MXPA97001147A - Best transmission - Google Patents

Best transmission

Info

Publication number
MXPA97001147A
MXPA97001147A MXPA/A/1997/001147A MX9701147A MXPA97001147A MX PA97001147 A MXPA97001147 A MX PA97001147A MX 9701147 A MX9701147 A MX 9701147A MX PA97001147 A MXPA97001147 A MX PA97001147A
Authority
MX
Mexico
Prior art keywords
gear
input
distal
engagement
wandering
Prior art date
Application number
MXPA/A/1997/001147A
Other languages
Spanish (es)
Other versions
MX9701147A (en
Inventor
Ostrowski Stanislaw
Original Assignee
Humming Bird Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/290,237 external-priority patent/US5556355A/en
Application filed by Humming Bird Inc filed Critical Humming Bird Inc
Publication of MXPA97001147A publication Critical patent/MXPA97001147A/en
Publication of MX9701147A publication Critical patent/MX9701147A/en

Links

Abstract

The present invention relates to a transmission device comprising: an input shaft for receiving rotational power from a connected power source, a fixed input gear co-axially mounted on the input shaft, at least one intermediate planetary gear placed in gear engagement with the fixed input gear, an intermediate shaft concentrically coupled to at least one intermediate planetary gear in a fixed ratio, at least one secondary planetary gear rigidly coupled to the intermediate shaft and having a different gear speed than the planetary gear intermediate so that the intermediate shaft and the at least one of the intermediate or secondary planetary gears form at least one multi-gear planetary member, a central gear positioned in engagement engagement with the secondary planetary gear and which is positioned in substantial coaxial orientation with respect to the input gear and the input shaft, and output means that have the intermediate shaft rotatably hinged therein to (i) support the intermediate and secondary planetary gears in engagement engagement with the input gear and the center gear, respectively and (ii) rotate at a different speed from the angular rotation from the input shaft sensitive to the rotational movement of the planetary gears in relation to the center gear

Description

IMPROVED TRANSMISSION BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to the field of mechanical transmissions. More particularly, it refers to transmissions that significantly mize energy degradation. 2. BACKGROUND ART The transmission devices are well known in the field of motor vehicles to convert and transmit the energy generated by a motor to an output shaft. A persistent problem in transmissions, and more, if not in all mechanical devices, is the effect of vibration and other reactionary forces that result in the degradation of energy. It is well known in the field of physics that a single isolated force is an impossibility - any single force is only one aspect of a mutual interaction between two bodies. When a first body exerts a force on a second body, the second body always exerts an equal and opposite "reaction" force on the first body. In mechanical transmissions, the gearbox and other stabilizing structures provide the eventual reaction force, in response to the force of the engine, necessary to keep the gears together and keep them in gear adjustment. Such a stabilizing structure must often absorb large amounts of energy, much of which is released in the form of vibrational movement, heat and sound. The repeated trembling and shaking of the vibrational movement weakens the structure and its various interconnections, and the heating / cooling cycles weaken the material. An improved transmission that mizes the degradation of energy and the accompanying vibration, heat and sound is of common interest. OBJECTIVES AND SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an improved transmission for transferring power from a first body to a second body. It is another object of the invention to provide such transmission that is relatively simple in design and operation. The above objectives and others not specifically cited are made in a specific illustrative embodiment of an improved transmission to transfer power. The first and second engaging means are each configured for the integral rigid connection to the first and second power-carrying bodies respectively. A third engagement means is placed in simultaneous engagement engagement with the first and second engagement means such that said first and second engagement means are placed substantially in co-axial orientation. The engagement means are configured in such a way that the rotation of one of the three relative engagement means towards another of said three engagement means causes the rotation of the remaining engagement means through the various gear adjustments to carry out by this a power transfer from said one of the three meshing means to said remaining meshing means. The additional objects and advantages of the invention will be set forth in the description that follows, and in part will be apparent from the description, or may be learned by practicing the invention. The objects and advantages of the invention can be realized and obtained by means of the instruments and combinations particularly indicated in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and other objects, features and advantages of the invention will be apparent from a consideration of the following detailed description presented in connection with the accompanying drawings in which: Figure 1 illustrates a partially internal side view of a transmission according to the principles of the present invention; Figure 2 illustrates a view from above of the gears of the transmission of Figure 1; Figure 3 illustrates a view from the top of an alternative embodiment of the gears of Figure 2; Figure 4 illustrates a view from the top of another alternative embodiment of the gears of Figure 2; Figure 5 illustrates a top view of a further alternative embodiment of the gears of Figure 2; and Figure 6 illustrates a cross-sectional side view of a conventional transmission device. DETAILED DESCRIPTION OF THE MODALITIES CURRENTLY PREFERRED Referring now to Figure 1, a modality of a transmission, generally designated at 10, made in accordance with the present invention is shown. The first and second gears 12 and 14, respectively, rigidly and integrally join the first and second bodies 16 and 18 respectively that carry power. A third body 20 carrying power has multi-gear wandering members 22 rotatably mounted therein. Each multi-gear wandering member 22 includes upper and lower transfer gears 22a and 22b respectively, which are rigidly interconnected and placed in substantially co-axial orientation. Alternative modalities can use multi-gear wandering members that have three or more transfer gears as can be appreciated by those who have ordinary experience in the field. In addition, although two or more errant members 22 of multiple gears are preferable, the transmission 10 can be constructed with a single multi-graft wandering member. The upper transfer gears 22a are all placed in simultaneous gear engagement with the first gear 12, and the lower transfer gears 22b are all placed in simultaneous gear engagement with the second gear 14, the first and second gear 12 being set and 14 in substantially co-axial orientation. In such a configuration, the rotation of one of the three bodies 16, 18 or 20 that carry power relative to another of said three power-carrying bodies causes the rotation of the remaining body that carries power through various gear settings, to carry out by this a power transfer from said one of the three bodies carrying power to said remaining body carrying power. In a presently preferred embodiment, the first power carrying body 16 is an elongated shaft and the configuration, the rotation of one of the three power carrying bodies 16, 18 or 20 relative to another of said three power carrying bodies causes the rotation of the remaining body that carries power through the various gear settings, to thereby carry out a power transfer from said one of the three bodies carrying power to said remaining body carrying power. In a presently preferred embodiment, the first power carrying body 16 is an elongated shaft, and the second power carrying body 18 is a hollow elongated shaft, the first shaft 16 substantially co-axially residing within the second axis 18, both of which reside in substantially co-axial alignment with the third body 20 carrying power. The third power carrying body 20 includes a hollow shaft portion 20a and portions 16a of the first axis 16 and 18a of the second axis 18 that resides substantially coaxially within the hollow shaft portion 20a of the third power carrying body. The upper portion 20b of the third power carrying body 20 operates as a positioning means for (i) holding the upper and lower gears 22a and 22b in adjustment with the first and second gears 12 and 14 in order to allow the development of a counter -Rotation as explained more fully below. With the gears held together by the upper portion 20b of the third power carrying body 20, the rotational movement of any of the first, second or third bodies will automatically move, when said body is prevented from rotating towards the remaining power carrying bodies. An illustrative application of the transmission 10 is to connect a power source 30 such as a motor (schematically represented in dotted lines) rigidly to the second body 18 carrying power and apply a rotational force from the motor to the first body 18 carrying power . It will be appreciated that this accomplishes the rotation of the first body 16 carrying power relative to the second body 18 carrying power, which causes the rotation of the third body 20 carrying power in counter-rotation in relation to said first body 18 carrying power. With the second body 18 carrying power held fixed relative to the power source 30, the first and third rotating bodies 16 and 20 carrying power can be applied to some useful purpose, such as for the upper and lower impellers 34 and 36, respectively. It will further be appreciated that by maintaining the third body 20 carrying stationary power and rotating either the first or third body 16 or 18 carrying power causes the rotation of the other first or third body carrying power in the same rotational direction, as opposed to the counter-rotation in the previous example. As shown in figure 1, the third body which carries power operates as an output means 20 having the intermediate shaft 22c rotatably hinged therein to (i) hold the intermediate and secondary errant gears 22a-b in engagement engagement with the input gear 12 and the central gear 14, respectively, and (ii) rotate at a different speed from the angular rotation from the input shaft 16 in response to the rotational movement of the errant gears 22a-b relative to the central gear 14. The advantages of the transmission 10 include the use of both action and reaction forces. This can best be understood by a comparison to a conventional transmission 100 as shown in Figure 6. The third law of motion of Isaac Newton states that "for every action there is always an opposite opposite reaction, or the mutual actions of two bodies one on the other are always the same and directed towards the opposite side ". Halliday, David and Resnick, Robert, Fundamentáis of Physics, 2a. Ed., Jhon Wiley & Sons 1986 to 71. It will be appreciated that when the motor 102 applies a rotational force to an input shaft 104 of the conventional transmission 100, the transmission 100 must exert an opposite reaction force according to Newton's third law. The effect internally is that the driving force of the motor 20 passes from the input shaft 104 to a first gear 106, a second gear 108, an output shaft 110 and the driver 112. Further inspection of Figure 6 reveals that the input and output shafts 104 and 110 are held in place by means of the walls of the gearbox 114, such that the shafts exert an action force on the gearbox and the gearbox exerts a force of opposite reaction on the axes. What happens to the internal reaction forces ?. They are released for example in the form of vibrational movement, sound and heat. The effects of these internal reaction forces can be observed by means of the gearbox 114 which vibrates and heats up as the main response to keep the rotation axes 104 and 110 in place. The Applicant has discovered the surprising result that when the prior art gearbox 114 is provided in itself with a rigidly attached gear which engages appropriately with the input and output gear members, the internal reaction forces can be applied. as usable energy instead of being released in the formed or discarded vibrational movements, heat and sound. When the transmission 10 of FIG. 1 of the applicant is compared with the conventional transmission 100 of FIG. 6, it can be seen that all three main bodies 16, 18 and 20 of the transmission 10 of the applicant are provided with densely interconnected gears, while only two of the three main bodies of the conventional transmission 100 (input shaft 104 and output shaft 110) have gears while the gearbox 114 does not. The second body 18 carrying power is analogous to the gearbox 114 of the prior art - both are joined to the power sources 30 and 102, respectively - except that the body 18 rigidly joins the second gear 14 which acts as a central gear hub around which the lower transfer gears 22b rotate in a tight manner. The net effect is that the gearbox 114 of the prior art provides an internal reaction force that is released as vibration, heat and sound, while the body of the "gearbox" 18 and the gear 14 rigidly attached to the Applicant exerts an opposing reaction force on the gears 22b through the gear adjustment. Thus the internal reaction force in the transmission 10 of the applicant includes the gear teeth of the second gear 14 acting on the lower transfer gears 22b in response to the driving force of the first gear 12 acting on the upper transfer gears 22a. In this way the internal reaction forces are used for the movement of the gear and additional power instead of being residual as vibration, heat and sound. The reaction forces are thereby complemented by the action forces in order to require less input power to provide a given power output. The coaxial relationship of the power carrying bodies 16, 18 and 20 combine with a balanced symmetric configuration of the errant members * 22 of multiple gears around the first and second gears 12 and 14 to make the lower transfer gears 22b engage against opposite sides of the second gear 14. The second gear 14 is thereby forced to react against the lower transfer gears 22b to cause additional rotational movement, so that the body of the "gearbox" 18 is not forced to provide reaction forces as in the conventional gearbox 114 of Figure 6. Thus the vibration and heating of the body 18 are significantly reduced, if not eliminated. It can be said, conceptually, that in the conventional transmission 110 of Figure 6 the reaction forces are "locked" or directed within a body which is closed, while the second gear 14 of the applicant's transmission releases the forces of reaction and puts them into use. The applicant has found that waste of energy is minimized unless it is substantially eliminated and has observed little if there is any discernible release of vibrational movement, heat or strange sound. One way to visualize the effect of the applicant's invention is to imagine comparative applications of the transmitter 10 of the applicant and the conventional transmission 100 in the absence of gravitational influence, such as in outer space. A user can apply a manual electric drill to the input shaft 104 of the conventional transmission 100 in order to rotate the impeller 112. However in such a medium without heaviness the user could not rely on his weight to conta-act the reaction power.; the user would need to be secured against a wall or other structure to prevent himself from being turned in response to the performance of the drill and the reaction force of the transmission 100. However the application of the manual drill to the first body 16 carrying power of the Transmission 10 of the applicant would give little effect in any rotation of the user in space because the reaction power on the body 18 is effectively removed as explained above to substantially eliminate a reaction force on the hand drill. It is understood that the multi-gear wandering members are balanced in their position around the second gear 14, according to the following description. The axes of rotation 22c of the multi-gear members 22 are located substantially equidistantly along a circle 40 extending coaxially about a co-axis of rotation 42 of the first and second gears 12 and 14. , in order to be placed symmetrically in relation to said co-axis 42. Therefore, when only two multi-gear wandering members 22 are used as shown in Figure 2, their rotation axes 22c are separated along a circle 40 in an angular range equal to 180 degrees. When only three multi-gear wandering members 22 are used as shown in Figure 3, their rotation axes 22c are spaced along a circle 40 in an angular range β equal to 120 degrees. When only four multi-gear wandering members 22 are used as shown in Figure 4, their rotation axes 22c are spaced along a circle 40 in an angular range? equal to 90 degrees.
The number of gear teeth of the gears 14, 16, 22a and 22b are indexed according to the number of roving members 22 of multiple gears used. For example when an even number of wandering members 22 of multiple gears are used such as two or four, gears 14, 16, 22a and 22b must each have an even number of engaging teeth. Some applications may require that the gears 14, 16, 22a and 22b each have a number of engaging teeth divisible by four. When three wandering members 22 of multiple gears are used, the gears 14, 16, 22a and 22b must each have a number of engaging teeth divisible by three. It will be appreciated that the gear installation of Figure 1 fulfills the advantages discussed above without considering which power carrying body receives the input force applied. A power source 30 can be applied to any of the three bodies carrying power 16, 18 or 20 in order to make it rotate in relation to another of said bodies. It will be appreciated that when the third power carrying body 20 is held stationary in relation to the power source 30 and the power source is applied to either the first or second power carrying body 16 or 18, the wandering members 22 of multiple gears rotate around a fixed axis of rotation without actually orbiting. In the other power application combinations with the power source 30 held stationary in relation to any of the first or second power carrying body 16 or 18, the multi-gear wandering members 22 orbit. Thus the term "wandering gear" as used herein should not be limited to refer to an orbiting gear but shall broadly refer to any gear that is in gear engagement with a central type gear. The first and second gears 12 and 14 can be referred to as "planetary gears" in accordance with the foregoing. It will be appreciated that the modality of the novel novel discovery in the transmission 10 of the requester can assume many different shapes and configurations. For example, either or both of the first and second gear 12 and 14 may instead comprise a ring having inner gear teeth instead of a planetary gear having external gear teeth. The first gear 12 of FIG. 1 having outer gear teeth 12a can, for example, be replaced with a ring 60 having inner gear teeth 60a in engagement engagement with the upper gear wheels 22a as in FIG. 5. presently preferred method for transferring power according to the present invention includes the steps of: (a) integrally and rigidly joining the first and second engaging means to the first and second power-carrying bodies respectively; (b) rotatably mounting at least two multi-gear wandering members in a third power-carrying body to thereby form a third engagement means, wherein each multi-gear wandering member includes rigidly placed interconnected upper and lower transfer gears in a substantial co-axial orientation; (c) placing all said upper transfer gears in simultaneous engagement engagement with the first engagement means and placing all said lower transfer gears in simultaneous engagement engagement with the second engagement means, such that said engaging means first and second are placed in substantial coaxial orientation and such rotation of one of the three bodies carrying power in relation to another of said three bodies carrying power causes the rotation of the body carrying remaining power through the various settings of gear to effect by this a power transfer from said one of the three bodies carrying power to said remaining body carrying power; and (d) placing axes of rotation of the multi-gear wandering members substantially equidistantly along a circle extending coaxially about a co-axis of rotation of the first and second engagement means such that said axes of rotation of the members Multi-gear wanderers are positioned symmetrically in relation to said co-axis of rotation of the first and second engaging means. It is understood that the transmission 10 has numerous applications which are covered by the appended claims. For example, a helicopter body can be secured to the second body 18 carrying power to be lifted and floated by means of the two impellers 34 and 36. The transmission 10 could be used in automobiles, machinery and the like, and could be used to simply replace the existing transmissions. As shown in Figure 1, the input shaft 16 includes a proximal section 16a and a distal output section 16b extending outwardly from opposite sides of the input gear 12 in proximal and distal directions, respectively. The exit means 20 includes a carrier body or upper portion 20b in which the intermediate shaft 22d is rotatably hinged (as shown), and a hollow outlet body 20a. The distal outlet section 16b and the hollow outlet body 20a extend outwardly from the body-limb. carrier 20b in opposite directions distal and proximal, respectively. Preferably the distal outlet section 16b and the hollow outlet body 20a are exposed for application to the output load structure such as wheels or impellers 34 and 36, and are unloaded to any surrounding structure which could prevent such an application to the output load structure. It is understood that the facilities described above are only illustrative of the application of the principles of the present invention. Numerous modifications and alternative facilities can be devised by those skilled in the art without departing from the spirit and scope of the present invention and the appended claims seek to cover such modifications and installations.

Claims (11)

  1. NOVELTY OF THE INVENTION Having described the present invention is considered as a novelty and therefore the content of the following claims is claimed as property. A transmission device comprising: an input shaft for receiving rotational power from a connected power source; a fixed input gear co-axially mounted on the input shaft; at least one intermediate errant gear placed in gear engagement with the fixed input gear; an intermediate shaft concentrically coupled to at least one intermediate errant gear in a fixed ratio; at least one secondary errant gear rigidly coupled to the intermediate shaft and having a gear speed different from the intermediate gear so that the intermediate shaft and the at least one intermediate or secondary gear interlock form at least one multi-gear wandering member; a central gear positioned in engagement engagement with the secondary wandering gear and which is positioned in substantially coaxial orientation with respect to the input gear and the input shaft; and output means having the intermediate shaft rotatably hinged thereon to (i) hold the intermediate and secondary errant gears in engagement engagement with the input gear and the center gear, respectively and (ii) rotate at a speed different from the angular rotation from the input shaft sensitive to the rotational movement of the errant gears in relation to the central gear. The transmission device according to claim 1, characterized in that the input shaft includes a proximal section and a distal exit section extending outwardly from opposite sides of the input gear in the proximal and distal directions, respectively, and wherein the exit means includes a carrier body in which the intermediate shaft is pivotably articulated and a hollow outlet body, and wherein the distal exit section and the hollow outlet body project outward from the body carrier in opposite directions distal and proximal respectively, wherein the distal outlet section and the hollow outlet body are exposed for applications to outgoing load structures and are unloaded to any surrounding structure that can prevent such application to the load structure of exit. The transmission device according to claim 2, further characterized in that it comprises: first and second loading means for loading the distal outlet section and the hollow outlet body, respectively, with the output loading structure. The transmission device according to claim 1, characterized in that the input shaft includes a proximal section and a distal output section projecting outwardly from opposite sides of the input gear in the distal and proximal directions, respectively, and wherein the outlet means includes a carrier body in which the intermediate shaft is pivotably articulated and a hollow outlet body, and wherein the distal outlet section and the hollow outlet body project outward from the carrier body in opposite distal and proximal directions, respectively, said transmission device further comprises: first and second loading means for loading the distal outlet section and the hollow outlet body, respectively, with the output loading structure. The transmission device according to claim 1, characterized in that at least one multi-gear wandering member comprises a plurality of multi-gear wandering members numbered in pairs, and wherein the input gear, the central gear, intermediate wandering gears and secondary wandering gears each comprise an even number of gear teeth. The transmission device according to claim 1, characterized in that at least one multi-gear wandering member comprises three multi-gear wandering members and wherein the input gear, the middle gear, the intermediate gear wheels and the secondary gear wheels comprises each one a number of gear teeth that is divisible by three. 7. The transmission device characterized in that it comprises: an input shaft for receiving rotational power from an annexed power source; a fixed input gear mounted co-axially on the input shaft; at least one intermediate errant gear placed in gear engagement with the fixed input gear; an intermediate shaft concentrically coupled to at least one intermediate errant gear in fixed relation; at least one secondary wandering gear rigidly coupled to the intermediate shaft and having an engagement speed that differs from the intermediate wandering gear such that the intermediate shaft and at least one of the intermediate or secondary wandering gears form at least one wandering member of multiple gears; a central gear placed in gear engagement with the secondary gear; and output means having the intermediate shaft rotatably fitted therein to (i) hold the intermediate and secondary errant gears in engagement engagement with the input gear and the center gear, respectively, and (ii) rotate in response to the rotational movement of the errant gear in relation to the central gear; wherein the input shaft includes a proximal section and a distal output section projecting out from opposite sides of the input gear in distal and proximal directions, respectively, and wherein the input means includes a carrier body in the which the intermediate shaft rotatably adjusts and a hollow outlet body, and wherein the distal outlet section and the hollow outlet body project outwardly from the carrier body in opposite distal and proximal directions, respectively, wherein the The distal outlet section and the hollow outlet body are exposed for application to the output load structure and are unloaded to any surrounding structure which may prevent such application to the output load structure. The transmission device according to claim 7, further characterized in that it comprises: first and second load means for loading the distal outlet section and the hollow outlet body, respectively, with the output load structure. 9. A method for transferring power, characterized in said method because it comprises the steps of: (a) fixedly mounting an input gear coaxially on an input shaft; (b) fixedly mounting an intermediate wandering gear and a secondary wandering gear co-axially on an intermediate shaft to thereby form at least one multi-gear wandering member, wherein the secondary wandering gear has a speed of engagement that differs from intermediate wandering gear; (c) selecting a central gear; (d) placing the intermediate errant gear in gear adjustment with the fixed input gear and the secondary gear in gear engagement with the center gear; and (e) pivotally articulating the intermediate shaft in an output means for (1) maintaining the intermediate and secondary errant gears in engagement engagement with the input gear and the central gear respectively; and (2) rotating at a different speed than the angular rotation from the input shaft in response to the rotational movement of the errant gears in relation to the center gear; and (f) rigidly coupling a power source to the central gear so that said central gear remains in a fixed orientation with respect to said power source, and applying said power source to the input shaft to thereby cause the rotational movement of said input shaft and the input gear connected in relation to said central gear and in response to the rotational movement of the errant gears. The method according to claim 9, characterized in that step (a) further comprises mounting the input gear on an input shaft having a proximal section and a distal output section such that said proximal and distal sections project toward further from the opposite sides of input gear in proximal and distal directions, respectively, and wherein step (e) further comprises pivotally articulating the intermediate shaft within an output means having a carrier body in which the shaft intermediate has been articulated and a hollow outlet body in such a manner that said distal outlet section and the hollow outlet body project outwardly from the carrier body in opposite directions distally and proximally, respectively, and so that the outlet section The distal and the hollow outlet body are exposed for application to the output load structure and are unloaded to any surrounding structure that can be to avoid such application to the output load structure, said method further comprises the step of: (g) loading the distal outlet section with the output load structure. The method according to claim 10, characterized in that step (g) further comprises charging the hollow outlet body with the output loading structure.
MX9701147A 1994-08-15 1995-08-14 Improved transmission. MX9701147A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08290237 1994-08-15
US08/290,237 US5556355A (en) 1994-08-15 1994-08-15 Transmission with planetary multi-gear members
PCT/US1995/010299 WO1996005452A1 (en) 1994-08-15 1995-08-14 Improved transmission

Publications (2)

Publication Number Publication Date
MXPA97001147A true MXPA97001147A (en) 1997-06-01
MX9701147A MX9701147A (en) 1997-06-28

Family

ID=23115100

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9701147A MX9701147A (en) 1994-08-15 1995-08-14 Improved transmission.

Country Status (8)

Country Link
US (1) US5556355A (en)
JP (1) JPH10504373A (en)
CN (1) CN1158653A (en)
AU (1) AU685000B2 (en)
BR (1) BR9508589A (en)
CA (1) CA2197685A1 (en)
MX (1) MX9701147A (en)
WO (1) WO1996005452A1 (en)

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US6186922B1 (en) * 1997-03-27 2001-02-13 Synkinetics, Inc. In-line transmission with counter-rotating outputs
DE19963597A1 (en) * 1999-12-23 2001-07-26 Mannesmann Ag Gearboxes, in particular for wind turbines
US6460802B1 (en) 2000-09-13 2002-10-08 Airscooter Corporation Helicopter propulsion and control system
US6886777B2 (en) 2001-02-14 2005-05-03 Airscooter Corporation Coaxial helicopter
US7198223B2 (en) * 2001-02-14 2007-04-03 Airscooter Corporation Ultralight coaxial rotor aircraft
WO2003091099A2 (en) * 2002-04-25 2003-11-06 Airscooter Corporation Rotorcraft
US6902508B2 (en) * 2003-06-18 2005-06-07 Clayton International, Inc. Helicopter mainshaft assembly and drive assembly including the same
US8382627B2 (en) * 2010-11-24 2013-02-26 Huiyang Allan Plastic & Electric Industries Co., Limited Multiple drive system for food processor and mixer
JP5677141B2 (en) * 2011-03-08 2015-02-25 本田技研工業株式会社 In-wheel type wheel drive device
WO2021107618A1 (en) * 2019-11-28 2021-06-03 변상섭 Amphibious mobility power transmission device

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US1334401A (en) * 1918-10-31 1920-03-23 Delaunay Belleville Ets Automobile torpedo
US2261104A (en) * 1939-06-30 1941-11-04 Birkigt Louis Means for driving two coaxial shafts in opposite directions
DD129706A1 (en) * 1977-02-14 1978-02-01 Helmut Boehme GEARBOX FOR PROJECTOR CONTROL IN PLANETARIA
US4326834A (en) * 1979-06-05 1982-04-27 Stanislaw Ostrowski Helicopter rotor assembly and blade pitch control
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