US3730651A - Pump and folding support arrangement therefor - Google Patents

Pump and folding support arrangement therefor Download PDF

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US3730651A
US3730651A US3730651DA US3730651A US 3730651 A US3730651 A US 3730651A US 3730651D A US3730651D A US 3730651DA US 3730651 A US3730651 A US 3730651A
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frame
piston
housing
members
additional frame
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L Ellis
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L Ellis
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10Valves; Arrangement of valves
    • F04B53/12Valves; Arrangement of valves arranged in or on pistons
    • F04B53/125Reciprocating valves
    • F04B53/126Ball valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14Pistons, piston-rods or piston-rod connections
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/14Pumps characterised by muscle-power operation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00Pumps
    • Y10S417/903Treadle operated

Abstract

A pump and support arrangement therefor includes a first generally triangular frame means for pivotally supporting a hollow pump housing at its lower end. The converging sides of the first frame means are provided with a pivotal connection adjacent their upper ends and an additional frame means of a generally conforming triangular configuration and somewhat larger is also connected to the same pivot at its upper end. This enables the first frame means and the additional frame means to be pivoted toward and away from each other, so that when they are pivoted toward each other, the first frame means is nested within the additional frame means. Lock means are provided so that when the frame means are spread apart, they may be retained in such spread apart relationship for supporting the pump during operation. The hollow housing of the pump includes a piston with an opening therein and valve means for accommodating flow through the piston in one direction, but preventing flow in another direction. A piston rod is connected to such valve means and extends out the upper end of the hollow housing and is provided with a support means pivotally connected thereto which is telescopically received within tubular means that are pivotally carried by the same pivotal support which pivotally supports the first and additional frame means. The piston rod support means and the tubular housing telescopically receiving it are provided with securing means for securing the piston rod support means in an extended position relative to the tubular means and also in a collapsed position relative to the tubular means when the first frame means and additional frame means are in nested relation. When the piston rod support means and the tubular means are secured in extended relation, the tubular means functions as a handle to aid in moving the piston up and down within the housing so as to move fluid received from an inlet in the housing through the piston and thereabove, and thereafter on an upstroke of the piston, the valve means closes and moves the trapped fluid through an outlet in the housing.

Description

Unite States Patent 91 Ellis PUMP AND FOLDING SUPPORT ARRANGEMENT THEREFOR Lonnie T. Ellis, Route 2, Box 33-A, Orange, Tex. 77630 22 Filed: Jan. 12,1972

21 Appl.No.: 173,105

[76] inventor:

[56] References Cited UNITED STATES PATENTS 1,363,898 12/1920 Mortier ..4l7/903 X 1,539,556 5/1925 Gal'ber ..4l7/554 X 4/1930 Langdon ..417/554 Primary ExaminerC. J. l-lusar Assistant Examiner-Leonard Smith Att0rneyJack W. Hayden [57] ABSTRACT 1 May 1, 1973 tional frame means to be pivoted toward and away from each other, so that when they are pivoted toward each other, the first frame means is nested within the additional frame means. Lock means are provided so that when the frame means are spread apart, they may be retained in such spread apart relationship for supporting the pump during operation.

The hollow housing of the pump includes a piston with an opening therein and valve means for accommodating flow through the piston in one direction, but preventing flow in another direction. A piston rod is connected to such valve means and extends out the upper end of the hollow housing and is provided with a support means pivotally connected thereto which is telescopically received within tubular means that are pivotally carried by the same pivotal support which pivotally supports the first and additional frame means.

The piston rod support means and the tubular housing telescopically receiving it are provided with securing means for securing the piston rod support means in an extended position relative to the tubular means and also in a collapsed position relative to the tubular means when the first frame means and additional frame means are in nested relation. When the piston rod support means and the tubular means are secured in extended relation, the tubular means functions as a handle to aid in moving the piston up and down within the housing so as to move fluid received from an inlet in the housing through the piston and thereabove, and thereafter on an upstroke of the piston, the valve means closes and moves the trapped fluid through an outlet in the housing.

6 Claims, 2 Drawing Figures Patented May 1, 193 3,730,651

DESCRIPTION OF THE PRIOR ART Those references with which applicant has knowledge of include: to McGee, U.S. Pat. No. 528,378; Bower, U.S. Pat. No. 72l,662; Schalt, U.S. Pat. No. 764,900; Laing, U.S. Pat. No. 2,865,295; Shafer et al., U.S. Pat. No. 2,961,003; Wickenberg et al., U.S. Pat. No. 3,485,180; and Plos, U.S. Pat. No. 3,536,424.

None of these references disclose a compact pump, the support frame of which can be folded when not in use and which also enables the frame arrangement to be unfolded in a relatively short time and positioned for operation of the pump to either pump fluid through the pump or to siphon liquids.

SUMMARY OF THE PRESENT INVENTION the first frame means and additional frame means when they are nested; and

FIG. 2 is a plan view illustrating the pump and support arrangement of the present invention when folded or nested and not in use.

DESCRIPTION OF THE PREFERRED EMBODINENT Attention is first directed to FIG. ll of the invention wherein a first frame means is illustrated by the number 3 and an additional framemeans is illustrated by the number 4. The frame means 3 and 4 are provided with a common pivot as represented at 5 adjacent their upper ends to enable the frame means 3 and 4 to be moved toward and away from each other, as will be described. Lock brace means represented generally at 6 has one end 6a pivotally connected to the additional frame means adjacent its lower ends as shown in FIG. 1 and is provided with a turned down portion 6b adjacent its opposite end for detachably engaging over the bolt head 60 for locking the first and additional frame members 3 and 4 in the spread apart position illustrated in FIG. 1 of the drawing.

The first frame means 3 is more clearly illustrated in FIG. 2 of the drawing and is shown as including the sloping legs forming the side of the frame, such legs being designated 3a and 3b which are connected together adjacent their lower ends by brace means 3c extending therebetween. The sides 3a and 3b converge or slope upwardly towards each other and are pivotally connected together at their upper ends by means of the nected at their upper ends anda brace extending I between said side members adjacent their lower ends for supporting a hollow housing at its lower end, the

hollow housing having an inlet and outlet. The pivotal connection at the upper frame ends also pivotally supports a tubular handle means connected with a piston rod support means which in turn is pivotally connected to a piston rod that reciprocates a piston connected thereto within the hollow housing. The piston includes an opening therein for accommodating flow of fluid through the piston, and valve means is associated with the piston for accommodating fluid flow therethrough in one direction but inhibiting flow in the opposite direction whereby fluid maybe pumped from the inlet of the housing through the piston and then discharged through the outlet of the housing.

Yet a further object of the present invention is to provide a pump and support arrangement therefor which enables the pump and the support arrangement to be folded when not in use to occupy a minimum of space, and which support arrangement may be positioned with a minimum of effort in a minimum amount of time'to properly support the pump for operation thereof.

Other objects and advantages of the present invention will become apparent from a consideration of the following description and drawing:

BRIEF DESCRIPTION OF THE DRAWING FIG. 11 is a side elevation illustrating the first and additional frame means spread apart and locked in such spread apart position with the pump positioned thereon for operation. The dotted line portion of FIG. 1 represents the relationship of the tubular member to pin 5a extending therethrough which forms a common pivot connection for the first frame means 3 and the additional frame means 4 as previously noted.

The additional frame means 4 also includes legs or sides 4a and 4b which are connected together adjacent their lower ends by the brace 40 extending therebetween, and the legs 4a and 4b slope upwardly and converge toward each other and are carried on the pin 5a for pivoting relative thereto.

It will be noted that the additional frame means 4 is constructed and arranged so that it is somewhat larger than the first frame means 3, and when the first frame means 3 and d are in collapsed relation so that the frames 3 and 4 are nested in the same plane, the frame means 4 will surround the frame means 3 as illustrated in FIG. 2 of the drawing. Both frames are generally of an A configuration as shown and may be formed 'of suitable material such as rods or tubular goods.

A hollow cylindrical housing 13 is pivotally supported at its lower end 13a by any suitable bracket means as represented at 13b on the brace 30 extending between the lower ends of the legs 3a and 3b of frame means 3. The hollow cylindrical housing 13 is provided with closed upper and lower ends 13' and 13'', respectively, as shown in the drawing. It is also provided with an inlet 13c and an outlet 13d. The upper end 13' is a threaded cap for engaging cylindrical housing 13. It Y piston means 14 for Piston means 14 are carried within the hollow cylindrical housing or cylinder 13 and include an annular metal plate 14a, a pliable seal element such as leather 14b, and a lower annular metal plate 140. The plates 14a and 140 are provided with an opening 14d and a hollow tubular member l4e may be secured in such opening by any suitable means such as by threads or welding. The hollow tubular member 14e is provided with threads whereby the nut 14g may be threadedly secured on Me to hold annular plates 14a, leather disc 14b, and annular plate 140 together to form the piston means 14. The hollow tubular member He provides an opening through the piston means 14 for flow of fluid as will be described. 1

Valve means 15 are carried by the piston 14 on the top thereof, such valve means including the housing or cage 15a which has suitable ports or openings therein (not shown) for the flow of fluid therethrough and which also provides an arrangement for retaining valve element 15b within the cage and for seating on the upper end of tubular member Me to close off flow through the piston. Extending downwardly from the outlet 13d is a small, say one/thirty-second to one/sixteenth inch in width slot 13g which forms a means for relieving trapped air from the portion 23 above piston means 14 as it is moved upwardly within the cylindrical housing 13. The outlet 13d is provided with a conduit 24 and a suitable check valve means 24 to accommodate flow outwardly of the housing 13, but preventing flow in an opposite direction.

The piston rod 17 is connected to the valve cage 15 and extends upwardly through the upper end 13 of the cylinder 13. A suitable packing gland arrangement 13h is provided for sealing around the piston rod 17 and to inhibit leakage of fluid from the cylindrical housing 13. The piston rod 17 is pivotally connected at its upper end to piston rod support means 17a, the piston rod support means being telescopically received within the tubular means 8 pivotally mounted by the bracket means 80 on the pin a adjacent the upper ends of the frame means 3 and 4. The piston rod support means includes an opening 17b and an opening 170 for aligning with the opening 8b in the tubular member 8 to lock the piston support means and the tubular means in position for operation of the pump, and to lock them when the frame means 3 and 4 are in collapsed position as illustrated in FIG. 1 of the drawing and as shown in plan view of FIG. 2. The frame means 6 is shown as including the spaced legs 60 and 6d which are pivotally connected at their lower ends by any suitable means as represented at 6a to the brace 4c extending between the legs 40 and 4b, and suitable brace means 6fextend between the legs 6d and 6e as shown in FIG. 2 for retaining them in alignment.

When the frame means 3 and 4 are spread apart as illustrated in FIG. 1 of the drawing, then the lock brace means 6 is lowered so that the ends 6b thereof engage with the retaining means 6c as previously described. When it is desired to operate the pump, the securing means referred to generally at 30 and comprising the chain 10 and the pin 9 secured thereto is released from engagement in the opening 17b in the piston rod support means 170 and the aligned opening 8b of the tubular means 8. Then additional frame means 4 is moved rearwardly relative to the first frame means 3 and the lock brace means 6 positioned as shown in FIG. 1 of the drawing. When the frame means 3 and 4 are spread apart, the support means 17a will withdraw from the tubular means 8 or is withdrawn manually so that the cylindrical housing 13 may be positioned as shown in FIG. 1 of the drawing. After the cylindrical housing 13 is thus positioned, the pin 9 may be engaged in the hole 8b and hole 17c for locking the tubular member and the piston rod support means 17a together. The tubular means 8 and piston rod support means 17a may then function as a handle for operating the piston rod 17 to reciprocate the piston means 14 within the hollow cylinder 13.

While it is believed that the operation of the invention is apparent from the foregoing description, it will be assumed that it is desired to pump water or other liquids. The handle 8 is moved so that the piston means 14 move downwardly within the cylindrical housing 13, and when this occurs, liquid supplied through the inlet will pass upwardly through the hollow tubular member 14c and through the piston means 14 and the cage 15 to the space 23 above the piston means 14 within the cylindrical housing 13.

Thereupon, when the piston means 14 is moved upwardly within the cylindrical housing 13 by the handle means 8, such liquid is forced upwardly, and any trapped air may escape through the minute slot 13g formed within the housing 13. Thereafter, the liquid is discharged through the outlet 13d and conduit 24 connected therewith. Continued movement of the piston means up and down within the cylindrical housing 13 pumps liquid therethrough. It will be noted that the pliable annular seal disc 14b, which may be formed of leather, is larger than the internal diameter of the cylindrlcal housing 13 to assure the flexible member 14 as the piston means 14 is reciprocated within the housing.

When the pump is not in use, the piston rod support means 17a may be disengaged from the tubular means 8 by disengaging the securing means 30 therebetween and lock brace means 6 between the frame means 3 and 4 may be released so that the frames 3 and 4 may be moved towards each other to lie in the same plane. As this occurs, the piston rod means 17a is telescoped within the tubular member 8 and frame means 4 and tubular member 8 will move the dotted line position illustrated in FIG. 1 of the drawing.

The present invention may also be employed to pump air and other fluids or liquids. Also, it can be employed as a siphon to initiate the flow of liquids from a container at a higher level. When employed as a siphon, a conduit 50 having valve means 51 therein and a quick connect-disconnect arrangement 52 for engaging with the end of conduit 13e. The apparatus, after conduit 50 has been connected to 13s, is operated as previously described until liquid flow is effected through conduit 50, whereupon valve 51 is closed and conduit 50 is disconnected from 13a to continue the discharge of liquid in a desired manner.

The foregoing disclosure and description of the invention are illustrative and explanatory thereof, and various changes in the size, shape, and materials as well as in the details of the illustrated construction may be made without departing from the spirit of the invention.

What is claimed is:

1. A pump and support arrangement therefor comprising:

a. a hollow housing closed at both ends and having an inlet and an outlet;

b. first frame means pivotally supporting the lower end of said hollow housing;

c. pivotal support means adjacent the upper end of said first frame means;

d. piston means carried within said housing, said piston means having an opening therein for fluid flow therethrough;

e. valve means carried by said piston means for accommodating flow through the piston opening in one direction and closing off flow in the other direction;

f. a piston rod connected to said valve means and extending out the upper closed end of said hollow housing;

g. piston rod support means pivotally connected to said piston rod;

h. additional frame means connected adjacent the upper end thereof to said pivotal support means for said first frame means, said first frame means and said additional frame means being of the same general configuration, but said additional frame means being somewhat larger so that when said first and additional frame means are moved to the same plane, said additional frame means surrounds said first frame means;

i. tubular means pivotally carried by said means that pivotally supports said first and additional frame means and telescopically receiving said piston rod support means;

j. lock brace means connected with one of said frame means adjacent its lower end and movable to engage with the other of said frame means adjacent its lower end when said first and additional frame means are spread apart to thereby secure said frame means in such spread relationship to provide a support arrangement for the hollow housing; and

. means for securing said tubular means and said piston rod support means together whereby said tubular means may be reciprocated for moving said piston up and down in said housing to thereby move fluid from the housing inlet and through the piston opening on the downstroke and for moving fluid out the housing outlet on the piston upstroke.

2. The invention of claim 1 wherein said first frame means includes side members connected adjacent their lower ends by a brace therebetween, said side members sloping upwardly toward each other, there being a brace extending between and connected adjacent their upper ends, and wherein said pivot support means for the upper end includes a pin extending through said side members to accommodate pivoting of said side members.

3. The invention of claim 2 wherein said additional frame means includes side members connected adjacent their lower ends by a brace therebetween, said side members of said additional frame means sloping upwardly at substantially the same angle as said side members of said first frame means, but being longer than said side members of said first frame means and spaced further apart so that said additional frame means surrounds said first frame means when the are in a common plane, and wherein the upper ends ot said side members of said additional frame means are pivotally connected with said pin adjacent their upper ends which also pivotally supports the upper end of said side members of said first frame means.

4. The invention of claim 3 wherein said lock brace means includes spaced brace means pivotally connected with said brace extending between said side members of said additional frame means and including means for engaging with said brace extending between said side members of said first frame means for locking said first frame means and said additional frame means in spaced relation.

5. The invention of claim 1 wherein said valve means includes cage means mounted .on said piston and a valve member carried within said cage for closing off the piston opening on the upstroke ofthe piston.

6. The invention of claim 1 including opening means for discharging trapped air from said hollow housing on I the upstroke of said piston.

Claims (6)

1. A pump and support arrangement therefor comprising: a. a hollow housing closed at both ends and having an inlet and an outlet; b. first frame means pivotally supporting the lower end of said hollow housing; c. pivotal support means adjacent the upper end of said first frame means; d. piston means carried within said housing, said piston means having an opening therein for fluid flow therethrough; e. valve means carried by said piston means for accommodating flow through the piston opening in one direction and closing off flow in the other direction; f. a piston rod connected to said valve means and extending out the upper closed end of said hollow housing; g. piston rod support means pivotally connected to said piston rod; h. additional frame means connected adjacent the upper end thereof to said pivotal support means for said first frame means, said first frame means and said additional frame means being of the same general configuration, but said additional frame means being somewhat larger so that when said first and additional frame means are moved to the same plane, said additional frame means surrounds said first frame means; i. tubular means pivotally carried by said means that pivotally supports said first and additional frame means and telescopically receiving said piston rod support means; j. lock brace means connected with one of said frame means adjacent its lower end and movable to engage with the other of said frame means adjacent its lower end when said first and additional frame means are spread apart to thereby secure said frame means in such spread relationship to provide a support arrangement for the hollow housing; and k. means for securing said tubular means and said piston rod support means together whereby said tubular means may be reciprocated for moving said piston up and down in said housing to thereby move fluid from the housing inlet and through the piston opening on the downstroke and for moving fluid out the housing outlet on the piston upstroke.
2. The invention of claim 1 wherein said first frame means includes side members connected adjacent their lower ends by a brace therebetween, said side members sloping upwardly toward each other, there being a brace extending between and connected adjacent their upper ends, and wherein said pivot support means for the upper end includes a pin extending through said side members to accommodate pivoting of said side members.
3. The invention of claim 2 wherein said additional frame means includes side members connected adjacent their lower ends by a brace therebetween, said side members of said additional frame means sloping upwardly at substantially the same angle as said side members of said first frame means, but being longer than said side members of said first frame means and spaced further apart so that said additional frame means surrounds said first frame means when they are in a common plane, and wherein the upper ends of said side members of said additional frame means are pivotally connected with said pin adjacent their upper ends which also pivotally supports the upper end of said side members of said first frame means.
4. The invention of claim 3 wherein said lock brace means includes spaced brace means pivotally connected with said brace extending between said side members of said additional frame means and including means for engaging with said brace extending between said side members of said first frame means for locking said first frame means and said additional frame means in spaced relation.
5. The invention of claim 1 wherein said valve means includes cage means mounted on said piston and a valve member carried within said cage for closing off the piston opening on the upstroke of the piston.
6. The invention of claim 1 including opening means for discharging trapped air from said hollow housing on the upstroke of said piston.
US3730651D 1972-01-12 1972-01-12 Pump and folding support arrangement therefor Expired - Lifetime US3730651A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966364A (en) * 1974-12-24 1976-06-29 Oxy Metal Industries (Intra) Inc. Piston pump
US5366642A (en) * 1991-04-09 1994-11-22 Kpa, Incorporated Compact water filtration and purification pump
US5431816A (en) * 1991-04-09 1995-07-11 Sweetwater, Inc. Prefilter for a water purification pump
US5433848A (en) * 1991-04-09 1995-07-18 Kpa, Inc. Water filtration pump with disposable filter cartridges
US5534145A (en) * 1991-04-09 1996-07-09 Sweetwater, Inc. Compact water filtration pump
FR2814507A1 (en) * 2000-09-22 2002-03-29 Plastimo France Membrane pump with detachable bowl comprises inlet and return orifices fitted with valves and suction/return membrane activated by pivoted lever
FR2814506A1 (en) * 2000-09-22 2002-03-29 Plastimo France Membrane pump with retractable lever which comprises two parts able to move relative to each other between retracted and deployed positions
US20040166005A1 (en) * 2001-05-31 2004-08-26 Hyde Robert Brandon Micro irrigation pump
US20080260550A1 (en) * 2003-11-14 2008-10-23 Kickstart International Deep Well Irrigation Pump
US8770954B2 (en) 2010-02-10 2014-07-08 KickSmart International, Inc. Human-powered irrigation pump
US20140271241A1 (en) * 2013-03-13 2014-09-18 Brooklyn Bridge To Cambodia, Inc. Single-cylinder treadle pump

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363898A (en) * 1920-02-16 1920-12-28 Mortier Georges Albert Air-pump
US1539556A (en) * 1922-07-13 1925-05-26 Deming Co Pump
US1749038A (en) * 1928-03-24 1930-03-04 Jesse D Langdon Pump unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363898A (en) * 1920-02-16 1920-12-28 Mortier Georges Albert Air-pump
US1539556A (en) * 1922-07-13 1925-05-26 Deming Co Pump
US1749038A (en) * 1928-03-24 1930-03-04 Jesse D Langdon Pump unit

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3966364A (en) * 1974-12-24 1976-06-29 Oxy Metal Industries (Intra) Inc. Piston pump
US5431816A (en) * 1991-04-09 1995-07-11 Sweetwater, Inc. Prefilter for a water purification pump
US5433848A (en) * 1991-04-09 1995-07-18 Kpa, Inc. Water filtration pump with disposable filter cartridges
US5534145A (en) * 1991-04-09 1996-07-09 Sweetwater, Inc. Compact water filtration pump
US5366642A (en) * 1991-04-09 1994-11-22 Kpa, Incorporated Compact water filtration and purification pump
FR2814506A1 (en) * 2000-09-22 2002-03-29 Plastimo France Membrane pump with retractable lever which comprises two parts able to move relative to each other between retracted and deployed positions
FR2814507A1 (en) * 2000-09-22 2002-03-29 Plastimo France Membrane pump with detachable bowl comprises inlet and return orifices fitted with valves and suction/return membrane activated by pivoted lever
US7396218B2 (en) * 2001-05-31 2008-07-08 Kickstart International, Inc. Micro irrigation pump
US20040166005A1 (en) * 2001-05-31 2004-08-26 Hyde Robert Brandon Micro irrigation pump
US20080260550A1 (en) * 2003-11-14 2008-10-23 Kickstart International Deep Well Irrigation Pump
US8770954B2 (en) 2010-02-10 2014-07-08 KickSmart International, Inc. Human-powered irrigation pump
US10100818B2 (en) 2010-02-10 2018-10-16 Kickstart International, Inc. Human powered irrigation pump
US20140271241A1 (en) * 2013-03-13 2014-09-18 Brooklyn Bridge To Cambodia, Inc. Single-cylinder treadle pump
US9334861B2 (en) * 2013-03-13 2016-05-10 Brooklyn Bridge To Cambodia, Inc. Single cylinder treadle pump

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