VACUUM-CLEANER POWER-BRUSH ATTACHMENT

• US 20110078871A1
• Filed: 10/01/2010
• Published: 04/07/2011
• Est. Priority Date: 10/02/2009
• Status: Abandoned Application

• Current Assignee: Wessel-Werk GmbH
• Original Assignee: Wessel-Werk GmbH
• Inventors: KAFFENBERGER, Dieter, DILGER, Horst
• Application Number:
  US12/896,168
• Publication Number:
  US 20110078871A1
• Time in Patent Office: Days
• US Class Current: 15/301
• CPC Class Codes: A47L 9/0411 driven by electric motor
• CPC Class Codes: A47L 9/2878 Dual-powered vacuum cleaners, i.e. devices which can be operated with mains power supply or by batteries

Abstract

A power-brush attachment usable in combination with a line-voltage source and with a vacuum-cleaner suction intake has a housing having a lower wall formed with an opening and a connection—suction tube and/or hose—on the housing engageable with the suction intake. The housing has a passage extending between the connection and the opening for drawing particles in the opening. A rotary brush in the housing is exposed in the opening and engageable therethrough with a floor underneath the housing. A low-voltage electric motor is connected to the brush for rotating same. A low-voltage power source, typically a battery, in the housing is also connectable to the motor for powering same without connection to the line-voltage same. A power converter and electrical line are connectable between the line-voltage source and the electric motor for powering the motor from the line-voltage source.

Claims

1. In combination with a line-voltage source and with a vacuum-cleaner suction intake, an attachment comprising:

a housing having a lower wall formed with an opening;

a connection on the housing engageable with the suction intake, the housing having a passage extending between the connection and the opening for drawing particles in the opening;

a rotary brush exposed in the opening and engageable therethrough with a floor underneath the housing;

a low-voltage electric motor connected to the brush for rotating same and powerable by line voltage and low-voltage direct current;

a low-voltage power source in the housing connectable to the motor for powering same without connection to the line-voltage same; and

an electrical line connectable between the line-voltage source and the electric motor for powering the motor from the line-voltage source.

2. The combination defined in claim 1 wherein the low-voltage power source is a battery or a fuel cell.

3. The combination defined in claim 1 wherein the low-voltage power source is a rechargeable battery.

4. The combination defined in claim 1 wherein the electric motor is a suitable brushless BLDC motor.

5. The combination defined in claim 1 further comprising

a separable connection between the electrical line and the electric motor.

6. The combination defined in claim 1, further comprising

a suction tube connectable between the housing and the suction intake.

7. The combination defined in claim 6 wherein the electrical line extends at least partially along the suction tube.

8. The combination defined in claim 1, further comprising

a power converter including a rectifier between the electric line and the meter.

9. The combination defined in claim 8 wherein the source is a rechargeable battery connected to the converter for charging while the attachment is running off line voltage.