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Publication numberUS2300952 A
Publication typeGrant
Publication dateNov 3, 1942
Filing dateApr 20, 1939
Priority dateApr 20, 1939
Publication numberUS 2300952 A, US 2300952A, US-A-2300952, US2300952 A, US2300952A
InventorsMay Richard T
Original AssigneeMay Richard T
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pump foot valve screen
US 2300952 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Nov. 3, 1 942. R. MAY 2,300,952

PUMP FooT VALVE SCREEN Filed April 20, 1959 www 11m@ IYNVENTOR ATTORNEYS Patented Nov. 3, 1942 UNITED STATES PATENT OFFICE PUMP FOOT VALVE SCREEN Richard T. May, Duthie, Idaho- Application April 20, 1939, iSerial No. 2693015 1 Claim.

This invention relates to pump foot valve screens and has for an object to provide a sscreen mounted in a pan to keep sand and small rocks from being drawn into the pump and causing undue wear and damage to the pump.

A further object is to provide a device of this character which will be formed of a few simple strong and durable parts, which will be inexpensive to manufacture, and which will not easily get out of order.

With the above and other objects in view the invention consists of y certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modications may be resorted to within the scope of the appended claim without departing from the spirit or sacricing any of the advantages of the invention.

In the accompanying drawing forming part of this specification:

Figure 1 is a' longitudinal sectional view of the device in applied position.

Figure 2 is a top plan view of the device.

Figure 3 is a longitudinal sectional view of a modified form of the device.

Referring now to the drawing in which like characters of reference designate similar parts in the various views, IG designates a cup fully open at the top and having inclined side walls. A cylindrical screen I I, smaller diametrically than the smallest corresponding dimension of the cup I0, is located centrally within the cup. The bottorri of the screen I I is closed by the imperforate bottom wall I2 of the cup I.

The screen is provided with an annular imperforate top wall I3, adapted to be secured to the lower end of a standard valve foot I4. The top wall I3 is secured to the foot I4 by bolts I5 passing through apertures I6 extending through the top wall I3 of the screen II. Radially disposed narrow strap braces I'I are secured to the upper edge of the side wall of the cup I!! and to the top wall I3 of the screen. A flap valve I8 is disposed in the foot I4 and attached to the foot by threads is a suction pipe I9.

In the modified form of the invention shown in Figure 3, 2B designates a cup fully open at the top and having vertical side walls. A cylindrical cup 20. An annular imperforate top wall 23 forms a top for the screen, and extends outside of the screen to form a securing flange adapted to be secured to a base flange on the lower end of screen 2 I, smaller diametrically than the smallest corresponding dimension of the cup, is disposed in the cup. The lower side of the screen 2I is closed by the imperforate bottom wall 22 of the the standard foot or pipe I4 by bolts or rivets passed through a base ange on the pipe and apertures 24 in said securing flange, of the screen. Radially disposed narrow strap braces 25 are secured to the upper edge of the side wall of the cup 20, and to the top wall 23 of the screen.

When the pump is in operation water is drawn downwardly into the cup as indicated by the arrows in Figure l, and through the cylindrical screen in the center of the cup. It is then drawn upwardly past the flap valve I8 in the suction pipe I9. As the water passes into the cup and through the said screen, small rocks and debris lodge against the screen and are prevented from being drawn into the pump to cause undue wear and damage to the pump. The inclined side wall of the cup permits the foreign matter being easily dumped when the cup is full. This easy dumping is accelerated by the long arcuate spaces between the radially disposed strap braces I1.

From the above description it is thought that the construction and operation of the invention will be fully understood without further explanation.

What is claimed is:

A strainer comprising a cup fully open at the top and having an imperforate side wall and an imperiorate bottom wall, a cylindrical screen of substantially the same height as the cup and smaller diametrically than the smallest corresponding dimension of the cup disposed centrally within and coaxial with the cup, the imperforate bottom wall of the cup closing the bottom oi the screen, an annular imperforate top wall for the screen extending laterally outside of the screen to form a securing flange, a pipe disposed coaxial with the screen and with the cup having a base ange bolted to said securing flange, and radially disposed narrow strap braces secured to the upper edge of the side wall of the cup and to the periphery of the said annular top wall of the screen providing long arcuate spaces between the braces to promote unobstructed access of the liquid and gravel into the cup and to promote easy dumping of trapped gravel from the cup.

RICHARD T. MAY,

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2503455 *Mar 22, 1946Apr 11, 1950Sheren Glenn WFire hose end strainer
US2767845 *Jun 14, 1954Oct 23, 1956Tractomotive CorpLiquid cleaner
US2783893 *Oct 12, 1953Mar 5, 1957Harold RomanoffAquarium drain attachment
US3288290 *Apr 14, 1965Nov 29, 1966Rosaen Filter CoFilter device
US3613894 *Jan 13, 1970Oct 19, 1971Clegg Kenneth K JrSubmerged suction strainer for a water hose
US4357238 *Feb 24, 1981Nov 2, 1982Ziaylek Theodore JunSubmerged inlet head for fire hoses and the like
US5435464 *May 17, 1994Jul 25, 1995Mobil Oil CorporationSystem for the prevention of the jamming of pumps
US5525222 *Jul 31, 1995Jun 11, 1996Zebra Mussel Filter Systems, Inc.Water filtration system for control of the zebra mussel
US5573677 *Jun 30, 1994Nov 12, 1996Dembrosky; EdwardWashing machine rinse water recovery apparatus and method
US5723044 *Jan 7, 1997Mar 3, 1998Zebra Mussel Filter Systems, Inc.Water filtration system for control of the zebra mussel
US7575677 *May 22, 2007Aug 18, 2009William Roy BarnesEnvironmentally friendly water extraction device
US8297448 *Nov 22, 2010Oct 30, 2012Johnson Screens, Inc.Screen intake device for shallow water
US9416920 *Mar 8, 2013Aug 16, 2016Edgar VeinbergsAdjustable liquid strainer
US20080061010 *Apr 16, 2007Mar 13, 2008Darren Christopher TomFilter System for Ponds and Larger Aquariums
US20140083516 *Mar 8, 2013Mar 27, 2014Edgar VeinbergsAdjustable liquid strainer
DE4225574A1 *Aug 3, 1992Feb 17, 1994Stefan FeyWithdrawal of liquid e.g. wine from above floor of a tank - open end of suction pipe is covered by mushroom-shaped element and annular gap exists between this element and end of pipe.
Classifications
U.S. Classification210/456, 210/463
International ClassificationF04B53/10
Cooperative ClassificationF04B53/1037
European ClassificationF04B53/10F