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Spring Air Company is a mattress company based in the United States.It was founded in Chicago in 1926 when Francis Karr patented a mattress design with free-end coils. Because of the heavy weight, high transportation costs, and low value per unit weight of mattresses, they are often manufactured lo
Mattress coils, also known as mattress springs, are coil springs used in a mattress. Coils are primarily used in the core (support layer) of innerspring mattresses , which is their original use. In recent years, small "micro-coils" are being used in the upholstery (comfort layer) of mattresses, primarily with a coil core ("coil-on-coil ...
Modern spring mattress cores, often called "innersprings" are made up of steel coil springs, or "coils". The gauge of the coils is one factor which determines firmness and support. Coils are measured in quarter increments. The lower the number, the thicker the spring. In general, higher-quality mattress coils have a 14-gauge (1.63 mm) diameter.
Prior to the early 1900s, springs were used as bed bases or box springs; these spring sets were not covered with fabrics. There were no "innerspring" mattresses manufactured until after 1900. Bushnell's patent has been cited [ 26 ] as an innerspring but it was an under bed spring--which in the mid-1800s was also called a mattress or base layer ...
The company was founded in 1931 in Illinois as Sleeper, Inc. by 13 mattress manufacturers who licensed the Serta name. Subsequently, eight independent licensees acting like a cooperative owned the company. Afterwards, it was controlled and operated as Serta International by its largest licensee, National Bedding Company, which ultimately held ...
Mattress Barn was a chain of mattress stores located only in Florida. On August 29, 2014, it was announced that Mattress Firm would acquire all of the remaining Mattress Barn locations. [ 34 ] In September 2016, all of the remaining stores converted into Mattress Firm.
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