Patent ID: 7174604

Claim:
A vacuum cleaner, comprising: a main body housing a suction generating device and a filtering device; a suction nozzle coupled to the suction generating device in the main body and configured to suck air containing foreign substances; a handle coupled to the main body and configured to be gripped by a user while the vacuum cleaner is in use; and a control switch installed on the handle and configured to control an on/off operation of the vacuum cleaner and to control a suction power of the suction generating device, wherein the control switch comprises: a sliding electrical switch mounted on the handle and having a slide element that is capable of causing the suction generating device to turn on and off, and capable of controlling an amount of suction provided by the suction generating device; an indicator mounted on the handle and having markings to indicate different suction power levels; and a sliding knob mounted over the indicator and configured to be moved, by the user, to selectively overlie different portions of the indicator to provide an indication of the suction power level setting of the vacuum cleaner in combination with the indicator, wherein the sliding knob includes a connection portion that is coupled to the slide element of the sliding electrical switch such that the slide elements moves with the sliding knob.