Vacuum cleaner nozzle

• US 5,564,161 A
• Filed: 02/01/1994
• Issued: 10/15/1996
• Est. Priority Date: 02/16/1993
• Status: Expired due to Term

• Current Assignee: Wessel-Werk GmbH & Co. KG
• Original Assignee: Wessel-Werk GmbH & Co. KG
• Inventors: Glatz, Dietmar
• Primary Examiner(s): Scherbel, David
• Assistant Examiner(s): Till, Terrence R.
• Application Number:
  US08/190,340
• Time in Patent Office: 987 Days
• Field of Search: 15/393, 15/396, 15/397, 15/398, 15/401, 15/415.1
• US Class Current: 15/415.1
• 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 9/0626 Rigidly anchored lips, e.g. nozzles adapted for picking up liquids

Abstract

The vacuum cleaner nozzle of the present invention has a nozzle body with a suction pipe connecting piece and a bottom plate which closes off the nozzle body towards the bottom, whereby the bottom plate is provided with at least one flow channel open towards the bottom to allow air to flow into a suction channel centrally connected to the suction pipe connecting piece, said nozzle body being provided with sealing or closing elements which surrounds the flow channel at least in part. The nozzle body and the bottom plate are made in the form of a one-piece supporting base into which the flow channel or the flow channels and the suction channel are directly molded. The sealing or closing elements in the form of bristle strips and/or sealing lips are molded directly into the bottom plate and/or are pressed, injected or glued into it. This design reduces the number of components of the vacuum cleaner nozzle considerably so that a significant simplification is achieved with respect to manufacture and assembly.

Claims

1. Vacuum cleaner nozzle having

a nozzle body, said nozzle body provided with

a bottom,

a suction channel, said suction channel having an outlet, said suction channel further having an end,

a suction pipe connecting piece, and

a bottom plate closing said nozzle body towards said bottom, whereby said nozzle body and said bottom plate are made into a one-piece supporting base, said bottom plate is further provided with at least one flow channel, said flow channel having a longitudinal axis, a bottom, a depth, a forward edge, a rear edge, and an outer end, said flow channel further open towards said bottom of said nozzle body, said flow channel further constructed and arranged to allow air to flow into a central suction channel connected to said suction pipe connecting piece, said flow channel surrounded at least in part by sealing elements, wherein said flow channel and the suction channel are molded directly into said one-piece supporting base with said nozzle body, wherein the flow channel is double-parabolic.

2. Vacuum cleaner nozzle as in claim 1, wherein said flow channel is essentially parallel to the front and rear edges of said supporting base.

3. Vacuum cleaner nozzle as in claim 1, comprising at least one forward roller, said roller being installed in said flow channel near said outer end, said roller constructed and arranged to substantially close off said flow channel from the outside.

4. Vacuum cleaner nozzle as in claim 1, wherein said suction channel has a strip of thread lifters which is located directly in front of said suction channel, said strip of thread lifters being directly molded during the manufacture of said supporting base.

5. Vacuum cleaner nozzle as in claim 1, wherein said forward edge and said rear edge of said flow channel are made at least in part as flow sealing edges which are perpendicular to said longitudinal axis of said flow channel.

6. Vacuum cleaner nozzle as in claim 5, wherein said flow sealing edges are formed on said bottom plate with a first sealing edge formed in front of said forward edge of said flow channel and a second sealing edge formed on said bottom plate behind said rear edge of said flow channel, said sealing edges further being inclined at least slightly with respect to the horizontal.

7. Vacuum cleaner nozzle as in claim 1, wherein said suction pipe connecting piece is an articulated connection which can be snapped in with a first end at said outlet of said suction channel, said suction pipe connecting piece further constructed and arranged to allow a second end to be removably connected to the suction pipe of a vacuum cleaner.

8. Vacuum cleaner nozzle as in claim 1, wherein at least one rear roller is installed near said end of said suction channel on the same side as said suction pipe connecting piece.

9. Vacuum cleaner nozzle as in claim 1, wherein said sealing elements comprise sealing lips, said sealing lips being made of an elastomer material.