DE2240851A1 - TOOL FOR CARPET CLEANING - Google Patents

Description

Priority: September 3, 1971, U.S.Ao i \ ir. 177 724

The invention relates to a tool for cleaning carpets and especially, but not exclusively, useful as a tool for cleaning shaggy floor coverings.

Cleaning shaggy floors, that's flooring with a relatively long plor, represents a special one Problem posed because of the length of each i'lor and its tendency to to flatten or bend into a base. For the sake of a better appearance, however, the jar of the surface in general should stand upright, and. therefore, the cleaning process should involve some work in order to get the pile back into place to straighten one's upright position. Using a usual vacuum cleaner nozzle for cleaning the flooring and then then the use of a rake-like device for raising the i'lor to an upright position is time-consuming, because it requires that two separate measures have to be carried out «, ·

A well-known tool for cleaning shaggy floors has an outlet opening for connection to a Vafcuummotor and a surface part contacting the carpet, which is provided with a plurality of air inlet openings which are in communication with the outlet opening, and a Mohrzahl provided with comparatively short calculation fingers with air inlet ducts, which are also connected to the outlet

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Orifice are connected, use of this type of nozzle is dormant However, the pinger on the carpet and so cause the closing of the air inlet ducts, which in turn interrupts the flow of air through the ducts »Therefore / this works Tool only has a limited degree of cleaning.

In contrast, the invention is characterized in that the prongs and inlets are separate alongside closed prongs.

Further features and advantages of the invention are derived from the following description of a preferred exemplary embodiment of the invention can be seen from the drawings, which show:

1 shows a longitudinal view of a vacuum nozzle according to the invention, partly broken away for the sake of greater clarity;

Fig. 2 is a plan view from above of the vacuum nozzle of Fig. 1, also partially broken away;

Fig. 3 is a plan view from below of the vacuum nozzle of Fig. Ί; FIG. 4 shows a cross section along line 4-4 of FIG. 1.

The drawings show a preferred embodiment ± KT of a nozzle 10 according to the invention. Nozzle 10 closes

Outlet opening

an upper housing part 12 with 7-14 and a lower housing part 16, formed with air inlet openings 18, which connect with the outlet opening to form an air passage communicate through the nozzle, -uer lower housing part 16 is equipped with closed prongs 22 and open prongs 24, which are also connected to the outlet opening 14 are.

The upper housing portion 12 comprises a generally rectangular member having a flat portion 26 and a first pair of generally parallel side walls 28 and a second pair of generally parallel side walls 30, which are shorter than and transverse to the side walls 28. A rib protrudes outwards around the walls 2b and 30 and serves to to fix the upper housing part 12 with respect to the lower housing part 16.

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As already mentioned, the upper housing part 12 is provided with a Outlet opening 14 'which is a generally cylindrical Includes member 34 which is integral with the housing and located midway along its length and after behind protrudes · the free jinde of the cylindrical member can be used with a line 20 through any conventional facility

which is not shown because it does not form part of the invention. The inner end of the cylindrical member 34 is in communication with the interior the upper housing part 12. The upper surface of the cylindrical member 34 on the flat part 26; is designed ~ s'Q ''., a decorative observation window 36 in the usual way to record. The attachment of the window to the housing is made not described, since this also does not form part of the invention. ;

There are a pair of inner longer sides 38 which extend downwardly from the underside of the upper flat portion 26 and are arranged parallel to the elongated side walls 28. The walls 38 also delimit the "upper part of a channel which will be discussed in more detail below. The walls 38 slope upwardly from the bottom edge of the side walls 30 and extend in a straight line near the cylindrical member 34. As best." apparent from Fig. 4, opens the inner end of the cylindrical member 34 in the rearmost side wall 38, sodas outlet opening 14 with the interior of Eanals in conjunction As also best shown in Flg. 4 seen warts extending internally threaded 40 e by down from the flat part 26, and the lower edges of the walls 38 are formed with a rib and shoulder 39.

The lower housing part 16 comprises a flat part 42, formed with a first pair of generally parallel side walls 44 and a second pair of. essentially. ehen parallel side walls 46, the latter being shorter than the oil side walls 44 and are formed transversely to these. the upper edges of the side walls 44 and 46 are provided with a shoulder 48 which has a rib 32 on the side walls 28

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and 30 cooperates to form a seal between the upper housing part 12 and the lower housing part 16. A pair of inner walls are provided between the side walls 44 and cooperate with the walls 38 to define a channel for the passage of air from the air inlet openings 18 and from the open prongs 24 to the outlet opening 14. The upper edges of the walls 50 are formed with a ridge and shoulder 51 which is complementary to the ridge and shoulder 39 on the walls 38 so that the air duct is also sealed. ~ & s is however to be noted that, during the creation of a channel is preferred, this is not necessary, and the interior of the nozzle could be hollow and free of obstacles.

How best from Pig. 4, internally threaded lugs 52 protrude upward and are in engagement with lugs 40 which are formed on the upper housing part 12. Appropriate fasteners 58 cooperate the threads in goods 40 and 52 together to hold the upper and lower housing sections together.

As mentioned earlier, closed tines are 22 and open Prongs 24 formed from the lower housing part 16. Closed prongs 22, protrude downward from the flat Part 42 out and .are arranged in two rows, Avobei each row is near a longitudinal edge of the flat portion. Each closed prong 22 is of generally frustoconical in shape when taken along a transverse line considered their longitudinal axis, for purposes which will be explained below. The open prongs 24 protrude also downwards out of the flat part 42, but by a slightly smaller distance than the closed prongs 22. The open prongs 24 are arranged in a row extending along a line generally parallel to the longitudinal edge of the planar portion and which is generally midway between the inner walls 50 is located.

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From Pig »1 it can be seen that the open prongs in with respect to the closed prong in a row around hers ■ adjacent closed tines are offset in the other row. It can also be seen that the open Prongs 24 are frustoconical when along a line viewed transversely to their longitudinal axes, and include a central channel 54, which at the free end of the prongs is open and communicates with the channel formed by walls 38 and 50.

Also formed in the flat part 42 are the air inlet openings 18, which are located along a line, which runs centrally between the walls 50 so that they are also connected to the interior of the channel which is formed by these walls and the walls 38. Air inlet openings 18 are generally aligned between adjacent closed tines in each row, and can the shape of openings formed in the flat portion 42 have ", but preferably extend air inlet openings 18 by the length of relatively short cylindrical sleeves 56, which consist of the flat part 42 stick out. The length of the sleeves 56 is such that the free end of the openings 18 at the tip of the pile of the flooring is located.

In use, the line 20 is with the cylindrical Link 34 is connected and the other end of the line is connected to a suitable dust bag and vacuum motor. When the vacuum motor is running and face part 42 of the Mse 10 is moved over a shaggy floor covering, this covering is due to the closed prongs 22 and open prongs 24 combed and cleaned by the air drawn through the open prongs and air inlet openings 18. Because of the frustoconical shape of the prongs 22 and 24 are they small enough not to have the pile close to the base. to damage, and strong enough near the flat part 42, to withstand a break.

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It should be noted that the cleaning effect of the nozzle actually works is a triple. First, in addition to combing the pile, the closed prongs 22 loosen dust and Dirt from the underlay of the floor covering, which is held in the air flow generated by the yakuum motor, and whereby the dirt is guided to the dirt bag aj through the nozzle. Furthermore, because the open prongs 24 are not so as far as the closed tines extend 2 2, they will always have a distance from the base of the floor covering, so that air can be drawn through the channels 54 and the Picks up dirt from the pile on the base. Further, take the air inlet openings 18, which are in the flat part 42 are formed, dirt from the vicinity of the top of the long pile of the flooring on. When using the inven proper tool is obvious that shaggy Bodeji coverings are cleaned and combed at the same time, moreover it should be noted that an improved cleaning effect is created for the covering. Finally, it should be noted that the tool according to the invention can also be used after the flooring has first been cleaned by a common device, which means an even better thorough Cleaning the flooring can be achieved.

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Claims (2)

Claims 1. ) Tool ζφη cleaning carpets, comprising an elongated housing, formed with an outlet opening for connection to the inlet of a vacuum motor with air inlet devices in connection with this outlet opening and with a plurality of prongs, characterized in that open prongs (24) and Air inlet means (18) are provided in addition to closed prongs (22). 2 ο tool according to claim 1, characterized in that the prongs (22, 24) in two rows located near the two edges of the elongated housing are which rows ran parallel to its major axis 3ο tool according to one of the preceding claims, characterized characterized that inlet facilities a large number of open prongs (24), which protrude from the housing, whereby the iianals (54) through the open prongs' (? 4) with the outlet opening (14) are connected" 4 «..erküeug according to claim 3, characterized in that the open prongs (24) VJN pin smaller piece from AEM housing projecting than the closed tines (22). 5ο tool according to claim 3 or 4, characterized in that the open prongs (24) in ejner Line as seen in the middle lengthways a flat portion (26) of the elongate housing extends between two of its edges. 6ο tool according to one of the preceding claims, characterized marked that further air intake means comprised a plurality of openings (18) formed in the housing 309811 / Π707
BATH ORIGINAL 7ο tool according to claim 6, characterized in that this plurality of openings (18) extends through a plurality of sleeves (56) protruding from the housing. 8o tool according to claim 6 or 7, characterized in that this plurality of openings (18) is located between adjacent pairs of the open prongs (24). 309811/0707 Blank page