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Publication numberUS3378858 A
Publication typeGrant
Publication dateApr 23, 1968
Filing dateJun 17, 1965
Priority dateJun 17, 1965
Publication numberUS 3378858 A, US 3378858A, US-A-3378858, US3378858 A, US3378858A
InventorsJacuzzi Candido
Original AssigneeJacuzzi Bros Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Drain assembly
US 3378858 A
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Description  (OCR text may contain errors)

April 23, 1968 c. JACUZZI 3,378,858

DRAIN ASSEMBLY F119d June 1965 2 Sheets-Sheet l AWWWTMYS JV!) j (Al/A l W, \\l|\\ I I l I 9 k 7/ mg z- INVENTOR CANDIDO JACUZZI BY WARREN BROSL ER,CYPHER GANGLIM ATTORNEYS April 23, 1968 c. cum 3,378,858

DRAIN ASSEMBLY Filed June 17, 1965 2 Sheets-Sheet 8 INVENTOR.

CANDIDO JACUZZI BY WARREN, BROSLER, CYPHER GANGLIM ATTORNEYS United States Patent 3,378,858 DRAIN ASSEMBLY Candido Jacuzzi, Lafayette, Calif., assignor to Jacuzzi Bros., Incorporated, a corporation of California Filed June 17, 1965, Ser. No. 464,692

3 Claims. (Cl. 4-172) ABSTRACT OF THE DISCLOSURE A drain assembly for a swimming pool, having a cover including a ring, a central imperforate portion covering substantially the entire area bounded by said ring, and a plurality of short substantially radial ribs supporting said central portion slightly above the plane of the ring whereby all flow into such drain must be substantially horizontal and radial to preclude vortexing.

My invention relates to swimming pools or the like and more particularly to a main drain assembly for such pools.

In the construction of swimming pools, a main drain is installed in the floor or bottom of the pool, which drain has at least one outlet for connection to the suction side of the pool pump, from which it is pumped through a filter then back to the pool.

Such drain is usually also provided with another opening similar to the discharge opening to the pump, the second opening being provided for the installation of a hydrostatic relief valve which functions to relieve the pressure of ground water when the pool is being drained for maintenance or other reasons.

'Heretofore, it has been the practice to provide the main drain with a cover in which slots extend over essentially the full diameter thereof to form a grate. With this type of cover, when the water level reached a low point in the pool during draining, a vortex would form, permitting air to enter the suction line of the pump and cause the pump to lose prime. This could occur when there was still as much as one foot of water left in the pool.

Also, during normal use of a swimming pool having such a drain, the vertical downward flow of water developed in the course of normal circulation for filtering purposes, constituted a hazard to weak swimmers caught in such flow.

To discourage this, a supplemental cover was installed over the grate, such cover involving a solid top with a depending flange having slotted openings therein causing water to enter parallel to the floor of the pool preliminary to entering the grate, and in this manner eliminated the downward flow and prevented vortexing.

Among the objects of my invention are:

1) To provide a novel and improved drain assembly for swimming pools and the like;

(2) To provide a novel and improved drain assembly of simple construction and capable of performing the combined functions of the conventional grate and antivortex cover described;

(3) To provide a novel and improved drain assembly for swimming pools or the like, which lends itself to fabrication from materials such as plastic.

Additional objects of my invention will 'be brought out in the following description of the preferred embodiment of the same, taken in conjunction with the accompanying drawings, wherein:

FIGURE 1 is an exploded view of the drain assembly of the present invention in its prefered form; and

FIGURE 2 is a view in section depicting the drain assembly of FIGURE 1, as installed in the bottom a swimming pool or the like.

ice

Referring to the drawings for a description of my invention in its preferred form, the same involves a substantially cylindrical drain body 1, having a side anchor flange 3, and a bottom 5, from which depends a tubular projection 7 for flow coupling the drain body to the suction line of a pump (not shown), and a similar tubular projection 9 for installation of a hydrostatic relief valve (not shown).

Adjustably receivable into the cylindrical drain body is a grouting ring 11 of a diameter approaching that of the drain body and formed with a peripheral flange 13 adapted to overhang the upper edge of the drain body.

The drain body and grouting ring are installed in the pool bottom 15, the side flange 3 of the drain body, providing means for anchoring the same in the concrete of the pool bottom, while the grouting ring is adjusted to bring its flange 13 substantially into the plane of the bottom, thus enabling one to adjust for variations in thickness to the side flange 3 of the drain body.

The grouting ring is adapted to slidably receive a cover 19, the cover including a base ring 21 having an upper ring surface 23, and a dome shaped center portion 27 supported above the plane of the upper ring surface by a plurality of radially oriented ribs 29 anchored to the ring surface and defining with such surface and said dome shaped central portion, a plurality of substantially horizontal flow passageways 31 into the drain assembly. Such flow passageways perform both the function of the grate and the function of the antivortex cover of the conventional drain assembly described above as representative of the prior art.

At spaced locations about the lower edge of the grouting ring, the grouting ring is formed with inwardly directed lips 33 to be engaged by the lower edge of the cover and thus determines the proper assembled position of the cover in the grouting ring.

The drain assembly as thus described, lends itself to being molded of plastic, the use of which material further lends itself to the molding of the cover with slits 35 in the base ring thereof, to impart resiliency and flexibility to such base ring, and if slightly flared, the cover may be dimensioned to snugly fit into the grouting ring while still being removable, if desired. Preferably, however, I prefer a somewhat loose fit of the base ring, and provide thin friction ribs 37 located diametrically on the outer surface of the base ring to frictionally retain the cover in its installed position in the grouting ring.

From the foregoing description of my invention in its preferred form, it will be apparent that the same satisfies all the objects attributed thereto, and while I have illustrated and described the same in considerable detail, it will be apparent that the preferred form is subject to alteration and modification without departing from the underlying principles involved, and I accordingly, do not desire to be limited in my protection to the specific details illustrated and described, except as may be necessitated by the appended claims.

I claim:

1. A drain assembly cover for a pool drain assembly and adapted to preclude vortexing as the water level approaches pool bottom during draining, comprising a base ring having an upper ring surface, a central circular imperforate portion covering substantially the entire area bounded by said ring, and a plurality of short radial ribs located about said upper surface and supporting said central imperforate portion slightly above the plane of said upper ring surface to provide a plurality of horizontal flow passages whereby all flow into such drain must be substantially horizontal.

2. A drain assembly for a swimming pool or the like a grouting ring of a diameter approaching that of said comprising drain body and adjustably receivable therein, said a substantially cylindrical drain body having side grouting i h i a i h l flange i li i h anchor means a a bottom, Said bottom including the upper edge of said drain body to limit the exmeans for flow coupling said drain body to the suC- 5 tent of reception of said ring in said drain body, non hne a P and means for mstauatlon of and a cover slidably receivable in said grouting ring, a hydmstatlc rehef valve said cover including a. base collar having an upper a grouting ring of a diameter approaching that of said drain body and adjustably receivable therein, said grouting ring having a peripheral flange in line with the upper edge of said drain body to limit the extent of reception of said ring in said drain body,

ring surface, and a dome shaped center portion supported above the plane of said upper ring surface by a plurality of ribs anchored to said ring surface and defining with said surface and said dome shaped n a cover slidably receivable in Said grouting ring, central portion, a plurality of substantially horizonsaid cover including a base collar having an upper tal flow paths into Said drain assembly, Wherebyw ring surface, and a center portion supported above function both as a grate, and to preclude VOTWXing the plane of said upper ring surface by a plurality as the water level approaches pool bottom during of ribs anchored to said ring surface and defining draining. with said surface and said central portion, a plurality References Cited of substantially horizontal flow paths into said drain UNITED STATES PATENTS body, whereby to function both as a grate, and to preclude vortexing as the water level approaches 1,434,254 10/1922 Sanders 210163 pool bottom during draining. ,963, 00 1934 ing 210163 3. A drain assembly for a swimming pool or the lik 3,246,582 4/1966 Wade et a1 4l46 comprising a substantially cylindrical drain body having a side FOREIGN PATENTS anchor flange and a bottom, said bottom having a 681,958 1964 a tubular projection therefrom for flow coupling said drain body to the suction line of a pump, and an- LAVERNE D. GEIGER, Primary Examiner.

other tubular ro'ect' f t 1 static relief li Ion or ms a1 anon of a hydro HENRY ARTIS, Assistant Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1434254 *Mar 3, 1922Oct 31, 1922American Foundry & Mfg CompanyRoof drain
US1963300 *Jan 9, 1933Jun 19, 1934Leo J CorboyImproved drainage fixture
US3246582 *Sep 11, 1962Apr 19, 1966Wade IncAdjustable square drain
CA681958A *Mar 10, 1964Josam Products LtdAdjustable floor drain fixture
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3667611 *Feb 11, 1970Jun 6, 1972Andrew L PansiniSwimming pool leaf trap
US3742525 *Jun 8, 1971Jul 3, 1973American Brass & AluDrain fitting
US3884809 *Jun 28, 1973May 20, 1975Logsdon Duane DScupper drain structure
US3932281 *Dec 12, 1974Jan 13, 1976Pansini Andrew LLeaf trap kit for swimming pools
US4085761 *Oct 6, 1976Apr 25, 1978Hobart CorporationDrain filter for a dishwashing machine
US4302918 *Jul 20, 1979Dec 1, 1981Paraisten Kalkki Oy - Pargas Kalk Ab.Plug
US4368550 *Apr 10, 1981Jan 18, 1983Stevens Gunther AMethod and apparatus for winterizing a swimming pool
US4596656 *Jun 13, 1984Jun 24, 1986Jope Manufacturing Co. Inc.Hydrotherapy water return fitting for tubs and spas
US4602391 *Oct 17, 1985Jul 29, 1986Pearl Baths Inc.Dynamically balanced suction relief for hydrotherapy tubs and spas
US4652365 *Apr 13, 1984Mar 24, 1987Oy KonteklaWaste screen
US4658449 *Sep 19, 1985Apr 21, 1987Martin Daniel RProctective adapter for pool drain
US4707257 *May 29, 1986Nov 17, 1987The Graver CompanyAir/water distributor underdrain
US5028322 *Jul 11, 1989Jul 2, 1991The Graver CompanyLow profile underdrain strainer assembly with improved distribution/fastening means
US5341523 *Mar 15, 1993Aug 30, 1994Caretaker Systems, Inc.Anti-vortex drain
US5378356 *Oct 1, 1993Jan 3, 1995Lsp Specialty Products CompanyRoof drain structure
US5409604 *Apr 25, 1994Apr 25, 1995Norwalk Wastewater Equipment CompanyClosure for a wastewater treatment mechanism
US5650065 *Jan 22, 1996Jul 22, 1997Sewell; William J.Skimmer cover for dry well in a catch basin
US5689928 *Feb 26, 1996Nov 25, 1997Metalcraft Spinning & Stamping (Tor.) Ltd.Roof drain and method for making same
US5734999 *Jan 24, 1997Apr 7, 1998John J. NicholasSafety device for swimming pools
US5799339 *Oct 17, 1996Sep 1, 1998American ProductsSafety cover for spa suction drain
US5864897 *Jan 21, 1997Feb 2, 1999Ross; Terence D.Device for isolating piping associated with a swimming pool
US6209586 *Dec 1, 1999Apr 3, 2001James R. WrightAggregate retaining device for drain covers
US6269493Oct 12, 1999Aug 7, 2001Edwin C. SorensenBreakaway drain cover
US6340035Mar 5, 2001Jan 22, 2002James R. WrightAggregate retaining device for drain covers
US6397408 *Jul 17, 2000Jun 4, 2002Polaris Pool Systems, Inc.Ramped cap unit for a main pool drain cover plate
US6442774 *May 4, 2001Sep 3, 2002Certikin International Ltd.Cover means
US6557588Jan 22, 2002May 6, 2003Splash Pool Plastics, Inc.Aggregate retaining device for drain covers
US6594966 *Nov 6, 2001Jul 22, 2003Craig J. FroeterRoof drain comprising housing forming manifold having open top, primary outlet in communication with manifold, backup drain pipe extending through manifold having top opening positioned above open top of drain housing, and backup outlet
US6615417Nov 2, 2001Sep 9, 2003World Wide Sports, LlcAnti-entrapment swimming pool and wading pool main drain cover and method
US6817043 *Nov 15, 2002Nov 16, 2004Leif Alexander ZarsSafety swimming pool replacement drain cover apparatus and method
US6833067 *May 14, 2003Dec 21, 2004Sita Bauelemente GmbhDevice for draining flat roofs, balconies, terraces or other flat structures
US7178179Jul 23, 2004Feb 20, 2007Paramount Leisure Industries, Inc.Anti-entrapment drain
US7407574 *Mar 1, 2006Aug 5, 2008Donnell RobinsonRooftop drainage device
US7419588 *Dec 4, 2006Sep 2, 2008Lawson Robert BSump grate for a swimming pool
US7475698 *Apr 22, 2005Jan 13, 2009Steelkor, L.L.C.Kitchenware washers and methods of manufacturing the same
US7527062Apr 22, 2005May 5, 2009Steelkor, L.L.C.Kitchenware washers and methods of manufacturing the same
US7578305Jul 28, 2005Aug 25, 2009Steelkor, L.L.C.Kitchenware washers and related methods
US7763119Apr 22, 2005Jul 27, 2010Steelkor, L.L.C.Kitchenware washers and methods of manufacturing the same
US7788743Mar 31, 2005Sep 7, 2010Mjelde Olaf WDrain cover
US8001627 *Jan 8, 2008Aug 23, 2011Johndro James JPortable main drain for a pool of water
US8272078Jul 16, 2008Sep 25, 2012Bonnie SnowApparatus and system for a suction entrapment and entanglement avoidance retrofit/new installation
US8650673Oct 25, 2007Feb 18, 2014Gsg Holdings, Inc.Swimming pool drain
US8713724Mar 7, 2011May 6, 2014Gsg Holdings, Inc.Pool drain assembly with annular inlet
US20120144578 *Oct 7, 2011Jun 14, 2012Lawson Robert BSafety grate cover for a swimming pool
US20140158593 *Nov 7, 2013Jun 12, 2014Yu-Chia ChienMovable filter grid for a drain inlet
WO2003040489A2 *Nov 5, 2002May 15, 2003Froeter Craig JBi-functional roof drain and method of retrofitting a roof drainage system therewith
Classifications
U.S. Classification210/163, 210/166, 4/289, 4/507
International ClassificationE04H4/12, E04H4/00
Cooperative ClassificationE04H4/1236
European ClassificationE04H4/12A2
Legal Events
DateCodeEventDescription
Jul 8, 1999ASAssignment
Owner name: JACUZZI INC., CALIFORNIA
Free format text: NUNC PRO TUNC ASSIGNMENT EFFECTIVE AS OF 6-30-98;ASSIGNOR:JACUZZI INC.( A FORMER DELAWARE CORPORATION);REEL/FRAME:010061/0874
Effective date: 19990225
Mar 30, 1999ASAssignment
Owner name: JACUZZI INC., A DELAWARE CORPORATION, CALIFORNIA
Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNOR:JACUZZI INC., A FORMER DELAWARE CORPORATION;REEL/FRAME:009866/0373
Effective date: 19880402
May 21, 1981ASAssignment
Owner name: JACUZZI INC., 11511 NEW BENTON HIGHWAY, LITTLE ROC
Free format text: NUNC PRO TUNC ASSIGNMENT;ASSIGNORS:JACUZZI WHIRLPOOL BATH, INC.;JACUZZI BROS., INC.;REEL/FRAME:003873/0510;SIGNING DATES FROM 19810424 TO 19810508