A Murphy bed is a bed that is folded up into a wall or closet area. Murphy beds provide extra space in confined living quarters.
Murphy beds were first patented in 1916 and produced by the Murphy Wall Bed Company. In 1989, the courts ruled that the term Murphy bed was not trademarked and was viewed as a generic term for any bed that folded into the wall or cabinet.
With the use of counterbalances, it is almost impossible for the bed to fold up while in use. However, the folding up of the bed at inopportune times has been portrayed in various movies.