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Publication numberUS3006022 A
Publication typeGrant
Publication dateOct 31, 1961
Filing dateAug 10, 1959
Priority dateAug 10, 1959
Publication numberUS 3006022 A, US 3006022A, US-A-3006022, US3006022 A, US3006022A
InventorsMamontov Vladimir A
Original AssigneeMamontov Vladimir A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Vacuum cleaner wand head
US 3006022 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Oct. 31, 1961 v. A. MAMONTOV VACUUM CLEANER WAND HEAD Filed Aug. 10, 1959 INVENTOR. VLADIMIR A. MAMONTOV BY l d/w ATTORNEY States The present invention relates to the construction of a vacuum cleaner wand head in which an air driven motor operates a rotary beater. The wand is particularly adapted for use with a readily movable tank type vacuum cleaner or with a fixed suction unit. In either case, a rigid tubular wand handle is connected by means of a flexible hose to a vacuum or suction, creating machine which, when operating, moves air thru the wand head and the rigid tubular handle, the flexible tube and the vacuum producing machine. The head is provided with a suction opening that is adapted to be placed in opposition to the surface, such as a rug or other material, to be cleaned; the beater operates in the head and has. a plurality of rug contacting elements adapted to each repeatedly contact the surface of such rug or other material as the beater rotates; and the beater is belt driven by the air motor which is in the form of a. multiple turn air screw located inside of the tubular wand and coaxial therewith.

There are, in the prior art, air driven beaters in wand heads such as shown by Best, 1,078,185, November 11, 1913, but none is known that has the compactness and cooperating features which makes the presently disclosed device so desirable in construction and operation.

Having in mind the defects of the prior art devices, it is an object of the present invention to construct a wand head with a beater driven by an air screw motor having its screw located in the heads tubular handle and coaxial thereof.

A further object of the invention is the construction of the wand "head so that the beater reel may be easily removed therefrom, and so that the belt drive may be easily replaced or adjusted.

Another object of the invention is the construction of the beater so as to provide a plurality of material contacting elements that are heavy, have a large radius of gyration related to the axis of rotation of the beater, and are devoid of radial stiffness with respect to the beater axis so that the radial stiffness of the beater does not constitute a load on the beater drive, and so that the beater load will decrease as the beater slows. down so as to prevent stalling thereof.

A still further object of the invention is to provide the head with a plurality of guides which properly space the beater from a material surface, rub, or scrape, such surface, and channel air across such surface.

The above mentioned objects and others that will be apparent hereinafter are achieved by a construction in which a wand head is provided with a plurality of angularly related ribs on its material to be cleaned contacting surface adjacent the elongated rectangular suction opening of the head to provide scraping edges and air slots leading to the suction opening; a brush adjacent such opening; a beater inside the head with its shaft parallel to and coextensive with the elongation of such opening, and having, from such shaft, radially extending wire loops with the free end of each loop threaded thru a metal ring that serves as a hammer, or swingle, for the beater; and integral with the head a short portion of the tubular wand handle, in which is placed an axial flow air screw which is adapted to drive the beater thru a belt and to derive its power from the flow of air thru the head and wand handle to the suction unit.

A device conforming to the construction outlined above atent ice is hereinafter described in detail and shown in the accompanying drawings, in which:

FIGURE 1 is an elevational view of the wand head, mainly in section transverse medially of the beater shaft thereof and of the wand handle.

FIGURES 2, 3, and 4 are sectional views and FIGURE 5 is a view, on the lines 2--2, 3-3, 44, and 55, respectively, of FIGURE 1.

In the drawings, there is shown a wand head 11 which has integral therewith and faired' thereto, an air fan housing 12 which, also, serves as a short section of a tubular wand handle of which a small portion 13 of the lower part thereof is shown joined to the fan housing. The wand head 11 is provided with a cylindrical beater casing 14', having formed therein an elongated rectangular inlet opening 16. Contiguous with, in the plane of, and continuous peripherally of such opening is a plate 17 that serves as the sole plate of the head and which plate is adapted to rest on a material to be cleaned. The lower face of the sole plate is provided with a plurality of spaced apart angularly related ribs 18 which provide air slots 19 between adjacent ribs. The ribs are angularly related in that those on the left half of the surface are at an angle to those on the right half. The ribs on a half are parallel to each other; and all ribs are at the same angle to the edge of opening 16. Further, the ribs are at an angle to the elongated direction of the suction opening so that as the ribs slide along the surface of the material to be cleaned they will not leave groove marks and their edges will scrape loose foreign matter adhering to the material so that the air streams between the ribs will pick up and remove such matter from the material. Also, the ribs being at an angle to the direction in which the head is normally, usually, moved over the material surface, all portions of the surface will be exposed to the slots, no portion will be blanked by a rib. Along the back side of the casing 14, there is provided a downwardly opening brush slot 21 in which is guided a brush 22 with its bristles projecting downwardly from the slot and thru the sole plate 17 so as to contact and brush a surface as the head moves thereover. A keeper plate 23 at each end of the slot is secured to the underside of the sole plate to retain the brush in its slot. Suitable springs 24 urge the brush downwardly against a surface and toward or against the keepers 23.

Inside of the beater casing 14 is a beater reel assembly 26 which consists of a reel shaft 27, a flanged pulley 28 which is coaxial of the shaft, evenly spaced apart and radial of said shaft, wire loops 29 that are arranged parallel to the shaft 2'7 in two diametrically opposed uniseriate rows, and metal annuli 31, the head of each loop being threaded thru the opening of an annulus 31. In the drawings, the annuli 31 are shown as if held away from the shaft 27 by centrifugal force. One end of the shaft 27 is journalled in a fixed end of the casing and the other end is journalled in a removable casing end 32 that is held in the open end of the casing by a pair of spring detents 33, each of which is secured to the removable end and each of which has a portion fitting in a recess 34 formed in the inside of the casing adjacent the open end. With this construction, the reel 26 may be easily removed from the casing 14 by first removing the casing end 32. In FIGURES 2 and 5, the assembly of beater shaft, wire loops, and annuli has been rotated ninety degrees from the showing in FIGURE 1.

In the air fan housing 12. is an air screw assembly 36 that has an air screw shaft 37 which has secured thereto a single elongated helical ribbon 38 that is on edge with respect to the shaft, a pair of shaft hangers 39, 40, one adjacent each end of the shaft, extending across the housing, and having a bearing in each for the shaft. The lower hanger rests against a stop 42 formed with and inside of the housing, and both hangers may be pressed into place or secured to and inside of the housing in any suitable manner. Thrust collars such as the one 43 shown may. be secured to the shaft 37 and bear against a shaft-bearing in a hanger. A coned pulley 44 is secured to and coaxial of the shaft 37 at its lower end, the end closest to the reel 26, and an endless fiat belt 46 passes between and around the two pulleys 28, 44. The bearings of both shafts 27, 37 may be of the ball type. A hatch 47 is provided in the fairing between the head and the fan housing for access to the pulleys and the belt. The hatch is closed by a cover 48 which is held in place by a pair of spring clips 49, each of which is secured to the cover and engages inside the hatch opening edge.

The disclosed device is operated by providing a suitable suction source connected to the wand handle 13 and, thus to the air fan housing 12 so that a required amount of air will flow thru the air fan housing 12 and over the air screw 36, and thru the beater casing 14, entering thereto thru the casing inlet opening 16. The air screw helical ribbon 38 is so shaped in proportion to the air velocity that it will provide the power necessary to turn the beater reel at its desired rate under the given working conditions. The two pulleys 28, 44 are proportioned to give this rate. The energy gives to the air stream is sufficient to so drive the fan and reel, and to do the needed entraining of dirt, lint, or dust found on the material being operated on by the reel and its hammers. With the beater being properly driven, the head 11 is placed on the surface of the material to be cleaned with the sole plate 17 and the brush 22 in contact therewith, and the beater hammers 31 repeatedly hitting such material. The hammers loosen the dust and dirt for the air flowing thru the head to pick up and carry such to the suction unit. The brush 22 and the edges of the ribs 13, also, aid in loosening dust and dirt for removal by the air stream thru the head. The hammer annuli 31 act much in the manner of free bodies in their contacts with the material being cleaned. This is due to their being loosely secured to the wire loops 29 for pivotal, rotational, and translational movement. Each annulus can rotate in its plane, and, due to its large center opening, it can swing on the head of the loop and the loop head can move across the annulus opening. This freedom of the annuli means that the reel unloads as it slows down. The beater does not need to flex the loops. The arrangement of the loops in uniseriate rows parallel to the reel shaft 27 allows the annuli of a row to act in unison on the surface of the material to be cleaned. They vibrate the material to loosen the dirt adhering thereto.

Having thus described my invention, an embodiment thereof, and its operation, I claim:

1. A suction wand head, having: a tubular handle, a head, as part of the head thereof, an elongated beater casing secured to an end of and with its elongation transverse said handle, a beater reel rotatably mounted in said casing and coextensive with the elongation thereof, said casing having formed therein a rectangular air opening whose length is substantially coextensive with said reel and casing elongations, said handle and said casing being so connected that air may how in said opening, thru said casing, and then into and thru said handle; an air driven axial flow fan motor mounted in said handle with its axis coaxial of the axis of said tubular handle; means connecting said fan to said reel whereby rotation of said fan Will rotatably drive said reel, said motor being driven by the flow of such air thru said handle; said reel having a shaft for so mounting said reel, loops along and extending radially of said shaft, and loosely threaded on each of said loops an annulus adapted to act as a swingle, said reel, loops, and annuli being so proportioned that portions of each annulus, upon rotation of said reel, are extensible thru said casing air opening a particular radial distance related to said reel, and each said annulus being loose enough on its said loop so that it may move radially thereof at least said particular radial distance; and secured to said casing a shelf surrounding said opening and in the plane thereof, and ribs formed in the face of said shelf which is away from said casing, said ribs being at an acute angle to the direction of elongation of said casing and coextensive with one edge of said shelf.

2. The combination of claim 1 in which said shelf has a slot formed therein parallel to the elongation of said opening and across said opening. from said ribs, said slot being open in said face, and in said slot a brush having bristles extending outside of said slot.

3. The combination of claim 2 in which said loops are arranged in diametrically opposed uniseriate rows parallel to said shaft.

References Cited in the file of this patent UNITED STATES PATENTS 1,265,790 Kirby May 14, 1918 1,883,851 Felty Oct. 18, 1932 1,952,999 Lucke Mar. 27, 1934 2,570,759 Bramhall Oct. 9, 1951 FOREIGN PATENTS 38,834 Denmark Tune 4, 1928 501,190 Italy Sept. 1956 513,286 Germany Nov. 25, 1930 648,413 Germany July 30, 1937 781,510 France Feb. 25, 1935

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1265790 *Feb 17, 1915May 14, 1918James B KirbyAgitating device for vacuum-cleaner nozzles.
US1883851 *Jul 2, 1928Oct 18, 1932Mae F GroverBeater for cleaning rugs
US1952999 *Oct 23, 1922Mar 27, 1934Hoover CoSuction cleaner
US2570759 *Mar 28, 1950Oct 9, 1951Gen ElectricVacuum cleaner nozzle with retractable floating brush
DE513286C *Nov 25, 1930Ernst Claassen Dipl IngStaubsaugermundstueck
DE648413C *Feb 17, 1935Jul 30, 1937Siemens AgSaugduese fuer Staubsauger mit einer mit Schlagkoerpern versehenen Schwinghebeleinrichtung
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FR781510A * Title not available
IT501190B * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3761997 *May 26, 1971Oct 2, 1973Frazier JVacuum cleaner
US3786532 *Jun 19, 1972Jan 22, 1974Vacu Maid IncCarpet sweeper
US4145791 *Nov 18, 1977Mar 27, 1979Hanes CorporationRoll cleaning apparatus
US6269519 *Oct 15, 1999Aug 7, 2001Esteam Manufacturing Ltd.Duct cleaning device
EP2653085A2 *Apr 2, 2013Oct 23, 2013LG Electronics Inc.Vacuum cleaner and suction nozzle for vacuum cleaner
EP2653085A3 *Apr 2, 2013Apr 1, 2015LG Electronics Inc.Vacuum cleaner and suction nozzle for vacuum cleaner
EP2676592A2 *Jun 13, 2013Dec 25, 2013LG Electronics, Inc.Vacuum cleaner and suction nozzle for vacuum cleaner with agitator and striking member
EP2676592A3 *Jun 13, 2013Dec 3, 2014LG Electronics, Inc.Vacuum cleaner and suction nozzle for vacuum cleaner with agitator and striking member
Classifications
U.S. Classification15/364, 15/386, 15/387
International ClassificationA47L9/04
Cooperative ClassificationA47L9/0416
European ClassificationA47L9/04B4