Zamboni

Zamboni is the trademark for an electric-powered machine that scrapes the ice and applies hot water before the game, and in between periods, to provide a smooth playing surface for teams.

Frank Zamboni (1901-1988) was an American inventor who worked in the block ice business before electric refrigeration units became popular. He and his brother decided to open an ice rink. He invented a way to prevent the pipes under the rink from causing rippling in the ice. He then spent nine years working on a machine that would resurface the ice quickly. He applied for a patent and began selling the machines.

For example:

1. All of the kids crowded around the ice to watch the Zamboni.
2. In between hockey periods, the Zamboni comes out to clear the ice.