A road finishing machine comprises a tractor and a screed hinged to the tractor to be towed behind the tractor. At the tractor, a main control platform of the road finishing machine is provided which offers space for an operator and comprises operational controls for controlling functions of the road finishing machine. The main control platform has a roof, wherein a lighting unit with a light source is provided at the roof. The lighting unit comprises a housing which accommodates the light source and has a reflector. The reflector is configured to reflect light emitted by the light source into a working area of the screed so that the working area of the screed is illuminated indirectly.

A road finishing machine comprises a tractor and a screed hinged to the tractor to be towed behind the tractor. At the tractor, a main control platform of the road finishing machine is provided which offers space for an operator and comprises operational controls for controlling functions of the road finishing machine. The main control platform has a roof, wherein a lighting unit with a light source is provided at the roof. The lighting unit comprises a housing which accommodates the light source and has a reflector. The reflector is configured to reflect light emitted by the light source into a working area of the screed so that the working area of the screed is illuminated indirectly.

A power trowel blade that is made of non-rusting solid component material for use with a power trowel apparatus. The trowel blade include a mounting surface and an oppositely facing finishing surface. The finishing surface is flush and free of voids or protrusions. The flush finishing surface prevents surface material being collected as the trowel blade is used to finish surfaces to a hard finish.

A power trowel blade that is made of non-rusting solid component material for use with a power trowel apparatus. The trowel blade include a mounting surface and an oppositely facing finishing surface. The finishing surface is flush and free of voids or protrusions. The flush finishing surface prevents surface material being collected as the trowel blade is used to finish surfaces to a hard finish.

The invention provides a float trowel blade attachment for cement floor finishers comprising a rectangular section of sheet metal having a top surface and a bottom surface and having its edges optionally bent upwardly, means for providing to the top surface a three-sided rearwardly open pocket on the back of the section adjacent the leading edge thereof adapted to partially receive a finish trowel blade of the finisher, a spring clip secured to the top surface or the pocket-forming means and extending rearwardly therefrom so as to be engageable with the finish trowel blade to retain the section thereon, and wherein said rectangular sheet metal has attached to its bottom surface using an adhesive or mechanical attachment material interlayer, a composite rigid abrasive element bonded to a resilient backing and wherein said abrasive element comprises a substrate of two or more non woven layers pads including holes for inserting grinding and polishing elements.

The invention provides a float trowel blade attachment for cement floor finishers comprising a rectangular section of sheet metal having a top surface and a bottom surface and having its edges optionally bent upwardly, means for providing to the top surface a three-sided rearwardly open pocket on the back of the section adjacent the leading edge thereof adapted to partially receive a finish trowel blade of the finisher, a spring clip secured to the top surface or the pocket-forming means and extending rearwardly therefrom so as to be engageable with the finish trowel blade to retain the section thereon, and wherein said rectangular sheet metal has attached to its bottom surface using an adhesive or mechanical attachment material interlayer, a composite rigid abrasive element bonded to a resilient backing and wherein said abrasive element comprises a substrate of two or more non woven layers pads including holes for inserting grinding and polishing elements.

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

A paving machine for spreading, leveling and finishing concrete having a main frame, center module, bolsters laterally movably, and a crawler track associated with respective aft and forward ends of the bolsters. A bolster swing leg for each crawler track supports an upright jacking column. A worm gear drive permits rotational movements of the crawler track and the jacking column. A hinge bracket is interposed between each swing leg and a surface of the bolsters to enable pivotal movements of the swing leg. A length-adjustable holder engages the pivot pin on the hinge bracket and pivotally engages the swing leg. The holder permits pivotal motions of the swing leg in its length-adjustable configuration and prevents substantially any motion of the swing leg in its fixed-length configuration. A feedback loop cooperates with transducers keeping the crawler tracks position. The paving machine can be reconfigured into a narrowed transport configuration.

A concrete finishing machine includes a base portion and an extendable and retractable boom mounted at the base portion, and a finishing head mounted at a distal end of the boom. The finishing head includes (i) a float pivotally attached at a frame of the finishing head via a plurality of linkages, (ii) a float actuator that, when actuated, imparts pivotal movement of the linkages to adjust the float relative to the frame, and (iii) a surface finishing element. The concrete finishing machine is operable to selectively position the float or the surface finishing element at the concrete surface during extension or retraction of the boom. Responsive to a sensing device, the finishing head is maintained at a desired level or position above the concrete surface with the float or the surface finishing element at the concrete surface during extension or retraction of the boom.

A concrete finishing machine includes a base portion and an extendable and retractable boom mounted at the base portion, and a finishing head mounted at a distal end of the boom. The finishing head includes (i) a float pivotally attached at a frame of the finishing head via a plurality of linkages, (ii) a float actuator that, when actuated, imparts pivotal movement of the linkages to adjust the float relative to the frame, and (iii) a surface finishing element. The concrete finishing machine is operable to selectively position the float or the surface finishing element at the concrete surface during extension or retraction of the boom. Responsive to a sensing device, the finishing head is maintained at a desired level or position above the concrete surface with the float or the surface finishing element at the concrete surface during extension or retraction of the boom.