Abstract: The invention provides a design innovation to conventional air passenger seats. The design innovation relates to the positioning of IFE boxes. For a better understanding, the reader may recall the last flight in the airline seat and the way the passenger's leg room was inhibited by a box mounted on the seat leg in front of the passenger. The new design innovation repositions (or “pancakes”) the IFE box underneath the seat pan.

Abstract: The invention provides a design innovation to conventional air passenger seats. The design innovation relates to the positioning of IFE boxes. For a better understanding, the reader may recall the last flight in the airline seat and the way the passenger's leg room was inhibited by a box mounted on the seat leg in front of the passenger. The new design innovation repositions (or “pancakes”) the IFE box underneath the seat pan.

Abstract: Systems for supplying emergency oxygen or other gases to persons are addressed. The systems may include pod assemblies mounted on fixed-position masts between or adjacent passenger seats or pop-up modules installed within upper portions of seat backs. The pod assemblies and pop-up modules additionally may include other passenger-service equipment. Also optionally included in the systems are modular central gas supplies and alternative oxygen mask designs for passengers.

Abstract: Addressed are couplings for transferring rotational motion from one shaft to another. The couplings may include flexible components and may be designed to accommodate angular, axial, and parallel misalignments. Included as components of the couplings may be hub portions, each having dowel pins and clearance holes, and a center member positioned intermediate the hub portions.

Abstract: Structures and assemblies for stowable tables and similar objects are detailed. Versions of the assemblies may cooperate with pivoting covers mounted to vehicle seats for purposes of deploying and retaining the tables. Other versions may include tables biased to fit snugly in recessed portions of backrests of seats, with compression of the biasing mechanism occurring sometimes when backrests are reclined and expansion of the mechanism occurring sometimes when the tables are deployed. Yet other versions may include tables latching to bars or other objects protruding rearward from the backrests.

Abstract: Adjustable seats and components thereof are detailed. The seats, particularly (although not exclusively) useful in commercial aircraft, permit substantial angular recline without the corresponding rearward linear movement necessarily occurring in conventional seats. The seats additionally may have discontinuous, or non-integral, seat bottoms, with the heights of the forward portions of the bottoms being adjustable mechanically. Tray tables optionally associated with the seats further omit any central slot and may define one or more pivot axes in locations different than exist in conventional seats.