Nozzle for a fluid vacuum cleaning system

• US 5,797,161 A
• Filed: 07/12/1994
• Issued: 08/25/1998
• Est. Priority Date: 07/12/1994
• Status: Expired due to Term

• Current Assignee: Productions Metal Forming, Inc.
• Original Assignee: Production Metal Forming, Inc.
• Inventors: Campbell, Joanne Marie
• Primary Examiner(s): MOORE, CHRISTOPHER K
• Application Number:
  US08/273,637
• Time in Patent Office: 1,505 Days
• Field of Search: 15/321, 15/322, 15/421
• US Class Current: 15/322
• CPC Class Codes: A47L 11/34 Machines for treating carpets in position by liquid, foam, or vapour, e.g. by steam
• CPC Class Codes: A47L 11/4044 Vacuuming or pick-up tools; Squeegees
• CPC Class Codes: A47L 11/4088 Supply pumps; Spraying devices; Supply conduits
• CPC Class Codes: A47L 7/0009 with means mounted on the nozzle; nozzles specially adapted for the recovery of liquid
• CPC Class Codes: A47L 9/02 Nozzles suction nozzles for fluid transport B65G51/00

Abstract

A nozzle for a fluid vacuum cleaning system for simultaneously applying a cleaning fluid and a vacuum force to a surface is provided. The nozzle includes a hollow, rigid wand attached to a suction chamber and a cleaning fluid dispenser head. The suction chamber consists of a front plate and a rear plate which are connected together by a top plate and a pair of opposing side plates. The suction chamber has an open free end in the shape of a narrow slit and further includes at least one aperture positioned on the rear plate. As the cleaning fluid dispenser head sprays a fluid on a surface, the suction chamber removes moisture and dirt from the material being cleaned. The apertures on the rear plate serve to draw in any excess liquid that has accumulated on the surface.

Claims

1. A nozzle for a fluid vacuum cleaning system, comprising:

a hollow, rigid wand having one end adapted for attachment to a vacuum hose pipe of a vacuum cleaner;

a rear plate defining an opening for receiving an opposite end of said wand, said rear plate extending from said wand at an angle to the longitudinal axis of said wand;

a front plate spaced from said rear plate a predetermined distance and connected to said rear plate by a pair of opposing side plates and a top plate, said plates forming a suction chamber having an open end for contact with a surface to be cleaned; and

at least one aperture defined by said rear plate, adjacent to a bottom edge of said rear plate, and spaced from said edge a predetermined distance for drawing in fluid from said surface being cleaned.

2. The nozzle as defined in claim 1, wherein portions of said side plates extend rearwardly from said rear plate, forming a trap for entrapping fluid and for expediting the suction of said fluid.

3. The nozzle as defined in claim 1, wherein said rear and front plates extend from said longitudinal axis of said wand at different angles.

4. The nozzle as defined in claim 1, further comprising a cleaning fluid dispenser head disposed on said wand for dispensing cleaning fluid on said surface to be cleaned adjacent said rear plate.

5. The nozzle as defined in claim 4, wherein said cleaning fluid dispenser dispenses said fluid uniformly over an area of said surface substantially equal to the width of said rear plate.

6. The nozzle as defined in claim 1, wherein there are two spaced apertures defined by said rear plate.

7. The nozzle as defined in claim 6, wherein one of said spaced apertures is positioned adjacent one of said side plates.

8. The nozzle as defined in claim 7, wherein both of said spaced apertures are positioned adjacent to each of said opposing side plates.

9. The nozzle as defined in claim 6, wherein the cross-sectional area of said spaced apertures are substantially less than the cross-sectional area of said wand where said wand attaches to said rear plate.

10. A nozzle for a fluid vacuum cleaning system, comprising:

a hollow, rigid wand having one end adapted for attachment to a vacuum hose pipe of a vacuum cleaner;

a rear plate angularly attached to an opposite end of said wand defining an opening for receiving said wand;

a front plate spaced from said rear plate a predetermined distance and connected to said rear plate by a pair of opposing side plates and a top plate;

a suction chamber formed by said rear plate, said front plate, said top plate and said opposing side plates and having an open end for contact with a surface to be cleaned;

a cleaning fluid dispenser head supported on said wand for dispensing cleaning fluid on said surface to be cleaned adjacent to said rear plate; and

at least one aperture defined by said rear plate, adjacent to a bottom edge of said rear plate, and spaced from said edge a predetermined distance for drawing in fluid from said surface being cleaned.

11. The nozzle as defined in claim 10, wherein portions of said side plates extend rearwardly from said rear plate, forming a trap for entrapping fluid and for expediting the suction of said fluid.

12. The nozzle as defined in claim 10, wherein said rear and front plates extend from said longitudinal axis of said wand at different angles.

13. The nozzle as defined in claim 10, wherein said cleaning fluid dispenser dispenses said fluid uniformly over an area of said surface substantially equal to the width of said rear plate.

14. The nozzle as defined in claim 10, wherein there are two spaced apertures defined by said rear plate.

15. The nozzle as defined in claim 14, wherein one of said spaced apertures is positioned adjacent to one of said side plates.

16. The nozzle as defined in claim 15, wherein both of said spaced apertures are positioned adjacent to each of said opposing side plates.

17. The nozzle as defined in claim 14, wherein the cross-sectional areas of said spaced apertures are substantially less than the cross-sectional area of said wand where said wand attaches to said rear plate.

18. A fluid vacuum cleaner for cleaning the surfaces of upholstery, carpets, and the like with a cleaning fluid, comprising:

means for creating and maintaining a vacuum in a vacuum chamber;

a vacuum hose pipe connected to said vacuum chamber at one end and to a rigid, hollow wand at an opposite end;

a rear plate attached to said wand, defining an opening for receiving said wand, said rear plate extending from said wand at an angle to the longitudinal axis of said wand;

a front plate spaced from said rear plate a predetermined distance and connected to said rear plate by a pair of opposing side plates and a top plate, said plates forming a suction chamber having an open end for contact with a surface to be cleaned;

a cleaning fluid dispenser head supported on said wand for dispensing cleaning fluid on said surface to be cleaned adjacent to said rear plate; and

at least one aperture defined by said rear plate, adjacent to a bottom edge of said rear plate, and spaced from said edge a predetermined distance for drawing in fluid from said surface being cleaned.

19. The fluid vacuum cleaner as defined in claim 18, wherein portions of said side plates extend rearwardly from said rear plate, forming a trap for entrapping fluid and for expediting the suction of said fluid.

20. The fluid vacuum cleaner as defined in claim 18, wherein said rear and front plates extend from said longitudinal axis of said wand at different angles.

21. The fluid vacuum cleaner as defined in claim 18, wherein said cleaning fluid dispenser dispenses said fluid uniformly over an area of said surface substantially equal to the width of said rear plate.

22. The fluid vacuum cleaner as defined in claim 18 wherein there are two spaced apertures defined by said rear plate.

23. The fluid vacuum cleaner as defined in claim 22, wherein one of said spaced apertures is positioned adjacent to one of said side plates.

24. The fluid vacuum cleaner as defined in claim 23, wherein both of said spaced apertures are positioned adjacent to each of said opposing side plates.

25. The fluid vacuum cleaner as defined in claim 22, wherein the cross-sectional areas of said spaced apertures are substantially less than the cross-sectional area of said wand where said wand attaches to said rear plate.