Abstract: A pneumatic motion system includes a rotating wheel, a plurality of wheel rods mounted to the rotating wheel, a plurality of main weight members respectively sleeved on the wheel rods, at least one air supply member, and a plurality of air cycle units. Each of the air cycle units is disposed at one of two opposite ends of a respective one of the wheel rods, and includes two main air compressors fluidly communicating with the at least one air supply member. For each wheel rod, when the respective one of the main weight members is moved to the one of the opposite ends of the wheel rod, each of the main air compressors is pressed by the main weight member to force air into the at least one air supply member.

Abstract: A pneumatic motion system includes a plurality of casings, a plurality of frame members respectively extending into the casings, a plurality of linear rails respectively mounted to the frame members, a plurality of main weight members respectively and movably mounted to the linear rails, at least one air supply member, and pairs of main air compressors. Each pair of the main air compressors is disposed at one of two opposite ends of a respective one of the casings. For each casing, when the respective one of the main weight members is moved to the one of the opposite ends of the casing, each pair of the main air compressors is pressed by the main weight member to force air into the at least one air supply member.

Abstract: A manhole/handhole includes a cover and a frame base. A plurality of elastic fixtures are bonded below through holes of the frame base. The through holes are corresponding to fixing holes of the cover so that screw bolts pass through the fixing holes of cover and the through holes of frame base and are locked to the fixtures. The cover is combined with the frame base so as to prevent the cover from jumping. Besides, at least a heightening base is installed between the cover and the frame base. The heightening base is stacked on the frame base so that the manhole/handhole is leveled with road surface for economizing working and time of roadwork.

Abstract: A manhole/handhole includes a cover and a frame base. A plurality of elastic fixtures are bonded below through holes of the frame base. The through holes are corresponding to fixing holes of the cover so that screw bolts pass through the fixing holes of cover and the through holes of frame base and are locked to the fixtures. The cover is combined with the frame base so as to prevent the cover from jumping. Besides, at least a heightening base is installed between the cover and the frame base. The heightening base is stacked on the frame base so that the manhole/handhole is leveled with road surface for economizing working and time of roadwork.