Abstract: A whirlpool bath designed for use in hospitals and similar institutions has a tub which is raised sufficiently above the floor level on a recessed steel base so as to allow a vertical clearance for the use of trolleys and mobile patient-handling equipment to move patients toward and lower patients into the whirlpool bath. The recess also makes work around the tub easier for attendants, providing toe room allowing the attendants to move closer to the tub. Bumper strips and base moldings are attached to the whirlpool bath to protect the bath from damage from movable patient-handling equipment. The sides and ends of the tub have removable panels fitting under the rim of the tub and clipping to a steel frame for rapid and easy removal and replacement. A capped opening in the built-in plumbing allows the water supply from a wall-mounted mixing valve to be admitted directly to the tub through the whirlpool fittings as an alternative to a spout or hose.

Abstract: A skimmer assembly adapted for installation through an opening in a pool wall from the rear side thereof to mask the otherwise exposed edges of the wall opening, includes a circular type weir involving a float having means for offering resistance to dropping of the float in response to operation of the pool pump, whereby to minimize and stabilize the layer of water flowing over the weir.

Abstract: A sump pump system includes a remote pressure responsive switch assembly designed for a wall plug and having a plug in connection for the pump motor cord, the pressure responsive switch assembly also having an air pressure connection to the sump pump for actuating the switch in response to a rise in level of water around the pump.

Abstract: A system for pumping of liquid under pressure, in which a pressure switch is adapted to control the starting and stopping of the pump within a safe pressure range, and in the event of malfunction of the pressure switch, the service line and associated plumbing is isolated from the pump to protect against development of pressures in the serviceline which might damage the plumbing.