What did Dioscoro Umali invent the definition

The first patented one Roller skate was introduced in 1760 by the Belgian designer John Joseph Merlin. His roller skate was little more than a skate with wheels instead of a runner. They were difficult to steer and even more difficult to stop because they had no brakes and overall they weren't very popular.

The history The roller skate continued in 1863 when James Plimpton of Massachusetts invented the roller skate with 4 wheels and independent axles (four-roller roller skates). These rotated by "pressing" on one side or the other so that the roller skater could control them.
This was a huge improvement on the John Joseph Merlin design and drove the great popularity of roller skating in the USA, which then spread to Europe and the whole world and lasted until the 1930s.

The roller skating rink operators association was founded in the USA in 1937. It is currently called the Roller Skating Association. The association promotes roller skating and offers the public courses to educate the population about roller skating.

However, there were 2 further prerequisites for the great success of the roller skate, which is mainly used by young people as a game and sports device on the street:
On the one hand, metropolises like Paris were almost completely asphalted from 1870, and the other major European cities followed. In addition, from 1883, with the invention of the ball grinder, ball bearings for everyday devices became affordable.

In the mid-1980s there was another innovation with the invention of inline skates (rollerblades), which was also based on technological advances.

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