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Publication numberUS3633749 A
Publication typeGrant
Publication dateJan 11, 1972
Filing dateApr 21, 1970
Priority dateApr 21, 1970
Publication numberUS 3633749 A, US 3633749A, US-A-3633749, US3633749 A, US3633749A
InventorsRichard L Panosh
Original AssigneeRichard L Panosh
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Automatic swimming pool skimmer
US 3633749 A
Abstract
An upper cylinder and a lower cylinder attached to each other by means of a tapered rolled membrane, a tube connected to the lower cylinder for pumping out water, and a flotation collar secured to the upper cylinder for automatically pumping water which is skimmed from the surface of a swimming pool to a filter while adjusting to any variation in the swimming pool water level.
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Description  (OCR text may contain errors)

United States Patent Richard L. Panosh 717 Front Street, Lisle, Ill. 60532 30,466

Apr. 21, 1970 Jan. 11, 1972 Inventor Appl. No. Filed Patented AUTOMATIC SWIMMING POOL SKIMMER 2 Claims, 2 Drawing Figs.

U.S. Cl 210/121, 210/DlG. 21, 210/169 Int. Cl B01d 17/00 Field of Search 2 l O/DlG.

[56] References Cited UNITED STATES PATENTS 2,989,185 '6/1961 Lombardi 210/169 3,428,178 2/1969 Nash 210/242 Primary Examiner-Reuben Friedman Assistant Examiner-Charles N. Hart Attorney- Victor J. Evans and Co.

ABSTRACT: An upper cylinder and a lower cylinder attached to each other by means ofa tapered rolled membrane. a tube connected to the lower cylinder for pumping out water, and a flotation collar secured to the upper cylinder for automatically pumping water which is skimmed from the surface of a swimming pool to a filter while adjusting to any variation in the swimming pool water level.

PATENTED JAN: 1 1972 IN VEN TOR. 00/420 1 FAA 0M Arm/2,116 Y5.

AUTOMATIC SWIMMING POOL SKIMMER This invention relates to a simple but efficient device for skimming the surface of a body of water for such diverse purposes as cleaning a swimming pool, removing oil from a body of water, separation of different density fluids and chemicals, etc.

A primary object of this invention is a skimmer which automatically adjusts to any change in water level of the body of water being skimmed.

Another object of this invention is a skimmer which automatically adjusts to any change in rate that the skimmed water is pumped from the skimmer.

The above and other objects of the invention will become apparent to those skilled in the art after a consideration of the following detailed description of the preferred embodiment of this invention taken together with the accompanying drawings in which:

FIG. 1 is a cross-sectional view of the skimmer; and

FIG. 2 is a sectional view taken on line 2-2 of FIG. 1.

Referring in detail to the drawing, there is shown in FIGS. 1 and 2 an inner cylinder 20, a lower cylinder 22, and a rubber or vinyl membrane 24 connected between the opening 26 of cylinder 22 and bottom opening 28 of cylinder 20, membrane 24 being tapered to fit between the different sized openings 26 and 28 for a watertight fit. Cylinder 22 is connected by means of a web 29 to a pipe 30 which allows water to be pumped out of the skimmer and directed to a filter or other apparatus for further treatment and usage depending upon what is being skimmed. A flotation collar 32 is attached about the upper end of inner cylinder 20. Lower cylinder 22 is fixed rigidly in place due to pipe 30, and membrane 24 allows upper cylinder to move freely in and out of lower cylinder 22 in order to adjust for water level and pumping rate changes.

Due to its taper, membrane 24 rolls through itself without stretching during relative movement between cylinders 22 and 20. When the level 34 of the body of water 36 rises to level 34', flotation collar 32 forces inner cylinder 20 upward and tapered membrane 24 upward also. Flotation collar 32 does not lift cylinder 20 above level 34 or 34' due to water pressure against the top surface 36 of the membrane 24.

In addition to adjusting to the level of a body of water, the skimmer also adjusts to the pumping rate of the skimmed water which is directly proportional to the amount of water inside the skimmer. Thus, when the water within cylinders 22 and 20 is as high inside the skimmer as outside, differential pressure is zero on membrane 24 and the only force on inner cylinder 20 is provided by flotation collar 32 which lifts inner cylinder 20 above level 34 in order to cut off the flow of water into the skimmer and prevent the skimmed water from mixing with body 38. As the pumped capacity is increased, the head height of water in the skimmer falls and differential pressure on membrane 24 increases in the downward direction pulling inner cylinder 20 down and allowing water to be skimmed.

While the preferred embodiment of this invention has been illustrated and described, it will be understood by those skilled in the art that modifications and changes may be resorted to without departing from the spirit and scope of the invention.

I claim:

1. A fluid skimmer, comprising a pair of cylinders having difl'erent diameters, one of said cylinders having a closed bottom and an open top, the other of said cylinders having both ends open, a tapered membrane connected between the open end of one of said cylinders and the open bottom end of the other of said cylinders forming a watertight fit with said cylinders and allowing said cylinders to slidably overlap with each other, a collar attached to the outer surface of said other cylinder near the upper end thereof, and a pipe extending below the level of a body of fluid and connected at the bottom of said pipe to said one of said cylinders, said other of said cylinders being positioned to overlap with the top portion of said one of said cylinders, said one of said cylinders being held at a uniform depth above the ground level of the body of fluid without regard to variations in the surface level of the body of fluid, the u1d pressure forcing said membrane to roll in one direction thereby moving said other of said cylinders in the same direction relative to the stationary said one of said cylinders, and said collar forcing said other of said cylinders in a direction opposite that produced by fluid pressure for keeping the upper open end of said other of said cylinders just below the surface level of the fluid body, the counterbalancing forces of the collar and the fluid pressure on said membrane in conjunction with the slidablc connection between said cylinders allow said other of said cylinders to move up and down in the alternative in relation to said one of said cylinders for automatically adjusting the top opening of said other of said cylinders to a position just below the surface level of a body of fluid as it varies in depth, and said pipe allowing the skimmed fluid to be pumped out of said cylinders.

2. The device of claim 1, wherein said other of said cylinders has a smaller diameter than said one of said cylinders and said collar is a flotation element causing said other of said cylinders to rise above the surface level of the body of fluid when the level of the skimmed fluid within said cylinders is the same as the surface level of the fluid body for automatically preventing the mixing of the skimmed fluid with the fluid body obviating the need for surveillance of the device and automatically allowing the skimmed fluid to be pumped from said cylinders by means of said pipe to reduce the skimmed fluid level prior to the lowering of said other of said cylinders below the body fluid level.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2989185 *Jan 31, 1958Jun 20, 1961Oliver M LombardiSurface skimmer for swimming pools and method
US3428178 *Aug 30, 1967Feb 18, 1969Jacuzzi Bros IncSkimmer assembly and included weir assembly
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4126925 *Oct 17, 1975Nov 28, 1978Jacuzzi Bros. IncorporatedSkimmer assembly
US4212740 *Jun 2, 1978Jul 15, 1980Kdi American Products, Inc.Floating weir and strainer basket construction
US4220530 *May 29, 1979Sep 2, 1980Gabriele Raymond SFish tank filter
US4325150 *Sep 22, 1980Apr 20, 1982Buddy H EPool surface skimming apparatus
US4405458 *Apr 29, 1980Sep 20, 1983Mchugh Jr Leo AContinuous flow, variable capacity self-compensating floating weir
US4498984 *Jan 30, 1980Feb 12, 1985Colson Andrew ESecondary water chamber with pump and filter
US4765889 *Apr 6, 1987Aug 23, 1988Lakeside Equipment CorporationMoving bridge filter - telescoping floating pot skimmer
US5133854 *Jul 13, 1990Jul 28, 1992Tibor HorvathSkimmer with self-adjusting floating collector
US5135666 *May 23, 1991Aug 4, 1992Lucas James EMarine oil spill clean-up method using a motion compensator means
US5275721 *Feb 8, 1993Jan 4, 1994Oommen MathewsSwimming pool super-skimmer
US5384033 *Mar 8, 1994Jan 24, 1995Baker Hughes IncorporatedFloating inlet tube
US5413707 *Apr 25, 1994May 9, 1995Shatilov; Alexander Y.Aquarium surface sweep prefilter
US5527461 *Jun 2, 1994Jun 18, 1996Hill; Gordon A.Airlift oil scavenger
US5693218 *Aug 11, 1992Dec 2, 1997Kowa Kikai Sekkei Kogyo Kabushiki KaishaApparatus for discharge surface liquid
US6802804Mar 21, 2000Oct 12, 2004Alfa Laval AbMethod and a device for separation of a surface layer of a liquid body
US6905611Mar 9, 2001Jun 14, 2005Alfa Laval Corporate AbImmersion container in liquids; separation aperture; discharging conduit
US7118521 *Jan 23, 2003Oct 10, 2006Alfa Laval Corporate AbCentrifugal separator with conical pump inlet
US7384548 *Dec 7, 2004Jun 10, 2008Terrien Richard JManually controlled skimming of industrial oil contaminants
DE4319324B4 *Jun 11, 1993Oct 13, 2005Kowa Kikai Sekkei Kogyo K.K., FukuyamaVorrichtung zur Ableitung von Oberflächenflüssigkeit
WO2000059639A1 *Mar 21, 2000Oct 12, 2000Alfa Laval AbA method and a device for separation of a surface layer of a liquid body
Classifications
U.S. Classification210/121, 210/167.1, 210/923
International ClassificationE04H4/12
Cooperative ClassificationY10S210/923, E04H4/1263
European ClassificationE04H4/12A5