet. At least one transverse U-channel rail is mounted to the support frame beneath the conveyor rollers and defining a channel track. Each first and second pallet pusher unit has at least one depending bearing mount aligned with the channel track and provided with a bearing rotatably engaging the channel track. A drive assembly moves the first and second pallet pusher units reciprocally for centering the pallet located on the conveyor rollers.

A pallet centering device includes a frame upon which is mounted a plurality of conveyor rollers, the conveyor rollers mounted transverse to a direction of pallet travel. A first pallet pusher unit and a second pallet pusher unit are associated with respective sides of the support frame, both for reciprocal movement transverse to the direction of pallet travel. The first and second pallet pusher units each have pallet pusher members configured for engaging respective sides of a pallet. At least one transverse U-channel rail is mounted to the support frame beneath the conveyor rollers and defining a channel track. Each first and second pallet pusher unit has at least one depending bearing mount aligned with the channel track and provided with a bearing rotatably engaging the channel track. A drive assembly moves the first and second pallet pusher units reciprocally for centering the pallet located on the conveyor rollers.