Patent ID: 7555812
Filing Date: 2009-07-07
Classification: A47L

Abstract:
1. A brushless vacuum cleaner comprising: a base unit having a front, a rear, a right side, a left side, a top, and a bottom forming a front right corner, a front left corner, a rear right corner, and a rear left corner and formed with a vacuum chamber extending from said bottom to said top; a pair of wheels connected to said rear of said base unit wherein one of said pair of wheels is connected to said rear right corner of said base unit and said other of said pair of wheels is connected to said rear left corner of said base unit; a plurality of air injectors connected to said base unit, wherein said air injectors are arranged in a plurality of rows and spaced from one another within each row; a pump case connected to said base unit; a vacuum agitation unit connected to said pump case; a vacuum motor connected to said pump case; a collection unit connected to said pump case; a handle connected to said collection unit; a plurality of control switches connected to said handle; and a pair of horizontally adjustable casters connected to said bottom surface of said base unit wherein said casters adjust horizontally by sliding on their axles in an axial direction of said casters.