Cooler

When summers are hot, they may also be used just to get cold groceries home from the store, such as keeping ice cream from melting in a sizzling automobile.

On February 24, 1951, Laramy filed an application with the United States Patent Office for a portable ice chest (Serial No.

In 1952, the portable Esky Auto Box was released in Australia by the Sydney refrigeration company Malley’s.

Made from steel and finished in baked enamel and chrome, with cork sheeting for insulation, the Esky became the first mass-produced cooler on the market.

Many come with power adapters, which use an electronic transformer to convert AC mains or line voltage down to 12 volts, with a lighter-like socket for the cooler's cord to plug in.

The mold continues to rotate during the cooling phase, producing a thick and uniform final product.

In the case of roto-molded coolers, the heated liquid plastic is applied over a thick layer of insulation.

The ride-on cooler can transport food and drinks short distances and can be used in a small backyard, a neighborhood, or at large outdoor parties.

Designs use either gas-powered lawnmower engines or electric motors which are lighter, more energy efficient, and quieter.

[7] [8] Gas-powered engines range from 33 to 205 cubic centimetres (2.0 to 12.5 cu in) with a typical top-speed of 13 miles per hour (21 km/h),[9] but enthusiasts have built much faster versions.