Vacuum-cleaner floor head

• US 20020083552A1
• Filed: 01/02/2002
• Published: 07/04/2002
• Est. Priority Date: 02/19/1999
• Status: Active Grant

• Current Assignee: Wessel-Werk GmbH
• Original Assignee: Wessel-Werk GmbH
• Inventors: Dilger, Horst, Kaffenberger, Dieter, Steudtner, Hans-Joachim
• Granted Patent: US 6,675,438 B2
• Time in Patent Office: Days
• US Class Current: 15/373
• CPC Class Codes: A47L 9/06 with fixed, e.g. adjustably fixed brushes or the like
• CPC Class Codes: A47L 9/0613 with means specially adapted for picking up threads, hair or the like, e.g. brushes, combs, lint pickers or bristles pads
• CPC Class Codes: A47L 9/0653 with mechanical actuation, e.g. using a lever

Abstract

A vacuum-cleaner floor head has a base plate formed with an elongated mouth through which air is aspirated, a frame vertically displaceable between a lower position and an upper position, and a seal strip carried on the frame, engaging a floor underneath the head in the lower position, and clear of the floor in the upper position. The strip is elastomerically compressible, surrounds the mouth, and is sufficiently firm to support the head off the floor without substantial deformation during normal back and forth stroking of the head on the floor in the lower position of the frame. The strip has at least to a front side of the mouth a profiled lower surface formed with a plurality of alternating ridges and hollows so that in the lower position the ridges engage the floor and air can be aspirated through the hollows between the floor and the strip.

Claims

1. A vacuum-cleaner floor head for dry vacuuming of a smooth floor, the head comprising:

a base plate formed with an elongated mouth through which air is aspirated;

a frame vertically displaceable between a lower position and an upper position; and

a seal strip carried on the frame, engaging a floor underneath the head in the lower position, and clear of the floor in the upper position, the strip being annularly continuous and elastomerically compressible, surrounding the mouth, and sufficiently firm to support the head off the floor without substantial deformation during normal back and forth stroking of the head on the floor in the lower position of the frame, the strip having at least to a front side of the mouth a profiled lower surface formed with a plurality of alternating ridges and hollows, whereby in the lower position the ridges engage the floor and air can be aspirated through the hollows between the floor and the strip.

2. The improved vacuum-cleaner floor head defined in claim 1 wherein the strip is of a foamed plastic.

3. The improved vacuum-cleaner floor head defined in claim 1 wherein the strip is a plastic tube.

4. The improved vacuum-cleaner floor head defined in claim 1 wherein the strip is of needle felt.

5. The improved vacuum-cleaner floor head defined in claim 1 wherein the strip is straight and extends parallel to the mouth at the front side thereof.