Jacuzzi
Jacuzzi is a company that produces whirlpool bathtubs and spas. Its first product was a bath with massaging jets. The trademarked Jacuzzi name is commonly used to refer to any bath with water jets, and can thus be considered a genericized trademark. The company has attempted to counter this by advertising that their tubs "are Jacuzzi, and everyone else's are just hot tubs."
In 1968, Candido Jacuzzi brought to market the first self-contained, fully integrated whirlpool bath by incorporating jets into the sides of the tub. Dubbed the "Roman Bathtub," the jets used a 50-50 air/water ratio to improve the experience. The Jacuzzi became a symbol of a luxurious lifestyle. Hundreds of thousands of Jacuzzi portables were installed, both indoors and outdoors, at recreation centers and private homes. Hollywood celebrities began making personal use of them.
the company produced larger units with built-in heating and filtration systems. This was the beginning of the spa industry as we know it today, and it firmly associated the Jacuzzi name with the tubs. The integrated design allowed for easy installation and portability, and thousands of homeowners installed the units. As the industry matured, the company's product line expanded with models that worked in multi-use configurations as hot tubs, whirlpool baths, or both. These models could be installed indoors or outdoors.