Other Uses
Cellular phones are the most popular use of the clamshell form factor. The design is also used on some landline phones, particularly cordless phones. Other devices using the flip form include laptop computers, subnotebooks, the Game Boy Advance SP the Nintendo DS and the Nintendo 3DS though these are less frequently described as "flip" or "clamshell" compared to cellular phones.
Other appliances like pocket watches, waffle irons, sandwich toasters, krumkake irons and the George Foreman Grill have long utilised a clamshell design; a very similar concept is used in racing and road legal cars, like the Ford GT40 and Ferrari Enzo, where the whole rear end can be lifted to access the engine compartment and suspension system.
Bookbinders build clamshell boxes in which valuable books or loose papers can be protected from light and dust.
It is also an informal name for General Motors full-size station wagons (manufactured 1971–1976), that featured a complex, two-piece "disappearing" tailgate, officially known as the "Glide Away" tailgate.
Read more about this topic: Flip (form)