Abstract: A brooch including a support fixed in a housing, two flaps pivotally coupled to the support, a rod fixed in the housing, a board fixed on the rod, two rotary members pivotally coupled to the board, and a shaft rotatably engaged on the rod and having two cams engaged with the flaps and the rotary members so as to rotate the flaps and the rotary members.

Abstract: A combination back support for use during stretching and/or sitting with the legs extended/not extended. The device includes a substantially rectangular lumbar back support with a multiplicity of pairs of inelastic straps configured in a first configuration to engage the feet of the user and in an alternative configuration to engage the knees of the user. When the user is in one of the various seated positions, the straps are connected to form loops which are fitted over either the feet or knees of the user. As the user applies pressure with the feet or knees, the lumbar rectangular support is pulled tight around the user's lower back, providing ample support.

Abstract: A pneumatic cushion for a wheel chair and the like is disclosed which comprises an air plenum box, a plurality of air openings in the air plenum box, and a plurality of air channels communicating with an air supply. The air channels communicate with the air openings to deflate and inflate individual air sacks carried over the air openings. The air sacks are unattached so that they act individually. An air distribution manifold includes a rotating blocking member to periodically block air distribution to the air sacks allowing them to deflate. The air sacks are constructed from a fabric having a low air permeability. The blocked air sacks thus allow air to escape through the sacks for deflation which cools the portion of the occupant seated on the cushion while allowing temporary pressure relief during deflation. The air sack inflation system is open so that, in addition, pressure may be relieved by a backward flow of air through the system.