The story
In 1929, the American Radiator Company (founded 1892) merged with the Standard Sanitary Manufacturing Company (founded 1875) to form the American Radiator and Standard Sanitary Corporation. The plumbing division, Standard Sanitary, would continue to sell their products under the "Standard" label until 1967, when the company changed its name to American Standard Corporation. The American Standard label was used for both divisions from that year on.
In 1929, American Standard bought the Kewanee Boiler Company, which it kept until the early 1970s.
In 1968, the group purchased earthmoving and mining product range of the Westinghouse Air Brake Company (WABCO). It divested itself of these assets in 1984.
In 1984, the group acquired HVAC manufacturer Trane. In 1999, American Standard purchased control of the United Kingdom-based plumbing fixture companies Armitage Shanks and Ceramica Dolomite of Italy from Blue Circle Industries for $430 million.
On February 1, 2007 the company announced it would break up its three divisions:
The automotive parts division was spun off, forming WABCO Vehicle Control Systems.
The plumbing fixtures division was sold off to Bain Capital for $1.745 billion. Bain sold the North American and Asian operations to Sun Capital and Lixil Group respectively, while retaining the European and Latin American operations as Ideal Standard. The deal also included the rights to use the former company name in North America operating as American Standard Brands.
The remainder of the company took the name of its heating and air conditioning division, Trane. Ingersoll Rand made an offer to acquire Trane on December 17, 2007 and the sale was completed on June 5, 2008. The parent company has since been renamed Trane Technologies.
From Wikipedia’s article on American Standard Companies, shared under CC BY-SA 4.0.4