Method and apparatus for controlling a vacuum cleaner

• US 7,945,988 B2
• Filed: 10/13/2005
• Issued: 05/24/2011
• Est. Priority Date: 10/13/2005
• Status: Expired due to Fees

• Current Assignee: Techtronic Floor Care Technology Limited (Techtronic Industries Company Limited)
• Original Assignee: Techtronic Floor Care Technology Limited (Techtronic Industries Company Limited)
• Inventors: Gordon, Evan A.
• Primary Examiner(s): Redding; David A
• Application Number:
  US11/249,916
• Publication Number:
  US 20090049639A1
• Time in Patent Office: 2,049 Days
• Field of Search: 153/54, 153/55, 153/66, 153/19, 153/39
• US Class Current: 15/319
• CPC Class Codes: A47L 5/22 with rotary fans
• CPC Class Codes: A47L 5/225 Convertible suction cleaners, i.e. convertible between different types thereof, e.g. from upright suction cleaners to sledge-type suction cleaners
• CPC Class Codes: A47L 9/2836 characterised by the parts which are controlled
• CPC Class Codes: A47L 9/2842 Suction motors or blowers
• CPC Class Codes: A47L 9/2847 Surface treating elements
• CPC Class Codes: A47L 9/2857 User input or output elements for control, e.g. buttons, switches or displays
• CPC Class Codes: A47L 9/2894 Details related to signal transmission in suction cleaners
• CPC Class Codes: A47L 9/32 Handles

Abstract

A control system for a vacuum cleaner is disclosed. The control system includes a control pad for generating a number of user inputs. The control system further includes a serial controller for reading the state of the number of inputs and generating serial data in response thereto. The control system yet further includes a processor adapted to receive the serial data and generate control signals that controls a number of electric devices on the vacuum cleaner. A method of operating a vacuum cleaner is also disclosed.

Claims

1. A control system for a vacuum cleaner comprising:

a plurality of electric devices;

a control pad for generating a number of user inputs;

a serial controller for reading the state of the number of inputs and generating serial data in response thereto representing the state of the number of inputs; and

a processor connected to the serial controller by a control wire passing through at least one pivot joint of the vacuum cleaner and adapted to receive the serial data and generate control signals that controls at least one of the electric devices based on the serial data;

wherein one of the electric devices is a height adjustment motor.

2. The control system of claim 1, wherein one of the electric devices is a warning light that warns an operator of potential problems.

3. A control system for a vacuum cleaner including a nozzle, the control system comprising:

a plurality of electric devices including an agitator motor, a height adjustment motor, and a suction motor;

a control pad for generating a number of user inputs;

a serial controller for reading the state of the number of inputs and generating serial data in response thereto; and

a processor adapted to receive the serial data and generate control signals that controls a number of the electric devices;

wherein a single user input is converted to serial data which causes the processor to generate a plurality of control signals; and

wherein the single user input selects a hard floor mode input, and the controller generates signals which i) operate the agitator motor at reduced speed, ii) set the height adjustment motor to position the nozzle at a low height, and iii) operate the suction motor at substantially full power.

4. A method of operating a vacuum cleaner comprising the steps:

entering a number of user inputs;

converting the user inputs to serial data representing the user inputs;

receiving the serial data with a controller;

generating, at the controller, a number of vacuum cleaner control signals in response to the received serial data for controlling the operation of a plurality of electric devices included in the vacuum cleaner; and

controlling the speed of a height adjustment motor based on the vacuum cleaner control signals.

5. The method of claim 4, further comprising the step of controlling an illumination device.

6. The method of claim 4, wherein:

the entering step includes entering a single user input, and

the generating step includes generating a plurality of control signals.

7. The method of claim 6, wherein:

the single input is the selection of a hard floor mode, and

the generating step generates a control signal which i) operates an agitator motor at reduced speed, ii) set the height adjustment motor to position a nozzle at a low height, and iii) operates the suction motor at substantially full power.