DeCrane Aircraft Seating has announced a patent on core technology around which a new line of lightweight 9-g and 16-g executive single and double passenger seats is being built for super-midsize and large business jets. The patent covers design of a new positive locking brake mechanism to control seat rotation that allows infinite swivel adjustment. At the same time, it prevents uncommanded rotation. According  to DeCrane, the new line will have a number of other improvements, among them linear bearing tracking, fewer parts, lighter weight and improved function. The seats are also designed for easier upholstery work and installation than previous seats.