Rechargeable vacuum with reduced AC voltage

Details Rechargeable vacuum with reduced AC voltage Rechargeable vacuum with reduced AC voltage

2005-12-22

2008-03-18

Ip, Paul (Department: 2837)

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Plural, diverse or diversely controlled sources of armature...

C318S109000, C318S497000, C310S06800R

Reexamination Certificate

active

07345437

ABSTRACT:
A motor is disclosed that operates on either AC outlet power or DC battery power with decreased power drop when switching between AC and DC power. The AC power to the motor may be stepped down by using a clipper circuit, while the DC power supplied to the motor may be increased by switching motor field windings from a series wound circuit to a parallel wound circuit. The motor may be used in a vacuum motor embodiment, or in other consumer devices that utilize electric motors.

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International Search Reportcorresponding to co-pending International Patent Application Serial No. PCT/US2006/031864, European Patent Office, dated Jan. 2, 2007, 6 pages.
Written Opinion of the International Searching Authoritycorresponding to co-pending International Patent Application Serial No. PCT/US2006/031864, European Patent Office, dated Jan. 2, 2007, 8 pages.

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