The term bellows is used by extension for a flexible bag whose volume can be changed by compression or expansion, but not used to deliver air. For example, the light-tight (but not airtight) bag allowing the distance between the lens and film of a folding photographic camera to be varied is called a bellows.
What NFL has lost the Super Bowl the most? The Buffalo Bills, the Denver Broncos, the Minnesota Vikings, and the New England Patriots have all lost four Super Bowls. Edit
What team has appeared in the Super Bowl the most? The Dallas Cowboys, the Pittsburgh Steelers and the New England  Patriots are tied with eight appearances each. The Steelers have  claimed a record six Super Bowl titles, whâ¦ile the Cowboys and the  San Francisco 49ers are tied for second place with five each.