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Publication numberUS3138332 A
Publication typeGrant
Publication dateJun 23, 1964
Filing dateMay 14, 1962
Priority dateMay 14, 1962
Publication numberUS 3138332 A, US 3138332A, US-A-3138332, US3138332 A, US3138332A
InventorsGottlob Hinderer
Original AssigneePrice Pfister Brass Mfg Compan
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Aerator for faucets or the like
US 3138332 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

RG. l.

June 23., 1964 G. HlNDERr-:R 3,138,332

AERATOR FOR FAUCETS 0R THE LIKE Filed May 14, 1962 INVENTOR. 60 TTL 06 Afm/DEEE@ T TOQA/Eys.

United States Patent O 3,138,332 AERATOB FOR FAUCETS OR THE LIKE Gottlob Hinderer, Sylmar, Calif., assigner to Price-Pfister Brass Manufacturing Company, Los Angeles, Calif., a corporation of California Filed May 14, 1962, Ser. No. 194,390 2 Claims. (Cl. 239-427) This invention relates to the aeration of liquids, such as of a stream of water from a tap.

Aerators of various kinds, adapted to be connected to the spout of a faucet, are now in general use. These aerators cause fine bubbles of air to be entrained in the stream, whereby the tendency of the stream to splash when it hits a surface is greatly reduced.

The process of aeration is effected by first splitting the stream of water, passing air to the divided stream, and then recombining the divided stream.

It is one of the objects of this invention to provide a simple and effective aerator of this general character.

It is another object of this invention to provide separation or division of the stream by a compact and inexpensive spreader plate, that discharges the water as a series of small streams adjacent the periphery of the plate.

This invention possesses many other advantages and has other objects which may be made more clearly apparent from a consideration of several embodiments of the invention. For this purpose, there are shown a few forms in the drawings accompanying and forming part of the present specification, and which drawings, unless as otherwise indicated, are true scale. These forms will now be described in detail, illustrating the general principles of the invention; but it is to be understood that this detailed description is not to be taken in a limiting sense, since the scope of the invention is best defined by the appended claims.

Referring to the drawings:

FIGURE 1 is a sectional view of an aerator incorporating the invention, shown as installed on a nozzle.

FIGS. 2 and 3 are sectional views taken along the planes corresponding to lines 2-2 and 3-3 of FIG. 1;

FIG. 4 is a pictorial view of an aerator showing the parts in exploded position; and

FIG. 5 is a View similar to FIG. 1, of another form of the invention.

In FIG. 1 the nozzle 1 is shown as provided with an internally threaded ange 2. Engaging this flange is the exteriorly threaded upper portion 3 of the casing 4. The casing 4 has an inwardly directed flange 5 upon which may be tted a brass wire screen 6 of appropriate mesh (FIG. 4). Successive screens 7 and 8 are disposed above screen 6 and the screens are separated by the resilient rings 9 and 10. A similar ring 11 is disposed above the uppermost screen 8. These rings are preferably made of resilient rubberlike material such as nylon, which closely it the internal cylindrical surface of the casing 4.

Disposed at a substantial distance above the uppermost screen 8 is a plate 12. This plate 12 is shown in FIG. 2 as being provided with two annular rows of apertures 13 and 14 near the periphery of the plate 12 and spaced from the center of the plate. The plate 12 has an outwardly directed ange 15 disposed above the upper surface of the plate 12 to define a shallow recess 16. Overlying the ange 15 is a disc 17 having a center opening 18. Above the disc 17 is a rubber washer 19 seating on the shoulder 20 formed within the nozzle 1.

Inwardly directed ange 26 of the casing 4 engages the lower surface of the ange 15. Accordingly, as the casing 4 is threaded into the flange 2, the rubber washer ice 19 may be compressed by the force urging the flange 15 upwardly against the disc 17. A seal is thus effected between the aerator casing 4 and nozzle 1.

In order to provide aeration, the casing 4 has a series of openings 21 shown to best advantage in FIG. 2. These are formed as slots in the wall of the casing 4 and are adjacent the lower surface of the plate 12.

When water flows downwardly through the nozzle 1, it passes through aperture 18 and impinges upon the upper surface of the plate 12. The dispersed stream flows radially outwardly and then through the openings 13 and 14 at a point adjacent the slots or openings 21. Air is injected into the stream of water by the passage of the water in divided form past the openings 21. The stream of water then passes through the screens 8, 7 and 6 and finally discharges through the bottom of the casing 4. Aeration is accomplished through a relatively short travel of the stream. Since the openings 13 and 14 are quite a distance from the center of the plate 12, ample opportunity is afforded for the air passing through the inlet openings 21 to be inducted into the stream of water.

The form shown in FIG. 5 is substantially identical with the form shown in FIG. 1. In this case, however, the nozzle 22 is provided with external threads 23 adapted to be engaged by the internally threaded upper end 24 of the casing 25. Otherwise, this casing 25 is similar to casing 4; the casing 25 carries the identical parts 12 and 19 as well as the screens S, 7 and 6. The operation of both forms is identical.

The inventor claims:

l. In an aerator:

a generally circular plate having a series of apertures adjacent the periphery of the plate encircling a central area that is free from openings;

said plate having an axially offset flange extending radially outwardly;

a disc having a single central aperture, and peripherally seating on the plate flange, said disc defining with said plate a shallow space between the disc and the plate;

said central aperture being disposed in alignment with the said central area of said plate; and

a hollow casing having an upper inlet opening and a lower outlet opening;

said casing having an intermediate inwardly directed flange forming a surface facing the inlet opening of said casing;

said casing ange forming a seat for the plate flange whereby the plate is suspended so that it projects with clearance toward the outlet end of the casing from the level of said casing flange;

said casing having provisions for attachment to a nozzle;

said casing also having a series of lateral air inlet openings located at least partially above and partially below the level of the lower surface of the plate whereby air is entrained in the jet streams created by the apertures of the plate and at the area of said apertures.

2. The combination as set forth in claim 1 in which the casing is provided with a second inwardly extending flange to define the outlet opening, with the addition of one or more screens resting upon said second flange.

References Cited in the tile of this patent UNITED STATES PATENTS 2,633,343 Aghnides Mar. 3l, 1953 2,799,487 Aghnides July 16, 1957 2,849,217 Bachli et a1 Aug. 26, 195-8

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2633343 *Dec 2, 1948Mar 31, 1953Elie P AghnidesGas and liquid mixing device
US2799487 *Apr 22, 1954Jul 16, 1957Aghnides Elie PAerator with unitary molded inner assembly
US2849217 *Aug 13, 1954Aug 26, 1958Chicago Specialty Mfg CoAerators
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3288376 *Jun 11, 1964Nov 29, 1966Seth R MartinQuick-release coupling
US3388868 *Oct 29, 1965Jun 18, 1968Nalco Chemical CoFoam producing nozzle
US3435671 *May 11, 1966Apr 1, 1969Astro Dynamics IncTransportable wind tunnel
US3831860 *Dec 18, 1972Aug 27, 1974Wrightway Mfg CoLow flow volume shower head
US4345719 *Mar 31, 1980Aug 24, 1982Wpm, Inc.Water aerator
US4657186 *Oct 4, 1985Apr 14, 1987Shapiro Eugene BStream former
US4667884 *Mar 13, 1986May 26, 1987Braziel Bobby GPaint gun tip filter, atomizer and gasket combination
US5775596 *Apr 18, 1996Jul 7, 1998Premier Farnell Corp.Foam generating nozzle
US5816497 *Nov 7, 1996Oct 6, 1998Water Management Equipment Ltd.Water-saving diffuser and water distribution system having water fixtures with variable water-saving diffusers
US5839662 *Mar 18, 1997Nov 24, 1998Water Management Equipment Ltd.Water distribution system with variable water-saving diffusers
US6830062 *Sep 30, 2002Dec 14, 2004John R. MontpetitSpigot freeze dripper
US7357337 *May 31, 2005Apr 15, 2008Dyapason S.R.L.Flow regulator
US7364097 *Nov 18, 2005Apr 29, 2008Yoji OkumaShower head
US7374366 *Feb 21, 2006May 20, 2008Chang-Hua TasiWave generator
US8342429Oct 11, 2008Jan 1, 2013Neoperl GmbhSanitary outlet fitting
US20120104299 *Oct 29, 2010May 3, 2012Brice John LVenturi valve pressure compensator apparatus and method
CN101855408BOct 11, 2008May 30, 2012纽珀有限公司Sanitary outlet fitting
EP0135899A2 *Sep 14, 1984Apr 3, 1985FRIEDRICH GROHE ARMATURENFABRIK GmbH & COConcealed aerator which seals against a Spout when inserted therein
EP0216319A2 *Sep 18, 1986Apr 1, 1987Gottfried Dipl.-Ing. RuhnkeAerator for the nozzle of a water tap
WO1998019797A1 *Oct 30, 1997May 14, 1998David LeonWater distribution system with water saving diffusers
WO2009052961A1 *Oct 11, 2008Apr 30, 2009Neoperl GmbhSanitary outlet fitting
Classifications
U.S. Classification239/427, 239/428.5, 239/590.3
International ClassificationE03C1/084, E03C1/02
Cooperative ClassificationE03C1/084
European ClassificationE03C1/084
Legal Events
DateCodeEventDescription
Aug 24, 1987ASAssignment
Owner name: PRICE PFISTER, INC., 13500 PAXTON STREET, PACOIMA,
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PRUDENTIAL INSURANCE COMPANY OF AMERICAN, THE,;REEL/FRAME:004747/0743
Effective date: 19870710
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PRUDENTIAL INSURANCE COMPANY OF AMERICAN, THE,;REEL/FRAME:004747/0743
Owner name: PRICE PFISTER, INC., CALIFORNIA
Sep 8, 1986ASAssignment
Owner name: PRUDENTIAL INSURANCE COMPANY OF AMERICAN THE, C/O
Free format text: SECURITY INTEREST;ASSIGNOR:PRICE PFISTER, INC., A CORP. OF DE.;REEL/FRAME:004605/0690
Effective date: 19860711
Apr 16, 1984ASAssignment
Owner name: WELLS FARGO BANK, N.A., REGIONAL COMMERCIAL BANKIN
Free format text: SECURITY INTEREST;ASSIGNOR:PRICE PFISTER, INC., A CORP. OF DE;REEL/FRAME:004259/0685
Effective date: 19840328
Nov 23, 1983ASAssignment
Owner name: PRICE PFISTER, INC.
Free format text: CHANGE OF NAME;ASSIGNOR:PRICE PFISTER, NI INDUSTRIES, INC.;REEL/FRAME:004196/0672
Effective date: 19830627
Owner name: PRICE-PFISTER BRASS MFG. CO. 13500 PAXTON ST., PAC
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:NI WEST, INC.;REEL/FRAME:004196/0677
Effective date: 19830624