Roller-skating sports include speed skating, hockey, figure skating, and dancing competitions similar to the ice-skating sports, as well as the 8️⃣ vertical and street-style competitions common to so-called extreme sports.
Development of the roller skate The invention of roller skates has been 8️⃣ traditionally credited to a Belgian, Joseph Merlin, in the 1760s, although there are many reports of wheels attached to ice 8️⃣ skates and shoes in the early years of that century.
Early models were derived from the ice skate and typically had 8️⃣ an "in-line" arrangement of wheels (the wheels formed a single straight line along the bottom of the skate).In 1819 M.
Petibled 8️⃣ of Paris received the first patent for a roller skate.
Like previous models, Petibled's skate had an in-line wheel arrangement, using 8️⃣ three wooden or metal wheels.
máquina caça níquel
