sentences:  The skates were problematic and unsuccessful as the wearer could not turn nor could they stop.At some point between 1895 and 1899 the UK engineering company D. Napier & Son made Ritter "road skates", which had two comparatively large wheels, front and back, on each skate.The first U.S. patent for modern in-line skates, designed to behave like ice runners with individually sprung and cushioned wheels, was granted under patent number in July 1953 to Ernest Kahlert of Santa Ana, CA.