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Robert W Stiles, Lars Hoffmann Berthelsen, Ronald B Robol, Christopher R Yahnker, Everett Cox, Donald Steen, Kevin Murphy, Walter J Woodcock Jr, Daniel J Hruby, Peter Westermann Rasmussen, Gert Kjaer, Einar Kjartan Runarsson, Arne Fink Hansen, Alberto Morando, Florin Lungeanu, Nils Ole Harvest: Control algorithm of variable speed pumping system. Pentair Water Pool and, Quartes & Brady, September 13, 2011: US08019479 (21 worldwide citation)

A pumping system includes a pump for moving water. In one aspect, this is in connection with performance of an operation. The system includes a variable speed motor operatively connected to drive the pump. A value indicative of flow rate of water is determined and the motor is controlled to adjust t ...


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Wilson Roy E: Shaft seal. Allen Bradley Company, Quartes & Brady, December 17, 1974: US3854733 (9 worldwide citation)

A seal for a rotary shaft extending through a bushing that has a sleeve in an annular space between the shaft and the bushing, and a flange projecting radially outward from one end of the sleeve that includes a circumferential lip turning back over the sleeve to fit around an edge of the bushing. Th ...