Abstract: A concealed rear wheel suspension device for a scooter comprising a frame component further comprising a frame cover, a frame and a stop fixedly connected to the rear of the frame, a suspension spring component further comprising a link, and a back fork; wherein a through hole is provided on two sides of the rear of the said frame, a threaded hole is provided on the upper surface of the said stop, two through holes are provided on the said frame cover corresponded to the said threaded holes; wherein a threaded end of the link sequentially crosses through the stop, a compression spring and a gasket, locked by a nut; wherein the back fork is rotatably connected to the frame through a bolt, and the a hole end of the link.

Abstract: A concealed rear wheel suspension device for a scooter comprising a frame component further comprising a frame cover, a frame and a stop fixedly connected to the rear of the frame, a suspension spring component further comprising a link, and a back fork; wherein a through hole is provided on two sides of the rear of the said frame, a threaded hole is provided on the upper surface of the said stop, two through holes are provided on the said frame cover corresponded to the said threaded holes; wherein a threaded end of the link sequentially crosses through the stop, a compression spring and a gasket, locked by a nut; wherein the back fork is rotatably connected to the frame through a bolt, and the a hole end of the link.

Abstract: A process for reducing the concentration of benzene in a hydrocarbon stream, the process including: fractionating a reformate to form a benzene concentrate fraction comprising benzene and other C6 hydrocarbons, and a heavies fraction comprising C7+ hydrocarbons; and hydrogenating the benzene concentrate fraction to form a hydrocarbon fraction having a reduced benzene concentration.

Abstract: A positioning device for a joint of a three-wheel stroller comprising a decorative and protective cover, a front fork joint further comprising a limit groove on each side of the front fork joint, a main pipe joint comprising a long groove located at middle of the main pipe joint, a compression spring is sheathed in the main pipe joint, and a folder adapter, the folder adapter on the outer side of the compression spring comprising folder adapter holes on both sides of the folder adapter, wherein the front fork joint is connected to the main pipe joint through a screw shaft, wherein the front fork joint is connected with the folder adapter through a linkage, and wherein the decorative and protective cover is on the outer side of the front fork joint and the folder adapter.

Abstract: A retractable leash for a swing car comprising a front cover further comprising threaded holes an opening, a back cover further comprising threaded holes an opening, a recoil spring, a rotatable guide rail in a hollow cylindrical structure, and a rope with a free end; wherein the threaded holes in the front cover and back cover correspond to each other, wherein the front cover and the back cover are conjoint by the thread holes and screws to enclose the recoil spring, rotatable guide rail, and the rope, wherein the recoil spring is disposed inside of the rotatable guide rail, wherein the recoil spring is fixedly to the back cover, wherein the opening on the front cover and the back cover correspond to each other, and the free end of the rope extends out of the openings.

Abstract: A multi-function baby stroller comprising a headstock tube component, which further comprising a front wheel, a handle and a headstock tube; a frame plate; and a frame tube component further comprising a rear wheel and a frame tube; wherein the headstock tube component and the frame plate are fixed by a broaching positioning device, the frame plate and frame tube component are removably connected.

Abstract: A process for the conversion of linear pentenes to propylene is disclosed. The process may include feeding hydrogen and a C5-olefin containing stream comprising linear pentenes, dienes, acetylenes, and cyclopentene to a catalytic distillation reactor system. Concurrently in the catalytic distillation reactor system, the acetylenes and dienes may be hydrogenated and the C5-olefin containing stream may be fractionated, thereby recovering an overheads fraction comprising the linear pentenes, a side draw fraction comprising the cyclopentene, and a bottoms fraction. In some embodiments, at least a portion of the overheads fraction may then be fed to a metathesis reactor for converting the linear pentenes to propylene.

Abstract: A process for reducing the concentration of benzene in a hydrocarbon stream, the process including: fractionating a reformate to form a benzene concentrate fraction comprising benzene and other C6 hydrocarbons, and a heavies fraction comprising C7+ hydrocarbons; and hydrogenating the benzene concentrate fraction to form a hydrocarbon fraction having a reduced benzene concentration.