Title of Invention

MULTI -CYLINDER RECIPROCATING PUMP

Abstract

MULTI CYLINDER RECIPROCATING PUMP A portable multi cyclinder reciprocating single acting water pump offering high efficiency through advanced design,ease of reparability,and enhanced versatility is presented using the state of art technology.This multi-cyclinder pump with radial configuration also facilitates easy disassembly to allow a user to service the pump in the field and to replace worn or failing components easily.The pump housing and assembly are selected to provide efficient and ergonomic pumping action on both Upstroke and down movement.

Full Text

FORM 2 THE PATENTS ACT, 1970 COMPLETE SPECIFICATION (SECTION 10) Multi-cylinder Reciprocating pump Shakun Das, Near Gayatri Mandir, Vikas Khand, Baram Kela, Taluk: Sarangarh, Raigarh, Chattisgarh, MP, India The following specification particularly describes the nature of this invention and the manner in which it is to be performed 68-MUM-2003 24-05-04 1 9 MAY 2004 The invention relates a multi-cylinder reciprocating pump to discharge liquids such as water. The device is useful for pumping water from rivers, ponds, wells and the like water sources, thus enabling the farmers for pumping water for example for irrigation purposes. Reciprocating pumps are commonly employed to remove or pump, collected liquid, such as water, from a given source such as a deep well. For example, a user may easily pump out water from the bottom of a well. For landscaping, irrigation installation, and construction applications, a portable multi-cylinder reciprocating water pump may be conveniently used to suck water efficiently from the source. These and a wide variety of other applications may be easily accomplished with the use of a portable reciprocating pump to avoid employing other less convenient approaches. One of the conventional reciprocating pumps known in the art comprises a piston cylinder assembly adapted to be operated manually or by motive means. These pumps are commonly used to lift water from the bore wells, wells, ponds, rivers etc. Another known pump comprises a plurality of piston and cylinder assemblies such that the piston of each assembly is adapted to be operated by means of a cam so as to provide to and fro motion to the piston. In this pump when one pump assembly sucks the water the other assembly supply the water towards the outlet. This process continues due to the to and fro motion of the pistons and continues water/liquid supply is received at the outlet end. Further other reciprocating water pumps have been developed and are commercially available. While prior art of reciprocating pumps of the type are widely used, many of the existing reciprocating pumps are designed, manufactured and sold as disposable units with pumping components, which are permanently sealed together. Since, reciprocating pumps are generally known to be susceptible to mechanical failures, especially when pumping liquids containing mud, sand and other particulate. Because the prior art pump units arer4made up of components that are not easily accessible or replaceable, it is very difficult or impossible for a user to repair a component when repairs become necessary. Accordingly, the user is generally expected to replace the entire pump when failure -2- occurs. This can be particularly bothersome to a user who would rather replace or repair an inexpensive component and be back in business within a few minutes with a serviceable pump, instead of having to leave the job site and make a trip to a store to purchase an entirely new pump at an added cost. In addition, many of the prior art reciprocating pumps are designed to pump liquids out during the exhaust or outlet port primarily during the upstroke of the plunger mechanism, and very little on the down-stroke. Accordingly, the prior art reciprocating pumps are not believed to provide for optimum pumping capacity in each direction. Such prior pumping approaches tend to ignore the ergonomics of reciprocal movement, and the amount of physical strength required by the user in each direction, especially for larger pumps where greater manual force is necessary to pump larger volumes of liquids. A disadvantage associated with the prior art is that a lot of energy is required to lift small amount of water and in a discontinuous manner. It is therefore one object of the present invention to provide for a multi-cylinder reciprocating water pump that is manufactured and assembled with inexpensive components that are easily connected together in a manner that enables a user to easily disassemble and repair the pump with a few simple hand tools when necessary. Another object of the present invention is to provide a versatile pump kit that has a pre¬selected group of interchangeable spares and accessories to choose from, which group easily enables a user to employ the pump under a variety of conditions, and for a variety of purposes or uses. Yet another object of the present invention is to provide for a pump that is capable of efficiently and ergonomically pumping liquid during both the upstroke movement and down-stroke movement of the plunger mechanism each cylinder. -3- Still another object of the present invention is to provide for a sturdy liquid reciprocating pump that addresses the above-specified needs and yet is inexpensive, easy to use, to understand, and to repair to render the pump virtually good as new. The main advantage of this multi-cylinder pump is that it can deliver liquid more uniformly than that of a single cylinder pump. By using a suitable disposition of the discharge from the individual cylinder the total discharge of the multi-cylinder pump can be made to nearly equal to the mean discharge with negligible fluctuation without the use of an air vessel. One advantage of the present invention is that no chemical glue or solvent is required as part of constructing this pump, even though it is made primarily from automobile accessories, spares of agricultural and automobile implements. This pump can be operated manually as well as with an electrical motor. A further object of present invention is to provide a multi-cylinder reciprocating pump which can be used to lifting water from all kind of water sources like river, wells, bore wells, and ponds etc. Yet another object of the present invention is to provide a multi-cylinder reciprocating pump which can be transported easily from one place to another place. The following description contains many specifics; these should not be construed as limitations on the scope of the invention, but rather as an exemplification of one preferred embodiment thereof. Many other variations are possible accordingly the scope of the invention should not be limited to the embodiment illustrated, and the alterations and variations may be treated within the spirit and scope of this invention. Another advantage of the pumps of the present invention is that each component is replaceable if it should break, typically with low- cost replacement parts that are readily available in most hardware or plumbing supply stores. There are specific parts, which are expected to wear out with long, extensive use or rough use. Still another advantage of multi-cylinder reciprocating pump of the present invention is that they provide an ergonomic pumping action, characterized by equal pumping action or volume in both the _4_ upstroke direction and the down-stroke direction. multi-cylinder reciprocating pump comprising a plurality of valve-piston and cylinder assembly adapted to be secured with the outer periphery of the circular frame/chassis each valve- piston and cylinder assembly consists of a piston disposed into a cylinder having an inlet valve and outlet valve provided at the inlet end of said cylinder to suck and discharge the water on to and fro movement of the pistons in the respective cylinders of the cylinder assembly, the piston of said assemblies are adapted to be connected with bush assembly pivotedly by means of U clamp, said bush assembly is mounted on a crank shaft pivotedly and is adapted to be rotated by means of an electric motor through a flywheel pulley secured to said crank-shaft, the inlet end of said valve-piston cylinder assembly are connected to common inlet junction provided with plurality of connecting pipes, the outlet end of said valve- piston cylinder assembly are connected to common outlet junctions provided with plurality of connecting pipes, the arrangement being such that on rotation of said crank -shaft, the bush assembly starts rotating in circle to provide to and fro movement to the pistons for sucking and discharge of liquid/water to provide continuous supply of water through said inlet and outlet junctions. In accordance with this invention a multi cylinder reciprocating pump to obtain a continuous water supply has a plurality of valve-piston and cylinder assembly. The pistons of these assemblies are adapted to be reciprocated by means of a bush and clamp assembly. The bush assembly mounted on a crank shaft constitutes a crank assembly. The crank assembly is rotated by the motive means through a flywheel. The inlet ends of each of the valve-piston and cylinder assembly is connected to common inlet means having plurality of connecting pipes (preferably four pipes) provided therewith through respective conveying pipes. Similarly, the outlet ends of each of the valve piston and" cylinder assembly is connected to a common outlet provided with plurality of connecting pipes (preferably four pipes) through the respective conveying pipes. One way valve is provided at inlet and outlet end of the each valve-piston and cylinder assembly such that when one valve is opened the other valve is closed so as to facilitate the suction and discharge of the water by the movement of piston of the valve piston and cylinder assembly. The valve piston and cylinder assemblies are operated by rotating the flywheel/pulley as mentioned here and above. A circular frame/chassis is provided for supporting the valve-piston and cylinder assemblies having the conveying pipes connector therewith. The circular frame/chassis along with the valve-piston cylinder assemblies, conveying pipes, fly wheel etc. is mounted on a base frame supported on plurality of wheels. -5- The multi cylinder reciprocating pump according to a preferred embodiment of this invention is herein described and illustrated in the accompanying drawings wherein: Figs. 1 shows the isometric view of the pump. Fig. 2 shows the isometric view of the valve piston and cylinder assembly. Fig. 3 shows the isometric view of the crank assembly. Fig. 4 shows the isometric view of the flywheel/pulley. Fig. 5 shows the isometric view of the circular frame/chassis. Fig. 6 shows the isometric view of the trolley/base frame Fig. 7 shows the isometric view of valve piston and cylinder assembly. Fig. 8 shows the sectional view of crank assembly. Referring to the drawings particularly figure 1, the multi-cylinder reciprocating pump according to a preferred embodiment of this invention has a plurality of valve-piston and cylinder assembly (1) (preferably four), adapted to be secured with the outer periphery of the circular frame/chassis (2). Each of the valve, piston and cylinder assembly (1) comprises a piston (3) (see fig 2 & 7) disposed into a cylinder (4) having an inlet valve (5) and an outlet valve (6) provided at the inlet end of cylinder (4) such that to suck and discharge the water upon to and fro movement of the piston in the respective cylinders (4). The pistons (3) of these assemblies are adapted to be connected with the bush assembly (7) (see fig 3& 8) pivotally by means of U clamps (8) (not shown). The bush assembly (7) having a plurality of bushes (7a) are secured with a circular disc (7b) in the opposite direction to each other. The bush assembly (7) is mounted on a crank shaft (9) pivotally. The crank shaft (9) is adapted to be rotated by means of a motor source through a flywheel/pulley (10) (see fig 4) secured to the crank shaft (9). The crank shaft (9) is supported on the horizontal supports (not shown) provided with the circular frame/chassis (2) rotatably by means of bushes and /or bearings. The inlet ends (5) of each of the valve-piston cylinder assembly (1) are connected to common inlet junction (11) having plurality of connecting pipes (12) (preferably Four pipes) provided therewith for connecting respective conveying pipes (13) there between. Similarly, the outlet ends (6) of each of the valve, piston and cylinder assembly are connected to a common outlet junction (14) provided with plurality of connecting pipes (15) preferably four pipes) for connecting respective conveying pipes (16 mere between. One way valve (5 & 6) are provided at inlet and outlet end of the each valve-piston and cylinder assembly (1) such that when one valve is opened the other valve is closed so as to facilitate the suction and discharge of the water by the to and fro movement of piston in the cylinder assembly. The valve-piston and cylinder assembly (1) are operated by rotating the flywheel/pulley (10) as mentioned here and above. A circular frame/chassis (2) is provided for supporting the valve, piston and cylinder assemblies (1) having the conveying pipes (13 & 15) connected therewith. The circular frame/chassis (2) along with the valve-piston and cylinder assembly (1), conveying pipes (13 & 15), fly wheel/pulley (10) etc. is mounted on a base frame (17) supported on plurality of wheels (18). A motor means for example an electric motor is secured with the mounting platform provided with chassis (2) of the pump During the operation of the machine the flywheel/pulley is rotated with the help of the motor means and the crank assembly starts rotating along with the pulley/flywheel. Upon rotation of the crank shaft the bush assembly starts assembly rotating in circle and also in its own axis simultaneously and thus provides to and fro movement to the pistons and the suction and discharge of the liquid/water take place in order to provide the continuous supply of water through inlet and outlet junctions respectively. During the suction stroke the inlet valve is open and outlet valve is closed, thus the water is sucked in through the inlet junction by the piston cylinder assembly. During the discharge stroke the outlet valve is open and inlet valve is closed, thus the water is discharged through the outlet junction by the piston cylinder assembly. We Claim: 1. A multi-cylinder reciprocating pump comprising: - a plurality of valve-piston and cylinder assembly adapted to be secured with the outer periphery of the circular frame/chassis - each valve- piston and cylinder assembly consists of a piston disposed into a cylinder having an inlet valve ahd outlet valve provided at the inlet end of said cylinder to suck and discharge the water on to and fro movement of the pistons in the respective cylinders of the cylinder assembly, - the piston of said assemblies are adapted to be connected with bush assembly pivotedly by means of U clamp, - said bush assembly is mounted on a crank shaft pivotedly and is adapted to be rotated by means of an electric motor through a flywheel pulley secured to said crank-shaft, - the inlet end of said valve-piston cylinder assembly are connected to common inlet junction provided with plurality of connecting pipes," - the outlet end of said valve- piston cylinder assembly are connected to common outlet junctions provided with plurality of connecting pipes, - the arrangement being such that on rotation of said crank -shaft, the bush assembly starts rotating in circle to provide to and fro movement to the pistons for sucking and discharge of liquid/water to provide continuous supply of water through said inlet and outlet junctions. 2. A multi cylinder reciprocating pump as claimed in claim-1 wherein said valve piston and cylinder assembly has a piston disposed into a cylinder, an inlet and outlet valve is provided at the bottom end of the said cylinder for suction and discharging of water upon to and fro movement of the said piston. 3. A multi cylinder-reciprocating pump as claimed in claim 1 wherein said piston of each piston cylinder assembly is connected to a bush assembly with the help of a clamp. 4. A multi cylinder-reciprocating pump as claimed in claim 1 wherein said bush comprises assembly comprises a plurality of bushes secured with a circular disc in the opposite direction to each other, said circular disc is adapted to be mounted on a central portion of the said crank shaft pivotally. 5. A multi cylinder-reciprocating pump as claimed in claim 1 wherein Said cranks shaft is provided on said horizontal supports by means of bushes and/or bearings. 6. A multi cylinder reciprocating pump as claimed in claim 1 wherein said inlet and outlet valves are provided with the bottom end of the cylinder such that during the suction stroke, the inlet valve is opened and the outlet valve is closed and vise-versa 7. A multi cylinder reciprocating pump as claimed in claim 1 wherein said inlet and outlet junctions has a an inlet/outlet pipe provided on one side and four connecting pipes on the other side for connecting the inlet/outlet valves of said piston and cylinder assembly. 8. A multi cylinder reciprocating pump substantially as herein described and illustrated in the accompanying drawings. Dated this 15th day of January, 2003 SHANTI KUMAR Of Anand And Anand, Advocates Applicant"s Agent

Documents:

68-mum-2003-abstract(24-01-2005).doc

68-mum-2003-abstract(24-01-2005).pdf

68-mum-2003-cancelled pages(24-01-2005).pdf

68-mum-2003-claims(granted)-(24-01-2005).doc

68-mum-2003-claims(granted)-(24-01-2005).pdf

68-mum-2003-correspondence(24-01-2005).pdf

68-mum-2003-correspondence(ipo)-(12-01-2005).pdf

68-mum-2003-drawing(24-01-2005).pdf

68-mum-2003-form 1(05-05-2003).pdf

68-mum-2003-form 19(08-09-2003).pdf

68-mum-2003-form 2(granted)-(24-01-2005).doc

68-mum-2003-form 2(granted)-(24-01-2005).pdf

68-mum-2003-form 3(17-01-2003).pdf

68-mum-2003-power of authority(17-01-2003).pdf

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