US3319577A - Sliding seal and valve for reciprocating pump plunger - Google Patents

Sliding seal and valve for reciprocating pump plunger Download PDF

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Publication number
US3319577A
US3319577A US435307A US43530765A US3319577A US 3319577 A US3319577 A US 3319577A US 435307 A US435307 A US 435307A US 43530765 A US43530765 A US 43530765A US 3319577 A US3319577 A US 3319577A
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US
United States
Prior art keywords
pump
piston
disc
annulus
barrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US435307A
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English (en)
Inventor
Herreshoff Lewis Francis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MARGRETE L STINNES
Original Assignee
MARGRETE L STINNES
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MARGRETE L STINNES filed Critical MARGRETE L STINNES
Priority to US435307A priority Critical patent/US3319577A/en
Priority to DEST25006A priority patent/DE1298882B/de
Priority to CH256766A priority patent/CH434980A/de
Priority to GB7562/66A priority patent/GB1142153A/en
Priority to NL666602278A priority patent/NL140037B/nl
Priority to DK96166*#A priority patent/DK133060C/da
Priority to AT171966A priority patent/AT264312B/de
Application granted granted Critical
Publication of US3319577A publication Critical patent/US3319577A/en
Priority to NL7314442.A priority patent/NL156486B/nl
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F04B53/121—Valves; Arrangement of valves arranged in or on pistons the valve being an annular ring surrounding the piston, e.g. an O-ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1002—Ball valves
    • F04B53/101—Ball valves having means for limiting the opening height
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14—Pumps characterised by muscle-power operation

Definitions

  • FIG. 2 SLIDING SEAL AND VALVE FOR RECIPROCATING PUMP PLUNGER Filed Feb. 25, 1965 INVENTOR L. FRANCIS HERRESHOFF FIG. 2
  • FIG. 1 A first figure.
  • the present invention relates to pumps and more particularly to reciprocating pumps such as hand-operated bilge pumps for boats.
  • the invention is concerned with improvements in the plunger or piston of such pumps.
  • the piston or plunger which is reciprocated within the pump barrel may employ a cup-shaped element of leather or other resilient material to provide the sliding seal between plunger and barrel.
  • this cup-shaped element may also serve as a valve, with the walls of the cup yielding inwardly on the downstroke to enable liquid to flow upwardly between the cup and the barrel.
  • the walls of the cup On the upstroke, the walls of the cup, under the weight of liquid above, move outwardly into contact with the barrel to provide a sliding seal.
  • the present invention has an object the provision of a pump plunger or piston of novel construction and configuration, wherein a combined sliding seal and check valve is employed in a manner that provides relatively large flow capacity and is substantially free from clogging by foreign matter.
  • the purnp piston of the invention employs a resilient seal in the form of an annular ring or torus slidably engaging the pump barrel and loosely mounted on the piston for limited axial movement between predetermined positions, in one of which the resilent ring provides a fluid seal between piston and pump barrel when the piston is moved in one direction and a relatively unobstructed flow of liquid through the piston when the latter is being moved in the other direction.
  • FIGURE 1 is a view in sectional elevation of a handoperated pump such as a bilge pump, showing the seal and valve structure of the invention in closed position.
  • FIGURE 2 is a view in sectional elevation of the lower portion of the pump shown in FIGURE 1, with the valve of the pump plunger in open position.
  • FIGURE 3 is a cross-sectional view, artly broken away and taken on the line 3-3 of FIGURE 2, showing details of the seal and valve structure, and
  • FIGURE 4 is a detail sectional view of an alternative embodiment of the combined seal and valve of my invention.
  • my invention is shown as embodied in a hand-operated reciprocating pump of a type suitable for removing water from the bilge of a boat.
  • the pump comprises a cylindrical barrel 12 having at its bottom end a centrally-open fitting 14 which serves as the pump inlet and also provides a seat for the check valve ball 16.
  • a rod 18 extends across the barrel as a retainer for the ball to limit upward movement thereof as shown in FIG. 1.
  • a bonnet 22 is provided with an outlet passage through sleeve 24, to which a suitable length of hose may be attached.
  • a pump rod or plunger 30 extends through the bonnet into the barrel, with resilient seal ring 32 to prevent leakage.
  • a resiiient seal ring 34 is also employed between the bonnet and the top end of the pump barrel 12.
  • a suitable andle 36 is secured to the upper end of the pump plunge 36.
  • a unitary pump piston and valve structure is provided that is distinguished by large, unobstructed flow passage on the downstroke of the pump, and effective sealing with low friction on the lifting stroke.
  • This combined piston and valve employs a seal ring 40, which may be a large O-ring or the like, which functions both as the sliding seal and as a check valve, opening on the downstroke and closing on the upstroke.
  • the combined sliding seal and check valve operation of the ring 40 is made possible through the utilization of a piston structure which is, in effect, a relatively open cage by which the ring 40 is loosely confined.
  • this cage-like structure secured to the lower end of the rod 39, employs a disc 42 of substantially smaller diameter than the pump barrel, so that an annular passage of substantial total area is available for fluid flow around the disc on the downstroke of the pump, as shown in FIG. 3.
  • the diameter of the disc may approximate the mean between the outer and the inner diameters of the seal ring 40.
  • the disc 42 will be no larger in size than is necessary to insure that the seal ring cannot slip downwardly past the disc during pum ing, nor become wedged in such a way as to create excessive sliding friction with the pump barrel.
  • the piston structure permits the resilient ring during the pump downstroke to move axially a substantial distance away from the disc and also permits relatively unobstructed flow through the open center of the ring.
  • the piston cage employs struts or arms 46 which extend axially from disc 42 and then diverge outwardly to join a narrow ring or annular stop member 48 having its periphery close to the pump barrel.
  • This ring 48 open at its center, provides a stop for the resilient seal on the downstroke, during which the seal is in inactive, open position.
  • the struts are of such length as to permit the seal to move away from the disc 42 far enough to provide a passage between disc and seal approximating the axial width of the seal ring.
  • the area of the passage between disc and seal may readily be made at least as large as the area of the annular passage between the edge of disc 42 and the pump barrel.
  • the seal ring 40 which also serves as the check valve element in the piston, may be a conventional O-ring of the proper outside diameter and crosssection to provide, of its own resiliency, an effective sealing engagement with the pump walls without undue friction.
  • the normally-circular shape of section of the ring may be modified slightly by providing oblique flattened regions 50 around the periphery, so as to leave a relatively narrow band of material in resilient contact with the barrel.
  • the operation of the pump resembles in general that of conventional hand-operated lift or bilge pumps.
  • the parts On the upward stroke, the parts are as shown in FIG. 1 with the seal ring in engagement with the disc 42 to provide a substantial fluid-tight sliding piston, the upward or suction stroke of which serves to draw water into the pump barrel past the open check valve at the bottom.
  • the ball 16 drops to close the check valve at the inlet and prevent the escape of water from the barrel.
  • the piston cage lowers freely through the seal ring which tends to remain stationary with respect to the pump barrel until engaged by the open-ended portion of the cage structure.
  • the seal ring Upon continued downward movement of the piston, the seal ring is carried along, as shown in FIG.
  • FIG. 4 An alternative embodiment of the invention is illustrated in FIG. 4, showing a form of piston which requires only a single member, the piston rod, to extend through the open center of the O-ring for minimum obstruction of the flow passage.
  • the disc 62 against which the seal ring 60 seats during pump upstroke, is secured to the reduced end of piston rod 30.
  • a narrow rim 68 extends around the outer ends of the struts to aid in centering the piston within the pump barrel and to engage and retain the seal ring on the piston during the downstroke, although it will be appreciated that a rim is not essential either to the centering of the piston or to the retention of the seal ring and may be omitted if desired.
  • a pump piston on said rod having combined sliding seal and check valve means comprising an annulus of resilient; material in peripheral sliding engagement with the interior of the pump barrel, a piston cage loosely confining said annulus for limited axial movement relative to said cage, the cage including an annular stop member and a disc against which the annulus seats on the suction stroke of the pump, the disc having a diameter approximating the mean diameter of the annulus, said piston cage including a small number of independent supporting arms each secured at one end to said annular stop member and at the other end to said disc and spaced from each other a distance substantially greater than the width of said arms and serving as sole support of said annular stop member in spaced relation to said disc for supporting said annulus during the reverse stroke of the pump and to provide a large space for free flow of fluid between said arms during said reversal stroke of the pump.
  • annular stop member has an inner diameter of opening at least equal to that of the inner diameter of said annulus, and wherein said arms support said annular stop member axially spaced from said disc a distance such that on the return stroke of the pump said annulus is spaced from said disc a distance approximating the spacing between the edge of said disc and the inner surface of said cylindrical barrel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
US435307A 1965-02-25 1965-02-25 Sliding seal and valve for reciprocating pump plunger Expired - Lifetime US3319577A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US435307A US3319577A (en) 1965-02-25 1965-02-25 Sliding seal and valve for reciprocating pump plunger
DEST25006A DE1298882B (de) 1965-02-25 1966-02-18 Fluessigkeitspumpe, insbesondere Lenzpumpe
GB7562/66A GB1142153A (en) 1965-02-25 1966-02-21 Sliding seal and valve for reciprocating pump plunger
CH256766A CH434980A (de) 1965-02-25 1966-02-21 Flüssigkeitspumpe
NL666602278A NL140037B (nl) 1965-02-25 1966-02-22 Vloeistofpomp.
DK96166*#A DK133060C (da) 1965-02-25 1966-02-24 Veskepumpe, iser lensepumpe
AT171966A AT264312B (de) 1965-02-25 1966-02-24 Flüssigkeitspumpe
NL7314442.A NL156486B (nl) 1965-02-25 1973-10-19 Vloeistofpomp met een zuiger, die is voorzien van een tussen twee aanslagen beweegbare elastische afdichtingsring.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US435307A US3319577A (en) 1965-02-25 1965-02-25 Sliding seal and valve for reciprocating pump plunger

Publications (1)

Publication Number Publication Date
US3319577A true US3319577A (en) 1967-05-16

Family

ID=23727860

Family Applications (1)

Application Number Title Priority Date Filing Date
US435307A Expired - Lifetime US3319577A (en) 1965-02-25 1965-02-25 Sliding seal and valve for reciprocating pump plunger

Country Status (7)

Country Link
US (1) US3319577A (nl)
AT (1) AT264312B (nl)
CH (1) CH434980A (nl)
DE (1) DE1298882B (nl)
DK (1) DK133060C (nl)
GB (1) GB1142153A (nl)
NL (2) NL140037B (nl)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625636A (en) * 1969-07-09 1971-12-07 Robert E Nelson Liquid level regulating system
US3752604A (en) * 1971-07-19 1973-08-14 Superior Manuf Co Pump valve assembly
US4889250A (en) * 1986-02-12 1989-12-26 E Street Enterprises, Inc. Vacuum pump and closure assembly for beverage container
US20040129735A1 (en) * 2002-03-01 2004-07-08 Lincoln Industrial Corporation Pump with pneumatic motor
US20090068038A1 (en) * 2007-09-10 2009-03-12 Ying-Che Huang Pump
US20090175747A1 (en) * 2008-01-09 2009-07-09 Leboeuf William E Manual evacuation system
US20140008310A1 (en) * 2012-06-25 2014-01-09 Grayl Inc. Filtration container assemblies and methods
US20160273558A1 (en) * 2009-11-16 2016-09-22 Lyle Bates Systems for energy recovery and related methods
US9796600B2 (en) 2013-12-23 2017-10-24 Bell Sports, Inc. Water container with floatable filter
US10118113B2 (en) 2013-12-23 2018-11-06 Bonvi Water, Inc. Water container with floatable filter system and method
US10368685B2 (en) 2008-05-12 2019-08-06 Espro Inc. Apparatus and method for extracting an infusion
US11015595B2 (en) * 2016-06-30 2021-05-25 Graco Minnesota Inc. Piston pump and seal ring
US11033841B1 (en) 2012-05-25 2021-06-15 Plenty Company, LLC Expandable water filter reservoir
US11511839B1 (en) * 2021-05-27 2022-11-29 I-Sin Peng Built-in water pumping device of manual paddle for boat
US11596882B2 (en) 2019-05-28 2023-03-07 Plenty Company, LLC Water pitcher with float and underside filter

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543227B1 (fr) * 1983-03-25 1991-07-12 Intevep Sa Piston a clapet de retenue simple
FR2543228B1 (fr) * 1983-03-25 1991-07-12 Intevep Sa Piston a clapet de retenue
DE8811811U1 (de) * 1988-09-17 1988-10-27 Ophardt Product Hermann Ophardt, 4174 Issum Kolbenpumpe zum Dosieren fließfähiger Substanzen
DE9407436U1 (de) * 1994-04-29 1994-07-14 Crull, Roland, 21365 Adendorf Flüssigkeitsheber
DE19916993C1 (de) * 1999-04-15 2000-02-10 Guenther Engineering Gmbh Kolben für Kältemittelverdichter

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL96466C (nl) *
US1363761A (en) * 1920-06-19 1920-12-28 Leon D Crapps Pump-valve
US1522287A (en) * 1923-09-29 1925-01-06 F M Thomson Pump piston or plunger
US2683060A (en) * 1953-04-24 1954-07-06 Sprayers & Nozzles Inc Sprayer and sprayer pump
GB742113A (en) * 1952-11-04 1955-12-21 Bluemel Brothers Ltd Improvements in or relating to inflators for cycle and other road vehicle tyres
US2940674A (en) * 1954-09-23 1960-06-14 Robert H Hunter Instant flame torch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1254024A (en) * 1917-01-22 1918-01-22 George M Godfrey Valved piston.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL96466C (nl) *
US1363761A (en) * 1920-06-19 1920-12-28 Leon D Crapps Pump-valve
US1522287A (en) * 1923-09-29 1925-01-06 F M Thomson Pump piston or plunger
GB742113A (en) * 1952-11-04 1955-12-21 Bluemel Brothers Ltd Improvements in or relating to inflators for cycle and other road vehicle tyres
US2683060A (en) * 1953-04-24 1954-07-06 Sprayers & Nozzles Inc Sprayer and sprayer pump
US2940674A (en) * 1954-09-23 1960-06-14 Robert H Hunter Instant flame torch

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625636A (en) * 1969-07-09 1971-12-07 Robert E Nelson Liquid level regulating system
US3752604A (en) * 1971-07-19 1973-08-14 Superior Manuf Co Pump valve assembly
US4889250A (en) * 1986-02-12 1989-12-26 E Street Enterprises, Inc. Vacuum pump and closure assembly for beverage container
GB2220231B (en) * 1988-06-30 1993-02-10 Street Enterprises Inc E Vacuum pump for beverage container
US20040129735A1 (en) * 2002-03-01 2004-07-08 Lincoln Industrial Corporation Pump with pneumatic motor
US6923348B2 (en) * 2002-03-01 2005-08-02 Lincoln Industrial Corporation Pump with pneumatic motor
US20090068038A1 (en) * 2007-09-10 2009-03-12 Ying-Che Huang Pump
US20090175747A1 (en) * 2008-01-09 2009-07-09 Leboeuf William E Manual evacuation system
US8192182B2 (en) * 2008-01-09 2012-06-05 S.C. Johnson Home Storage, Inc. Manual evacuation system
US10368685B2 (en) 2008-05-12 2019-08-06 Espro Inc. Apparatus and method for extracting an infusion
US20160273558A1 (en) * 2009-11-16 2016-09-22 Lyle Bates Systems for energy recovery and related methods
US9945400B2 (en) * 2009-11-16 2018-04-17 Paradigm Waterworks, LLC Systems for energy recovery and related methods
US11033841B1 (en) 2012-05-25 2021-06-15 Plenty Company, LLC Expandable water filter reservoir
US20140008311A1 (en) * 2012-06-25 2014-01-09 Grayl Inc. Filtration container assemblies and methods
US11944921B2 (en) 2012-06-25 2024-04-02 Grayl Inc. Filtration container assemblies and methods
US20140008310A1 (en) * 2012-06-25 2014-01-09 Grayl Inc. Filtration container assemblies and methods
US10710007B2 (en) * 2012-06-25 2020-07-14 Grayl Inc. Filtration container assemblies and methods
US11179657B2 (en) 2012-06-25 2021-11-23 Grayl Inc. Filtration container assemblies and methods
US9796600B2 (en) 2013-12-23 2017-10-24 Bell Sports, Inc. Water container with floatable filter
US10981093B2 (en) 2013-12-23 2021-04-20 Plenty Company, LLC Water container with floatable filter system and method
US10722828B2 (en) 2013-12-23 2020-07-28 Plenty Company, LLC Water container with floatable filter system and method
US10118113B2 (en) 2013-12-23 2018-11-06 Bonvi Water, Inc. Water container with floatable filter system and method
US11015595B2 (en) * 2016-06-30 2021-05-25 Graco Minnesota Inc. Piston pump and seal ring
US11596882B2 (en) 2019-05-28 2023-03-07 Plenty Company, LLC Water pitcher with float and underside filter
US11511839B1 (en) * 2021-05-27 2022-11-29 I-Sin Peng Built-in water pumping device of manual paddle for boat
US20220380011A1 (en) * 2021-05-27 2022-12-01 I-Sin Peng Built-in Water Pumping Device of Manual Paddle for Boat

Also Published As

Publication number Publication date
NL140037B (nl) 1973-10-15
DK133060B (da) 1976-03-15
NL7314442A (nl) 1973-12-27
DK133060C (da) 1976-08-16
NL6602278A (nl) 1966-08-26
AT264312B (de) 1968-08-26
CH434980A (de) 1967-04-30
GB1142153A (en) 1969-02-05
DE1298882B (de) 1969-07-03
NL156486B (nl) 1978-04-17

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