WO2019021198A1

WO2019021198A1 - A motion conversion mechanism for a reciprocating piston device

Info

Publication number: WO2019021198A1
Application number: PCT/IB2018/055537
Authority: WO
Inventors: Dattatraya Rajaram Shelke
Original assignee: Dattatraya Rajaram Shelke
Priority date: 2017-07-26
Filing date: 2018-07-25
Publication date: 2019-01-31

Abstract

The present disclosure presents a motion conversion mechanism for reciprocating piston devices like pumps, compressors, engines etc., which comprises a plurality of links and connecting rods to convert rotary drive to linear motion of pistons. The mechanism comprises a connecting rod which converts the rotary motion of drive gears to an angular oscillation of a plurality of connected links. Said connecting links convert the angular oscillatory motion to linear motion of a second connecting rod, which is, in turn, connected to a piston.

Description

A MOTION CONVERSION MECHANISM FOR A RECIPROCATING PISTON

DEVICE

TECHNICAL FIELD

[0001] The present disclosure relates to the field of reciprocating piston devices. In particular, the present disclosure relates to a motion conversion link mechanism to convert feed rotational torque to linear force to drive pumps or compressors and feed linear force to rotational torque to drive engines.

BACKGROUND

[0002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.

[0003] A means to convert a rotary motion into a linear motion or vice versa is vital in industries operating in the fields of pumps and engines. Some examples are industries dealing in water pumps, gas compressors, engines etc. An important factor to be considered is that each of the applications have unique requirements in terms of conversion of motion, such as, a piston type water pump requires constant force at piston, gas compressors require a gradually increasing force during compression stroke and in an engine, linear reciprocating motion of piston needs to transfer maximum power to rotary system during power stroke etc.

[0004] To meet such requirements, various motion conversion mechanisms are known in the art. Some examples include crank slider mechanism and scotch yoke mechanism, which, for a given torque can produce variable linear force. However, a limitation of such mechanisms is that they are not efficient at driving positive displacement pumps with high input torque and low angular velocity.

[0005] In the case of engine driven compressors or pumps, where linear input motion is converted to rotary motion, a crank shaft is used to realise the conversion. Here, the linear motion is converted to rotary torque, which is further converted to linear motion again. This causes significant transmission losses, thereby decreasing the efficiency of the system. Further, the engine and the compressor or pump are linked by a drive such as chains or belts, which can cause slip and lead to further transmission loss and reduce the efficiency of the system. [0006] In the case of the above mechanisms, there is generally a large variation in turning moment, and to overcome this problem a large and heavy flywheel is required. This causes an increase in the weight of the system and generate primary and secondary vibrations. Further, the use of a crankshaft in the above mechanisms generates side thrust and additional vibrations.

[0007] There is therefore a need in the art for a motion conversion mechanism that is light and compact and can operate with minimal vibrations. Said mechanism must also be capable of providing variable torque and linear force.

[0008] All publications herein are incorporated by reference to the same extent as if each individual publication or patent application were specifically and individually indicated to be incorporated by reference. Where a definition or use of a term in an incorporated reference is inconsistent or contrary to the definition of that term provided herein, the definition of that term provided herein applies and the definition of that term in the reference does not apply.

[0009] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, reaction conditions, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term "about". Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.

[0010] As used in the description herein and throughout the claims that follow, the meaning of "a," "an," and "the" includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on" unless the context clearly dictates otherwise.

[0011] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. "such as") provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.

[0012] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.

OBJECTS OF THE INVENTION

[0013] A general object of the present disclosure is to provide a pump with a motion conversion mechanism that operates with minimal vibration.

[0014] Another object of the present disclosure is to provide a motion conversion mechanism that is compact.

[0015] Another object of the present invention is to provide a pump where rotary drive of the gear is converted to linear motion of the piston and vice versa.

[0016] Another object of the present disclosure is to provide a mechanism where transmission of linear motion can happen directly without having to be converted first into rotary motion,

[0017] Another object of the present disclosure is to provide a mechanism where the reciprocating pistons can be axial or perpendicular to one another.

SUMMARY

[0018] The present disclosure relates to the field of reciprocating piston devices. In particular, the present disclosure relates to a motion conversion link mechanism to convert feed rotational torque to linear force to drive pumps or compressors and feed linear force to rotational torque to drive engines. [0019] In an aspect, a pump is disclosed with a motion conversion link mechanism, said pump comprising: one or more drive gears to supply drive to the pump; one or more pistons; and the motion conversion link mechanism. In an embodiment, the drive can also be supplied by a gear shaft.

[0020] In another aspect, said motion conversion link mechanism further comprises: one or more crank pins affixed on the one or more drive gears; a plurality of first connecting rods; a plurality of second connecting rods; and a plurality of links.

[0021] In another aspect, each piston is driven linearly by at least one first connecting rod. Said piston is connected to the first connecting rod at a first end of the connecting rod. In an embodiment, the pistons can be mounted axial to one another or can be mounted perpendicular to one another.

[0022] In another aspect, one or more second connecting rods are disposed in the mechanism, wherein the second connecting rods are connected to each of the one or more crank pins.

[0023] In another aspect, the second connecting rods are driven by the crank pins to supply drive to the mechanism. Said crank pins affixed to and disposed on the drive gears and rotate with the drive gears. As the crank pins rotate, second end of the second connecting rods move to and fro. In an embodiment, the crank pins can be counter rotating and can further be co-axial.

[0024] In another aspect, a plurality of links are disposed in the mechanism. At least two links are connected to a second end of the second connecting rod, such that the second end of the first link and the first end of the second link are connected to the second end of the second connecting rod.

[0025] In another aspect, the first end of the first link is fixed, and the second end of the second link is connected to a second end of the first connecting rod. This causes the joint of the two links and the second end of the second connecting rod to be constrained to only move in a curved trajectory.

[0026] In another aspect, due to the rotation of the crank pin, the second end of second connecting rod oscillates to and fro, and causes said joint of links and the second connecting rod to oscillate angularly. This results in linear motion being imparted to the first connecting rod.

[0027] In an alternate aspect, at least two links are pivoted, and connected to the second end second connecting rod, such that both ends of the links and the second end of the second connecting rod are constrained to move in a curved trajectory. This causes said joint of links and the second connecting rod to oscillate angularly and resulting in linear motion being imparted to the first connecting rod.

[0028] In another aspect, the first end of the first connecting rod is connected to the piston and causes linear reciprocating motion to be imparted to the piston.

[0029] In another aspect, each of the drive gears and their corresponding connecting rods and links are so disposed as to physically mirror one another. This causes the vibrations caused by the any of the gears to be cancelled by the vibrations of another of the gears, resulting in a motion conversion link mechanism with minimal vibrations.

[0030] In an embodiment, the at least two links can have a slot, which holds the crank pins. As the crank pins rotate, the links oscillate angularly.

[0031] In another embodiment, the mechanism can work in the reverse, wherein a drive can be supplied to the pistons and can result in rotary motion of the drive gears.

[0032] In another embodiment, one of the pistons can be disposed in a cylinder of an engine. As fluid pressure drives the piston, the linear motion is passed along the link mechanism to the other pistons. There is no need to convert the linear drive to a rotary motion.

[0033] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF DRAWINGS

[0034] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0035] FIG. 1 illustrates a side view of an exemplary implementation of a pump with the motion converter link mechanism, in accordance with an embodiment of the present invention.

[0036] FIG. 2 illustrates an isometric view of the exemplary implementation of a pump with the motion converter link mechanism, in accordance with an embodiment of the present invention.

[0037] FIG. 3 illustrates the working principle of motion converter link mechanism of the pump, in accordance with an embodiment of the present disclosure. [0038] FIG. 4 illustrates an exemplary sectional view of the proposed pump wherein the motion converter link mechanism is arranged in minimum space.

[0039] FIG. 5 illustrates an exemplary pump with motion converter link mechanism, in accordance with another embodiment of the present disclosure.

[0040] FIG. 6 illustrates an exemplary pump with motion converting link mechanism wherein two pistons are driven using co-axial counter pins, in accordance with an embodiment of the present invention.

[0041] FIG. 7 illustrates an exemplary pump with motion converting link mechanism wherein four pistons are driven using co-axial counter pins, in accordance with an embodiment of the present invention.

[0042] FIG. 8 illustrates an exemplary pump with motion converting link mechanism wherein two pistons are driven using counter pins, in accordance with an embodiment of the present invention.

[0043] FIG. 9 illustrates an exemplary pump with motion converting link mechanism wherein four pistons are driven using counter pins, in accordance with an embodiment of the present invention.

[0044] FIG. 10 illustrates an exemplary pump with motion converting link mechanism wherein two perpendicular pistons are driven using co-axial counter pins, in accordance with an embodiment of the present invention.

[0045] FIG. 11 illustrates an exemplary pump with motion converting link mechanism wherein two perpendicular pistons are driven using counter pins, in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION

[0046] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the scope of the present disclosure as defined by the appended claims.

[0047] If the specification states a component or feature "may", "can", "could", or "might" be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic. [0048] As used in the description herein and throughout the claims that follow, the meaning of "a," "an," and "the" includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on" unless the context clearly dictates otherwise.

[0049] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. These exemplary embodiments are provided only for illustrative purposes and so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.

[0050] Each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the "invention" may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the "invention" will refer to subject matter recited in one or more, but not necessarily all, of the claims.

[0051] All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., "such as") provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.

[0052] Various terms as used herein are shown below. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.

[0053] The present disclosure relates to the field of reciprocating piston devices. In particular, the present disclosure relates to a motion conversion link mechanism to convert feed rotational torque to linear force to drive pumps or compressors and feed linear force to rotational torque to drive engines.

[0054] In an aspect, a pump is disclosed with a motion conversion link mechanism, said pump comprising: one or more drive gears to supply drive to the pump; one or more pistons; and the motion conversion link mechanism. In an embodiment, the drive can also be supplied by a gear shaft.

[0055] In another aspect, said motion conversion link mechanism further comprises: one or more crank pins affixed on the one or more drive gears; a plurality of first connecting rods; a plurality of second connecting rods; and a plurality of links.

[0056] In another aspect, each piston is driven linearly by at least one first connecting rod. Said piston is connected to the first connecting rod at a first end of the connecting rod. In an embodiment, the pistons can be mounted axial to one another or can be mounted perpendicular to one another.

[0057] In another aspect, one or more second connecting rods are disposed in the mechanism, wherein the second connecting rods are connected to each of the one or more crank pins.

[0058] In another aspect, the second connecting rods are driven by the crank pins to supply drive to the mechanism. Said crank pins affixed to and disposed on the drive gears and rotate with the drive gears. As the crank pins rotate, second end of the second connecting rods move to and fro. In an embodiment, the crank pins can be counter rotating and can further be co-axial.

[0059] In another aspect, a plurality of links are disposed in the mechanism. At least two links are connected to a second end of the second connecting rod, such that the second end of the first link and the first end of the second link are connected to the second end of the second connecting rod. [0060] In another aspect, the first end of the first link is fixed, and the second end of the second link is connected to a second end of the first connecting rod. This causes the joint of the two links and the second end of the second connecting rod to be constrained to only move in a curved trajectory.

[0061] In another aspect, due to the rotation of the crank pin, the second end of second connecting rod oscillates to and fro, and causes said joint of links and the second connecting rod to oscillate angularly. This results in linear motion being imparted to the first connecting rod.

[0062] In an alternate aspect, at least two links are pivoted, and connected to the second end second connecting rod, such that both ends of the links and the second end of the second connecting rod are constrained to move in a curved trajectory. This causes said joint of links and the second connecting rod to oscillate angularly and resulting in linear motion being imparted to the first connecting rod.

[0063] In another aspect, the first end of the first connecting rod is connected to the piston and causes linear reciprocating motion to be imparted to the piston.

[0064] In another aspect, each of the drive gears and their corresponding connecting rods and links are so disposed as to physically mirror one another. This causes the vibrations caused by the any of the gears to be cancelled by the vibrations of another of the gears, resulting in a motion conversion link mechanism with minimal vibrations.

[0065] In an embodiment, the at least two links can have a slot, which holds the crank pins. As the crank pins rotate, the links oscillate angularly.

[0066] In another embodiment, the mechanism can work in the reverse, wherein a drive can be supplied to the pistons and can result in rotary motion of the drive gears.

[0067] In another embodiment, one of the pistons can be disposed in a cylinder of an engine. As fluid pressure drives the piston, the linear motion is passed along the link mechanism to the other pistons. There is no need to convert the linear drive to a rotary motion.

[0068] For the simplicity of understanding of the subject matter, following reference numerals are used for associated/corresponding feature/elements of the proposed pump with motion converter link mechanism: la, lb - Drive gears

2a, 2b - Crank pins

3 - Link connecting piston and connecting rod 3a, 3b - Links

4a, 4b - Links

4g, 4h - Cross links

5 - Connecting rod pin

6- Connecting rod

6a, 6b - Connecting rods

7 - Connecting rod pin

7a, 7b - Slots formed in link body

8 - Piston

9 - Cylinder

11a, 1 lb - Rotary j oints

12a, 12b - Pins fixed on body

13 - Inlet fluid conduit

14 - Outlet fluid conduit

15 - Body

[0069] FIG. 1 illustrates a side view of an exemplary implementation of a pump with the motion converter link mechanism, in accordance with an embodiment of the present invention. In an embodiment, the pump comprises inlet fluid conduit 13 and outlet fluid conduit 14 disposed over a cylinder 9. A piston 8 reciprocates linearly within the cylinder 9 and pumps fluid out through the outlet fluid conduit 14.

[0070] In another embodiment, a connecting rod 6 transmits linear motion to the piston, from the proposed motion converter link mechanism of the present disclosure. The mechanism comprises a closed loop link chain formed by links designated 3a, 3b, 4a and 4b. Links 3 a and 4a are linked by a movable joint 11a, and links 3b and 4b are linked by movable joint 1 lb. In another embodiment, the other end of links 4a and 4b are restricted by joints 12a and 12b respectively.

[0071] FIG. 2 illustrates an isometric view of the exemplary implementation of a pump with the motion converter link mechanism, in accordance with an embodiment of the present invention.

[0072] In another embodiment, the rotational drive to the pump is supplied through the gear la. In an exemplary embodiment, through a system of pivot gears 1 and 2, the gear lb is also driven, such that lb is driven in a direction opposite to the gear la. In another exemplary embodiment, the gears la and lb rotate at the same speed. [0073] In another embodiment, the crank pins 2a and 2b situated on gears la and 1 b respectively are coupled to links 6a and 6b respectively. In a further embodiment, links 6a and 6b are connected to joints 11a and 1 lb.

[0074] In another embodiment, the links 3a and 3b join at connecting rod pin 5. Link 6 is coupled in between connecting rod pins 5 and 7 and imparts linear motion to the piston 8.

[0075] In another embodiment, each set of link and components in the mechanism has its counterpart mirroring its actions. In an instance, gears la and lb rotate in opposite directions and are attached to opposite sides of the body. The fixed pins 12 a and 12 b are located on opposite sides of the body.

[0076] In another embodiment, the presence of complimentary components cancels out vibrations generated by each other and helps minimise total vibrations generated by the proposed mechanism.

[0077] FIG. 3 illustrates the working principle of motion converter link mechanism of the pump, in accordance with an embodiment of the present disclosure.

[0078] In another embodiment, as the gears la and lb rotate, the crank pins 2a and 2b impart motion to links 6a and 6b respectively. As the crank pins 2a and 2b rotate towards the base of the pump, links 6a and 6b move downwards, causing the joints 11a and 1 lb to move respectively.

[0079] In another embodiment, motion to joint 11a causes motion in links 3a and 4a. Similarly, motion to joint 1 lb causes motion in links 3b and 4b.

[0080] In another embodiment, as links 4a an 4b are constrained by fixed joints 12a and 12b respectively, the joints 11a and l ib traverse a curved downward trajectory due to the downward motion of links 6a and 6b respectively.

[0081] In another embodiment, the curved downward trajectory of the joints 11a and 1 lb causes downward motion at connecting rod pin 5 through motion of links 3a and 3b.

[0082] In another embodiment, as the crank pins 2a and 2b rotate towards the top of the pump, links 6a and 6b move upwards, causing the joints 11a and 1 lb to move respectively.

[0083] In another embodiment, as links 4a an 4b are constrained by fixed joints 12a and 12b respectively, the joints 11a and l ib traverse a curved upward trajectory due to the upward motion of links 6a and 6b respectively.

[0084] In another embodiment, the curved upward trajectory of the joints 11a and l ib causes upward motion at connecting rod pin 5 through motion of links 3a and 3b. [0085] In an aspect, connecting rod pin 5 is connected to a connecting rod 6, which in turn is connected to a connecting rod pin 7. Linear motion is transmitted to the piston 8 through the connecting rod 6 and connecting rod pin 7, from the connecting rod pin 5.

[0086] In an aspect, one complete rotation of gears la and lb cause one upward and one downward stroke of the piston 8.

[0087] In an embodiment, the piston 8 pushed fluid in the cylinder 9 out through outlet 14.

[0088] FIG. 4 illustrates an exemplary sectional view of the proposed pump wherein the motion converter link mechanism is arranged in minimum space.

[0089] In an embodiment, the gears la an lb are located towards the base of the pump, and the motion converter link mechanism is disposed above the gears la and lb. Links 6a and

6b move links 4a and 4b respectively such that links 4a and 4b oscillate.

[0090] In another embodiment, body 15 acts as a fixed joint 12a and 12b for links 4a and 4b respectively. Links 3a and 3b located at the free ends of links 4a and 4b respectively move linearly up and down and pass the linear motion to connecting rod pin 7.

[0091] FIG. 5 illustrates an exemplary pump with motion converter link mechanism, in accordance with another embodiment of the present disclosure.

[0092] In an embodiment, links 4a and 4b are linked to links 6a and 6b respectively. Links 4a and 4b are angularly oscillated by the sliding of the co-axial crank pins 2a and 2b through a slot in the links 4a and 4b respectively. The angular oscillation of the links 4a and 4b translate to linear motion of second end of links 6a and 6b respectively, resulting in linear reciprocation of the piston 8.

[0093] In another embodiment, for every rotation of the gears la and lb, four strokes of the piston are obtained.

[0094] FIG. 6 illustrates an exemplary pump with motion converting link mechanism wherein two pistons are driven using co-axial counter rotatingcrank pins, in accordance with an embodiment of the present invention.

[0095] In an embodiment, a closed loop is formed by links 4g, 4h and 3. Links 4g and 4h are pivoted at pin 2 and are angularly oscillated by co-axial counter rotating crank pins 2a and 2b via links 6a and 6b respectively. The angular motion of links 4g and 4h result in linear motion of second end of links 3, which results in the reciprocation of the pistons 8. In another embodiment, the reciprocation of the piston is in phase.

[0096] In an exemplary embodiment, a drive can be provided at the pistons to generate rotary motion at the gear shaft. [0097] In another exemplary embodiment, when used in combination with a pump and an engine, at least one of the pistons is disposed in the engine cylinder, which transfers the fluid force to the other piston via the links, without having to convert it to rotational torque.

[0098] FIG. 7 illustrates an exemplary pump with motion converting link mechanism wherein four pistons are driven using co-axial counter rotating crank pins, in accordance with an embodiment of the present invention.

[0099] In another embodiment, links 4g and 4h are pivoted at pin 2 and are angularly oscillated by co-axial counter rotating crank pins 2a and 2b via links 6a and 6b respectively. The angular motion of links 4g and 4h result in linear motion of second end of links 3, which results in the reciprocation of the pistons 8.

[00100] In an exemplary embodiment, two of the four pistons are move in the opposite direction to the other two pistons.

[00101] FIG. 8 illustrates an exemplary pump with motion converting link mechanism wherein two pistons are driven using counter rotating crank pins, in accordance with an embodiment of the present invention.

[00102] In an embodiment, links 4h and 4g are pivoted at pin 2 and are angularly rotated by counter rotating crank pins 2a and 2b via connecting rods 6a and 6b respectively. The angular motion of links 4g and 4h result in linear motion of second end of links 3, which results in the reciprocation of the pistons 8. In another embodiment, the reciprocation of the piston is in phase.

[00103] In an exemplary embodiment, a drive can be provided at the pistons to generate rotary motion at the gear.

[00104] FIG. 9 illustrates an exemplary pump with motion converting link mechanism wherein four pistons are driven using counter rotating crank pins, in accordance with an embodiment of the present invention.

[00105] In another embodiment, links 4g and 4h are pivoted at pin 2 and are angularly oscillated by counter rotating crank pins 2a and 2b via links 6a and 6b respectively. The angular motion of links 4g and 4h result in linear motion of second end of links 3, which results in the reciprocation of the pistons 8.

[00106] In an exemplary embodiment, two of the four pistons are move in the opposite direction to the other two pistons.

[00107] FIG. 10 illustrates an exemplary pump with motion converting link mechanism wherein two perpendicular pistons are driven using co-axial counter rotating crank pins, in accordance with an embodiment of the present invention. [00108] In an embodiment, links 4g and 4h are pivoted at pin 2 and are angularly oscillated by co-axial counter rotating crank pins 2a and 2b via links 6a and 6b respectively. The angular motion of links 4g and 4h result in linear motion of second end of links 3, which results in the reciprocation of the pistons 8.

[00109] In an exemplary embodiment, motion of the two pistons is out of phase. A drive can be provided at the pistons to generate rotary motion at one of the gears.

[00110] FIG. 11 illustrates an exemplary pump with motion converting link mechanism wherein two perpendicular pistons are driven using counter rotating crank pins, in accordance with an embodiment of the present invention.

[00111] In an embodiment, links 4g and 4h are pivoted at pin 2 and are angularly oscillated by counter rotating crank pins 2a and 2b via links 6a and 6b respectively. The angular motion of links 4g and 4h result in linear motion of second end of links 3, which results in the reciprocation of the pistons 8.

[00112] In an exemplary embodiment, motion of the two pistons is out of phase. A drive can be provided at the pistons to generate rotary motion at one of the gears.

[00113] In an aspect, the piston velocity is a function of length of the links. Thus, by manipulating the lengths of the links, piston velocity can be varied.

[00114] Thus, the present disclosure presents a motion converter link mechanism that can be used to convert rotary motion to linear motion and vice versa. The proposed mechanism is compact and can be used to convert and transfer motion from a single drive to multiple pistons.

[00115] Without departing from the spirit and concept of the present invention, any variations and modifications to the embodiments should be within the apprehension of those with ordinary knowledge and skills in the art, and therefore fall in the scope of the present invention which is defined by the accompanied claims. Though the present invention has been described on the basis of some preferred embodiments, those skilled in the art should appreciate that those embodiments should by no means limit the scope of the present invention. Without departing from the spirit and concept of the present invention, any variations and modifications to the embodiments should be within the apprehension of those with ordinary knowledge and skills in the art, and therefore fall in the scope of the present invention which is defined by the accompanied claims.

[00116] The present invention is a motion conversion link mechanism for a reciprocating piston device that is susceptible of modifications or variations all within the scope of the inventive concept as defined by the appended claims; any details may be replaced with technically equivalent elements. One or more of the elements above described may be differently shaped and/or positioned, can be differently coupled or positioned, etcetera. The materials, so long as they are compatible with the specific use, as well as the individual components, may be any according to the requirements and the state of the art.

[00117] Only certain features of the invention have been specifically illustrated and described herein, and many modifications and changes will occur to those skilled in the art. The invention is not restricted by the preferred embodiment described herein in the description. It is to be noted that the invention is explained by way of exemplary embodiment and is neither exhaustive nor limiting. Certain aspects of the invention that not been elaborated herein in the description are well understood by one skilled in the art. Also, the terms relating to singular form used herein in the description also include its plurality and vice versa, wherever applicable. Any relevant modification or variation, which is not described specifically in the specification are in fact to be construed of being well within the scope of the invention. The appended claims are intended to cover all such modifications and changes which fall within the spirit of the invention.

[00118] The foregoing description of the specific embodiments will so fully reveal the general nature of the invention that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation.

[00119] It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms "comprises" and "comprising" should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C ....and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc. The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the scope of the appended claims.

[00120] While embodiments of the present disclosure have been illustrated and described, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the scope of the disclosure, as described in the claims.

[00121] In the description of the present specification, reference to the term "one embodiment," "an embodiments", "an example", "an instance", or "some examples" and the description is meant in connection with the embodiment or example described, the particular feature, structure, material, or characteristic included in the present invention, at least one embodiment or example. In the present specification, the term of the above schematic representation is not necessarily for the same embodiment or example. Furthermore, the particular features structures, materials, or characteristics described in any one or more embodiments or examples in proper manner. Moreover, those skilled in the art can be described in the specification of different embodiments or examples are joined and combinations thereof.

[00122] All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.

[00123] Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.

[00124] The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.

[00125] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION

[00126] The present disclosure provides a motion conversion link mechanism to convert feed rotational torque to linear force to drive pumps or compressors and feed linear force to rotational torque to drive engines that operates with minimal vibration.

[00127] The present disclosure provides a motion conversion mechanism that is compact.

[00128] The present disclosure provides a pump where rotary drive of the gear is converted to linear motion of the piston and vice versa.

[00129] The present disclosure provides a mechanism where transmission of linear motion can happen directly without having to be converted first into rotary motion,

[00130] The present disclosure provides a mechanism where the reciprocating pistons can be axial or perpendicular to one another.

Claims

I Claim:

1. A motion conversion mechanism for a reciprocating piston device comprising:

one or more drive gears, to supply drive to said reciprocating piston device; one or more crank pins, wherein at least one crank pin is affixed to each of the one or more drive gears;

one or more pistons, driven by at least one of a plurality of first connecting rods and attached to a first end of said at least one first connecting rod;

a plurality of second connecting rods, wherein first end of at least one of the second connecting rods is connected to at least one of the crank pins, and wherein circular motion of the one or more crank pins translate to a curved trajectory motion of corresponding second ends of the plurality of second connecting rods; and

a plurality of links, wherein at least two links are connected to a second end of at least one second connecting rod, and wherein one end of the one of at least two links is fixed and one end of the other of at least two links is connected to a second end of the at least one first connecting rod,

wherein said at least two links oscillate angularly by the movement of the at least one second connecting rod, and

wherein said at least one of first connecting rods moves linearly to linearly reciprocate the corresponding one or more pistons.

2. The motion conversion mechanism for a reciprocating piston device as claimed in claim 1, wherein at least two links are pivoted, and connected to the second end of at least one second connecting rod, such that both ends of the at least two links and the second end of the at least one second connecting rod are constrained to move in a curved trajectory.

3. The motion conversion mechanism for a reciprocating piston device as claimed in claim 1, wherein said one or more crank pins are any or a combination of co-axial and counter rotating.

4. The motion conversion mechanism for a reciprocating piston device as claimed in claim 1, wherein the one or more pistons are axial or perpendicular to one another.

5. The motion conversion mechanism for a reciprocating piston device as claimed in claim 1, wherein any of the one or more pistons is disposed in an engine cylinder and at least one of the one or more pistons is disposed in pump cylinder.

6. The motion conversion mechanism for a reciprocating piston device as claimed in claim 1, wherein at least two of the plurality of links have a slot.

7. The motion conversion mechanism for a reciprocating piston device as claimed in claim 1, wherein the one or more pistons is supplied drive to generate rotary motion at the one or more gears.

8. The motion conversion mechanism for a reciprocating piston device as claimed in claim 1, wherein drive is supplied to said reciprocating piston device by a gear shaft.

9. The motion conversion mechanism for a reciprocating piston device as claimed in claim 1, wherein each of the one or more drive gears and their corresponding first connecting rods, second connecting rods and links are so arranged as to physically mirror one another.