US2562167A - Suction nozzle with work-operated valve - Google Patents

Description

July 31, 1951 r. E. D. BILDE sucnou NOZZLE WITH WORK-OPERATED VALVE File d Feb. 15, 1945 Patented July 31, 1951 UNITED STATES PATENT OFFICE SUCTION NOZZLE WITH WORK-OPERATED VALVE Tord Erik Daniel Bilde, Stockholm, Sweden,-'assignor to Aktiebolaget Elektrolux, Stockholm, Sweden, a corporation of Sweden Application February 15, 1945, Serial No. 577,963 In Sweden February 22, 1944 6 Claims. (Cl. 1 5 3ss 1 7 Thi invention relates to suction nozzles, and more particularly to a nozzle adapted to be connected with the suction hose of a vacuum cleaner and used for removing dust and dirt from a surface.

An object of the invention is to provide a device of this character having a number of sucpanying drawing, which forms a part of this specification and of which:

Fig. 1 is a side view of a nozzle in accordance with my invention;

Fig. 2 is a cross-sectional view on an enlarged scale taken on the line 2-2 of Fig. 1; and

Fig. 3 is a cross-sectional view of a portion of a nozzle in accordance with another embodiment of my invention.

The nozzle is adapted to be connected with the suction conduit of a vacuum cleaner by means of a tubular connection member ID, which is adapted to serve as a handle when operating the nozzle. As illustrated in the drawing, the front end I I of the nozzle tapers conically toward a rounded apex, so that the tapered nozzle portion, which is provided with a number of lengthened suction openings I3, is readily insertable into corners, which are otherwise difficult to get into, as for instance between back and seat cushions of a sofa, an easy-chair or the like. The suction openings I3, which are separated by rib-shaped portions I4 of the nozzle body, are closed from the inside by resilient walls I5, which may be forced inwardly and, when the nozzle is used, are individually opened when the nozzle is pressed against the object to 'be cleaned. hus only the valve member or members I5, to which pressure is actually applied, will be opened. In order to facilitate the inward movement, the resisilient walls I5 of the embodiment shown are provided with a number of rubber pins I6, which, of course, may be substituted by tufts of bristles or the like I6a, as illustrated in Fig. 3, depending on the purpose for which the nozzle is intended. For the device shown in the drawing the walls I5, carrying the pins I6, may suitably be made from one moulding of rubber, which may, be manufactured in a tapered mould, conforming to the configuration of the nozzle portion II, and be provided with longitudinal cuts at the portion intended to lie under the ribs I I. The elastic force of the walls I5 may then favourably be supported by internal spring members II of any suitable kind.

In view of the foregoing, it will now be understood that an improved suction nozzle has been provided in which the hollow body or tubular connection In is self-sustaining and defines a chamber arranged to be connected to a source of suction supply. In the substantially inflexible wall of the hollow body III are formedspaced apart apertures I3 which are distributed over a working region of the nozzle body and through which air and entrained foreign matter is drawn into the chamber by suction effect from the exterior of the body. The walls I5 serve as valve members for the apertures and the internal spring members II constitute resilient means .for biasing the valve members to a substantially closed position.

The rubber pins IE or bristles Ilia may be referred to as agitating elements or feeler members which are adapted to contact .a surface to be cleaned, such pins or bristles being depressed upon contacting such a surface and independently operable to open the valve member I5 associated therewith against the biasing action of the resilient means I 1. Moreover, the pins I6 and bristles IBa project exteriorly of the body or tubular connection I0 to promote agitation of the surface to be cleaned when the valve members I5 are closed and also when the pins or bristles are depressed sufliciently to open the valve member associated therewith. It will be understood that each of the valve members I5 move from its closed position a distance dependent upon the extent a feeler element associated therewith is depressed when contacting the surface being cleaned, thereby constantly varying the quantity of air drawn into th cham her through each aperture during manipulation of the body in a cleaning operation.

While one more or less specific embodiment of the invention has been described, it is to be understood that this has been done for the purpose of illustration only and that the scope of the invention i not to be limited thereby, but is to be determined by the appended claims.

What is claimed as new is: V

1. A suction nozzle comprising a hollow body defining a chamber having an opening adapted to be connected to a source of suction supply, the body including a substantially inflexible wall having spaced apart apertures distributed over a working region thereof and through which air and foreign matter therein is adapted to be drawn into the chamber from the exterior of the body by suction effect, valvemembers for the apartures, resilient mean for biasing the valve members to a substantially closed position, elements carried by the valve members for agitating a surface to be cleaned, the agitating elements being depressed upon contacting such a surface and independently operable to open the valve member associated therewith against the biasing action of theresilient means, and the agitating elements projecting exteriorly of the body to promote agitation of the surface to be cleaned when the valve members are closedand also when the agitating elements are depressed sufiiciently to open the valve member associated therewith.

2. A suction nozzle comprising a hollow body defining a chamber having an opening adapted to be connected to a source of suction supply, the body including a wall having apertures distributed over a working region thereof and through which air and foreign matter contained therein is adapted to be drawn into the cham berfrom the exterior of the body by suction efiect, valve members for the apertures, resilient means for biasing the valve members to a substantially closed position, bristles carried by the valve member for agitating a surface to be cleaned, the bristles being depressed upon contacting such a surface and independently operable to open the valve member associated therewith even when the wall is out of contact with and not bearing against the surface to be cleaned, and the bristles projecting exteriorly of the body to promote agitation of the surface to be cleaned when the valve members are closed and also when the bristles are depressed sufficiently to open the valve member associated therewith.

3. A suction nozzle comprising a hollow body defining a chamber having an opening adapted to be connected to a source of suction supply, the body including a substantially inflexible wall having apertures distributed over a working region thereof and throughwhich air and foreign matter therein is adapted to be drawn into the chambar from the exterior of the body by suction efiect, Valve members for the apertures, resilient means for biasing the valve members to a substantially closed position, means for stirring up foreign matter from a surface to be cleaned during manipulation of the body comprising bristles carried by said valve members, the bristles bein depressed upon contact-ing such a surface and independently operable to open the valve member associated therewith against the biasing action of the resilient means, and the bristles projecting exteriorly of the body to promote agitation of the surface to be cleaned when the valve members are closed and also when the bristles are depressed sufficiently to open the valve member associated therewith.

4. A suction nozzle comprising a hollow body defining a chamber having an opening adapted to be connected to a source of suction supply, the body including a substantially inflexible wall having slots or elongated apertures distributed over a working region thereof and through which air and'foreign matter therein is adapted to be drawn into the chamber from the exterior of the body by suction effect, elongated valve members for the apertures, resilient means for biasing the valve members to a substantially closed position, a plurality of elements carried by each valve member for agitating a surface to be cleaned, the agitating elements being depressed upon contacting the surface to be cleaned and independently operable to open the valve member associated therewith against the biasing action of the resilient means, and the agitating elements projecting exteriorly of the body to promote agitation of the surface to be cleaned when the valve mem bers are closed and also when the agitating elements are depressed sufficiently to open the valve member associated therewith.

5. A suctionnozzle comprising a hollow body defining a chamber having an opening adapted to be connected to a source of suction supply, the body including a substantially inflexible wall havin slots or elongated aperture distributed over a working region thereof and through which air and foreign matter therein is adapted to be drawn into the chamber from the exterior of the body by suction effect, flexible elongated valve members for the apertures, resilient means for biasing the valve members to a a substantially closed position, a plurality of elements carried by each valve member for agitating a surface to be cleaned, the agitating elements being depressed upon contacting a surface to be cleaned and independently operable to open the valve member associated therewith against the biasing action of the resilient means, and the agitating elements projecting exteriorly of the body to promote agitation of the surface .to be cleaned when the valve members are closed and also when the agitating elements are depressed suificiently to open the valve member associated therewith.

6. A suction nozzle comprising a self-sustaining hollow body defining a chamber having an opening adapted to be connected to a source of suction supply, the body includin a substantially inflexible wall having spaced apart apertures distributed over a working regionthereof andthrough which air and foreign matter therein is adapted to be drawn into the chamber from the exterior of the body by suction effect, valve members for the apertures, metallic resilient means for biasing the valve members to a substantially closed position, feeler elements for the valve members adapted to contact a surface to be cleaned, the feeler elements being depressed upon contacting such a surface and independently operable to open the valve member associated therewith against the biasing action of the resilient means, and the feeler elements projecting exteriorly of the body to promote agitation of the surface to be cleaned when the valve members are closed and also when the individual feeler elements are depressed sufiiciently to open the valve member associated therewith, each of the valve members moving from its closed position a distance dependent upon the extent a feeler element associated therewith is depressed when contacting the surface to be cleaned, thereby constantly varying the quantity of air drawn into the chamber through each aperture during manipulation 'of the body in a cleanin operation.

'IORD ERIK DANIEL BILDE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 217,164 Smith July 1, 1879 712,530 Herfert Nov. 4, 1902 734,704 Harrison July 28, 1903 978,984 Burdick Dec. 20, 1910 983,971 Baker Feb. 14, 1911 1,177,714 Lull Apr. 4, 1916 1,752,664 Forcier Apr. 1, 1930 1,888,570 Rice Nov. 22, 1932 1,994,868 Replogle Mar. 19, 1935 2,064,903 Ghignatti Dec. 22, 1936 FOREIGN PATENTS Number Country Date 170,721 Germany May 12, 1906

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