Patent ID: 9272237
Filing Date: 2016-03-01
CPC Classification: B01D,B08B,B23K,H02H

Claim Text:
1. An extractor system comprising: a blower disposed in a portable base unit and configured to produce a positive pressure gas stream and a negative pressure gas stream; a three-phase motor coupled to the blower to drive the blower in rotation, the motor being electrically coupled to receive three-phase power through a plug configured to be plugged into a three-phase receptacle of a power grid source; and a rotational direction reversing switch connected between the motor and the plug and configured to be manually or automatically switched to reverse the direction of rotation of the motor, wherein the rotational direction reversing switch is configured to receive the three-phase power from the power grid source, and wherein the rotational direction reversing switch is configured to reverse the direction of rotation of the motor based on inputs received from each phase of the three-phase power of the power grid source.