Abstract: An adjustable seat cushion for use on a support surface such as the seat of a motorcycle. The seat cushion is cellular and laterally spreadable inwardly or outwardly depending on the space between the ischial tuberosities of a user seated on the cushion for improved comfort. In an embodiment, the cellular cushion cups the buttocks and also tilts the pelvis of a user seated on the cushion forward for enhanced seated stability.

Abstract: A composite foam base air cell module cushion having a water resistant skin, a contoured foam base designed to relieve pressure on the trochanters and the ischia and an air cell module having two sets of air cells, each partially filled, positioned inside the foam base in a chamber beneath the rear of the base. The skin is of two layer construction with a two-way stretch outer layer and a water impervious inner layer. The bottom of the base is covered with a water impervious sheet and the edges are secured to the edges of the top skin covering. The air cell is made by placing the preformed top into molds smaller in depth than the air cells to partially collapse the air cells before a base is applied to the top to close the open ends of the air cells and trap air therein.

Abstract: A stable and highly maneuverable lighter-than-air aircraft is provided. The aircraft includes a body portion which is supported beneath a balloon portion by a stem or axle. The balloon is fillable with a lighter-than-air gas and is sized to accept sufficient amounts of gas to make the aircraft buoyant. The balloon portion is rotationally fixed to the axle and the axle is rotationally journaled in the body. Thus, the balloon portion can rotate relative to the body portion and the body can selectively be rotated relative to the axle. A motor is housed in the body portion and is operable to propel the aircraft in a desired direction. The aircraft is operated such that the balloon portion rotates above the body portion without rotating the body portion. The rotation of the balloon portion provides stability to the aircraft and the ability for the body portion to rotate about the axle enables the aircraft to be highly maneuverable.

Abstract: An inflatable cushion is organized into zones or compartments which are normally isolated from each other. The base of the cushion contains channels which lead from the several zones to a flap-type valve. When the flag is extended, the channels are connected through a manifold in the valve. However, when the flap is folded over upon itself, the channels are blocked before the manifold and the zones are isolated. Having separate and isolated zones, the cushion provides improved stability and better serves to maintain the user in a desired posture. A modification has individual fill valves and stems for each zone and for the manifold.