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.

A stair roller device comprising: a first rail; a second rail, 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; 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 and 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 stair roller device comprising: a first rail; a second rail, 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; 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 and 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 machine for assembling rebar cages includes a support frame, axial rollers mounted to the support frame for rotatably supporting a cylindrical wire cage for axial rotation about an axis of elongation, a carriage movably mounted to the support frame for translation, with the carriage adapted for driving an elongate rebar rod in a first axial direction. A drive mechanism is mounted to the support frame for driving the carriage in translation back and forth between a retracted position and an extended position for driving rebar rods into the rebar cages for assembly.

A machine for assembling rebar cages includes a support frame, axial rollers mounted to the support frame for rotatably supporting a cylindrical wire cage for axial rotation about an axis of elongation, a carriage movably mounted to the support frame for translation, with the carriage adapted for driving an elongate rebar rod in a first axial direction. A drive mechanism is mounted to the support frame for driving the carriage in translation back and forth between a retracted position and an extended position for driving rebar rods into the rebar cages for assembly.

A conveyor roller includes a roller tube, a motor assembly comprising a motor and a motor shaft and a drive assembly engaged with the motor assembly and the roller tube. The drive assembly includes a drive member, a connector, and a sleeve. The drive member includes at least one first slot that axially extends from a front face of the drive member towards a rear face. The connector includes an axial opening and at least one first projection extending radially outwardly. A sleeve disposed at least partially between the connector and the drive member. The sleeve is configured to engage the at least one first slot of the drive member and the at least one first projection of the connector. A portion of the sleeve extends radially outwardly of the drive member, such that the portion of the sleeve is configured to engage an inner surface of the roller tube.

A conveyor roller includes a roller tube, a motor assembly comprising a motor and a motor shaft and a drive assembly engaged with the motor assembly and the roller tube. The drive assembly includes a drive member, a connector, and a sleeve. The drive member includes at least one first slot that axially extends from a front face of the drive member towards a rear face. The connector includes an axial opening and at least one first projection extending radially outwardly. A sleeve disposed at least partially between the connector and the drive member. The sleeve is configured to engage the at least one first slot of the drive member and the at least one first projection of the connector. A portion of the sleeve extends radially outwardly of the drive member, such that the portion of the sleeve is configured to engage an inner surface of the roller tube.

Portable linear transformer for laminated gypsum boards, that comprises a central module (2) in a structure having a converting bridge (4) where different converting tools (5) are located, preferably incorporated on a runner (19) that allows to fasten them in different positions by means of screws with knob (20). The central module (2) preferably shows the precision calibration rollers, one of input (6) and the other of output (7), on which the board (P) to be converted slides and the lateral modules (3) with a series of easels (8), with carriage rollers (9) on which the said board (P) is supported and also slides, coplanar to the said input (6) and output (7) rollers. Preferably, the linear and hand-held converting machine also comprises two lateral modules (3) that are fastened on both sides of the central module (2).

A cargo hold component system for a cargo hold of an aircraft, the cargo hold component system including floor elements and fixing elements. The floor elements can at least partially be fixed releasably by the fixing elements to fixing sites provided on or in the hold floor, such that in a state fixed to the fixing sites, the floor elements support a loading of the hold with cargo containers, and that in a state in which a first group of the floor elements has been removed from the fixing sites by release of the fixing elements and a second group of the floor elements has been partially removed from the fixing sites by release of the fixing elements, the hold is sealed gas-tightly.

A cargo hold component system for a cargo hold of an aircraft, the cargo hold component system including floor elements and fixing elements. The floor elements can at least partially be fixed releasably by the fixing elements to fixing sites provided on or in the hold floor, such that in a state fixed to the fixing sites, the floor elements support a loading of the hold with cargo containers, and that in a state in which a first group of the floor elements has been removed from the fixing sites by release of the fixing elements and a second group of the floor elements has been partially removed from the fixing sites by release of the fixing elements, the hold is sealed gas-tightly.