Method of improving the overall operating efficiency of an...

Metal working – Method of mechanical manufacture – Electrical device making

Reexamination Certificate

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C029S447000, C029S458000, C029S459000, C029S598000, C134S006000, C285S381100, C403S273000

Reexamination Certificate

active

07143502

ABSTRACT:
A submersible robotic pool cleaner is provided with an integral sealed rechargeable battery and an inductive charging assembly, a first portion of which is mounted in the pool cleaner housing and during the charging, receives a second separate portion that is connected by a cable to a conventional power source. The pump motor drive shaft is treated with a specialized anti-friction lubricant composition to minimize frictional energy losses where the shaft contacts the seal(s) and any shaft bearing(s), to maximize efficiency and minimize the power consumption of the pump motor assembly and permit the pool cleaner to completely traverse the surfaces to be cleaned within the fully-charged power capacity of the battery.

REFERENCES:
patent: 5056213 (1991-10-01), Behnke et al.
patent: 6299699 (2001-10-01), Porat et al.
patent: 6886205 (2005-05-01), Pichon

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