Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2000-05-26
2003-02-04
Stinson, Frankie L. (Department: 1746)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S420000, CD32S032000
Reexamination Certificate
active
06513192
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to nozzles or suction heads for vacuum apparatus.
BACKGROUND OF THE INVENTION
A wide variety of nozzles or suction heads for vacuum cleaners and vacuum apparatus are old and well-known in the art. U.S. Pat. No. 1,000,383 issued Aug. 15, 1911, to O. Drake for “Shoe for Vacuum Cleaners” shows a vacuum nozzle or shoe for a vacuum cleaner. This nozzle includes an interior vacuum chamber and a bottom plate with slots or openings therein. The slots include stock or wedding, apparently to prevent dirt from dropping back through the slots when the vacuum cleaner is not running. U.S. Pat. No. 5,398,361, issued Mar. 21, 1995, to K. Cason for “Vacuum Cleaner for Submerged Non-Parallel Surfaces” discloses a vacuum pool cleaner with a nozzle having an open bottom face. U.S. Pat. No. 2,280,751, issued Apr. 21, 1942, to H. Davis for “Vacuum Cleaner Nozzle” discloses a vacuum cleaner nozzle having a plurality of slots in a bottom plate opening through the plate into a relatively deep vacuum nozzle chamber leading directly to the vacuum hose. The nozzle is intended for dry vacuuming, being provided with an electrostatic bottom plate.
OBJECTS OF THE INVENTION
The principal object of the present invention is to provide an improved nozzle or suction head finding particular but not necessarily exclusive utility for vacuum removal of water or other liquids from a surface such as a carpet and/or fabrics including upholstery, padding, garments, mattress and wall coverings, etc.
Another object of the present invention is to provide a nozzle or suction head of the foregoing character which efficiently and rapidly removes standing water, stain removal solutions and other liquids from fabric or carpeting installed on a floor.
A further object of the present invention is to provide an improved nozzle or suction head of the foregoing character which increases the flow of water therethrough upon the application of suction to facilitate rapid and thorough removal of water and thereby prevent moisture damage to a carpet, its pad and/or floor.
SUMMARY OF THE INVENTION
The present invention is embodied in an efficient vacuum nozzle for removing liquid from a surface which may be almost any surface. It works well on carpeting and extremely well on padded carpeting.
The nozzle or suction head is formed by a nozzle body defining a shallow, internal, enclosed vacuum chamber. A vacuum source connector is in fluid communication with the chamber and is adapted to receive a vacuum source conduit or hose.
The nozzle body also defines an outer bottom surface and a plurality of vacuum suction ports opening between the chamber and the nozzle body's bottom surface. As such, when the nozzle is connected to a vacuum source, its movement across a water or fluid saturated surface effects removal of water therefrom through the ports and chamber to the vacuum source.
Each port preferably has a throat portion opening into the chamber and a conical outer enlarged portion opening into the bottom surface. In a preferred embodiment of the nozzle, the outer surface of the vacuum source connector serves as a handle for the nozzle.
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Brian D. Smith, P.C.
Stinson Frankie L.
LandOfFree
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