초록 ▼

In a spa water circulation system, the spa including wall structure facing toward a water reception zone and comprising a plurality of water pumps associated with the wall structure, the pumps spaced about the zone, and oriented to receive water intake from the zone and to discharge water streams in

In a spa water circulation system, the spa including wall structure facing toward a water reception zone and comprising a plurality of water pumps associated with the wall structure, the pumps spaced about the zone, and oriented to receive water intake from the zone and to discharge water streams into the zone; each pump including water pumping structure, and there being structure for controlling pumping operation of the structure.

대표청구항 ▼

[ I claim:] [1.] For use in a water circulation device for a spa having wall means facing toward a water reception zone, the combination comprisinga) housing means adapted for carriage by said wall means,b) pumping structure associated with said housing means,c) and control means for controlling pum

[ I claim:] [1.] For use in a water circulation device for a spa having wall means facing toward a water reception zone, the combination comprisinga) housing means adapted for carriage by said wall means,b) pumping structure associated with said housing means,c) and control means for controlling pumping operation of said pumping structure,d) there being inlet and outlet porting provided to create a simultaneous intake and discharge of fluid, so as to balance and cancel or reduce an associated momentum change, which in turn reduces forces imposed on said wall means,e) there being an inner chamber within which a movable part of the pumping structure is reciprocable, and from which water is discharged relatively forwardly to said outlet porting, said part having forward and rearward sides,f) and there being an outer passage extending outwardly of and about said inner chamber, and to which water is drawn via said inlet porting, said outer passage communicating with a rear side of said inner chamber to deliver water to the rearward side of said part, said inlet and outlet porting, said inner chamber, and said outer passage being within said housing means.