Abstract: A pulmonary exercise device includes a tubular body with an air inlet, an air outlet and a mouthpiece. The air inlet is closed by a one-way valve arrangement which is resiliently biased using a spring. The air outlet is closed by a one-way valve arrangement which is resiliently biased closed by using a spring. In another aspect, the inlet and outlet are closed off by respective one way valves which prevent airflow in one direction and allow only a restricted flow in the other.

Abstract: The device includes a locator on the first member for locating an end section of the second member. A movable locking lever is mounted on the second member and an operating member is provided which enables the locking lever to be moved from a position in which the end section is locked in position on the locator by the locking lever to a further position in which the locking lever permits the end section to be separated from the locator. The operating member is a rotary member rotatable about the longitudinal axis of the second member and has a surface thereon which co-operates with the locking lever whereby rotation of the rotary member effects movement of the locking lever.

Abstract: A transportable stand construction system generally comprised of a plurality of seat modules. The system includes a support frame, support means on the support frame to be spaced from and normally parallel to a surface on which the system rests, and a floor-carrying member which is part of the seat module. Connecting means are arranged adjacent a rear end of the floor-carrying member and are locatable on the support means to position the rear end of the seat module substantially horizontally. The front end of the floor-carrying member is arranged to be supported directly by the surface beneath the system or by support means of a further support frame to be arranged at a lower level than the support means of the first support frame. The system also normally includes modular step members to provide gangways spaced at predetermined distances by a series of the seat modules.