Abstract: A hyperbaric capsule has a base forming a seat that can be enclosed by an elongate oval canopy having a large transparent window formed therein. The bottom of the front of the canopy is pivotally attached to the front of the base by a hinge assembly and can be locked in the closed position on the base by a plurality of latches that are conjointly operated by an external lever and an internal lever. The weight of the canopy upon opening is borne by a pair of side gas or spring struts.

Abstract: The present invention relates broadly to a valve (10) comprising a valve body (14) connected to a valve member (16). The present invention relates broadly to a valve (10) comprising a valve body (14) connected to a valve member (16). The valve body (14) includes a fluid passageway (18) across which the valve member (16) is connected. The valve member (16) includes a plurality of valve elements such as (20A and 20C) which are moveably coupled to the valve body (14) to permit opening and closure of the valve (10). The valve member (16) includes a collapsible opening (22) located at or adjacent an apex of the conical-shaped valve member (16). The valve (10) includes a series of resilient hinges such as (30A and 30C) disposed about a perimeter of the valve member (16). The resilient hinges (30A and 30C) are substantially straight and configured to minimise the force required in deflecting the valve elements such as (20A) to open valve member (16) and expose the collapsible aperture (22).

Abstract: A water skimmer vessel has two hulls (12, 14) between which a debris collection net or basket-like catcher (22) is arranged. Hinged flaps (68) are provided at each end of the catcher and operate to allow inflow but block outflow of debris from the catcher. Each hull of the vessel is equiped with amoter covered by a guard (28). The vessel may move in either direction and is equipped with sensors (30) on each hulll for effecting the turning and reversing of the vessel upon contact with pool skimmer box inlet (206) and the vessel can be controlled to enter the dock and permit the contents of the catcher to be discharged into the current of pool water flowing into the skimmer box.