Cleaning and liquid contact with solids – Processes – Using solid work treating agents
Patent
1998-12-17
2000-02-29
Moore, Chris K.
Cleaning and liquid contact with solids
Processes
Using solid work treating agents
15320, 15384, 134 21, B08B 104, B08B 310, B08B 504, A47L 1130
Patent
active
060304650
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates generally to the floor care field and, more particularly, to an upright extractor that utilizes a liquid to clean a carpet or like surfaces.
BACKGROUND OF THE INVENTION
Extractors that utilize a liquid to clean a carpet, upholstery or like surface are well known in the art. A typical state of the art extractor generally includes a cleaning liquid or diluted detergent delivery system comprising a container for holding the cleaning liquid, a stationary brush, a rotating agitator or a revolving scrubber for scrubbing the carpet or like surface to be cleaned; and a gravity feed or a pump for delivering the cleaning liquid to the surface to allow scrubbing and removal of the dirt. The typical state of the art extractor also includes a cleaning liquid recovery system comprising a recovery nozzle, a suction generating device, such as a motor driven fan and a dirty cleaning liquid recovery tank.
In order to provide the most effective and efficient cleaning action, it is imperative that the cleaning liquid is delivered deep into the carpet or other surface being cleaned so that deep, ground in dirt and soil may be removed by the extraction process. The present invention relates to a more efficient and effective mechanism for providing deep cleaning action and enhanced overall cleaning performance.
SUMMARY OF THE INVENTION
Accordingly, it is a primary object of the present invention to provide an extractor for the cleaning of carpets and like surfaces that is characterized by relatively simple and inexpensive construction and that provides reliable performance over a long service life.
Yet another object of the present invention is to provide an apparatus which furnishes more efficient and deep cleaning of soil and dirt from carpets and the like by means of a unique cleaning liquid delivery and agitator scrubbing system which functions to positively deliver cleaning liquid deep into the carpet being cleaned while also providing for scrubbing of the nap of the carpet in two opposed directions.
Additional objects, advantages and other novel features of the invention will be set forth in part in the description that follows and in part will become apparent to those skilled in the art upon examination of the following or may be learned with the practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the appended claims.
To achieve the foregoing and other objects, and in accordance with the purposes of the present invention as described herein, an improved extractor is provided for cleaning carpet or other similar surface capable of being cleaned by liquid extraction. The extractor may be generally described as including a housing supported for movement relative to the carpet to be cleaned and a handle for manipulating and controlling the extractor. The extractor also includes cleaning liquid delivery and cleaning liquid recovery systems both carried by the housing.
The cleaning liquid delivery system includes a cleaning liquid supply tank, first and second aligned agitators and either a gravity feed or a pump for delivering cleaning liquid from the supply tank for cleaning. The cleaning liquid recovery system includes a recovery nozzle, a vacuum generator and a dirty cleaning liquid recovery tank.
The extractor is characterized by a drive assembly for counterrotating the first and second agitators so that relative rotation of the first and second agitators along the nip defined therebetween is generally away from the housing and toward the carpet to be cleaned. This counterrotating action functions to part the carpet nap open to the base and propel the cleaning fluid deep into the nap to enhance penetration and, therefore, the cleaning effect being produced.
In accordance with another aspect of the present invention, the extractor is characterized by the provision of a manifold for receiving cleaning liquid from either a gravity flow system or a p
REFERENCES:
patent: 1268963 (1918-06-01), Gray
patent: 1596041 (1926-08-01), Young
patent: 1938068 (1933-12-01), Deutscher
patent: 2622254 (1952-12-01), Mendelson
patent: 3624861 (1971-12-01), Freiheit
patent: 3631558 (1972-01-01), Kovacevic
patent: 4426751 (1984-01-01), Nordeen
patent: 5018240 (1991-05-01), Holman
patent: 5299608 (1994-04-01), Bosyj
patent: 5406673 (1995-04-01), Bradd et al.
patent: 5493752 (1996-02-01), Crouser et al.
Marcussen Henry
Yoshida Toshiyuki
Matsushita Electric Corporation of America
Moore Chris K.
LandOfFree
Extractor with twin, counterrotating agitators does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Extractor with twin, counterrotating agitators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extractor with twin, counterrotating agitators will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-679160