GB2504072A - Contra-rotating bevel gear transmission with flexible coupling - Google Patents

Contra-rotating bevel gear transmission with flexible coupling Download PDF

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Publication number
GB2504072A
GB2504072A GB1212578.7A GB201212578A GB2504072A GB 2504072 A GB2504072 A GB 2504072A GB 201212578 A GB201212578 A GB 201212578A GB 2504072 A GB2504072 A GB 2504072A
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GB
United Kingdom
Prior art keywords
shaft
coupled
bevel gear
transmission
transmission according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1212578.7A
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GB201212578D0 (en
GB2504072B (en
Inventor
Paul Levell
David John Scott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Romax Technology Ltd
Original Assignee
Romax Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Romax Technology Ltd filed Critical Romax Technology Ltd
Priority to GB1212578.7A priority Critical patent/GB2504072B/en
Publication of GB201212578D0 publication Critical patent/GB201212578D0/en
Priority to CN2012206799813U priority patent/CN203114536U/en
Priority to PCT/GB2013/051891 priority patent/WO2014013237A1/en
Publication of GB2504072A publication Critical patent/GB2504072A/en
Application granted granted Critical
Publication of GB2504072B publication Critical patent/GB2504072B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0066—Connecting devices for joining an upper structure with an implant member, e.g. spacers with positioning means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/2854—Toothed gearings for conveying rotary motion with gears having orbital motion involving conical gears
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/0078—Connecting the upper structure to the implant, e.g. bridging bars with platform switching, i.e. platform between implant and abutment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F03D15/10—Transmission of mechanical power using gearing not limited to rotary motion, e.g. with oscillating or reciprocating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/2809—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels
    • F16H1/2827—Toothed gearings for conveying rotary motion with gears having orbital motion with means for equalising the distribution of load on the planet-wheels by allowing limited movement of the planet carrier, e.g. relative to its shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/006—Connecting devices for joining an upper structure with an implant member, e.g. spacers with polygonal positional means, e.g. hexagonal or octagonal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/40—Transmission of power
    • F05B2260/403—Transmission of power through the shape of the drive components
    • F05B2260/4031—Transmission of power through the shape of the drive components as in toothed gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/06—Differential gearings with gears having orbital motion
    • F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
    • F16H2048/085—Differential gearings with gears having orbital motion comprising bevel gears characterised by shafts or gear carriers for orbital gears
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Epidemiology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Wind Motors (AREA)
  • Gear Transmission (AREA)

Abstract

A bevel gear contra-rotating transmission 100, e.g. for a wind turbine, has two shafts 106, 110 coupled to a reversing mechanism 102 which enables the shafts to be rotated at the same speed but in opposite rotational directions. The reversing mechanism 102 includes two bevel gear wheels 104,108 coupled to the two shafts 106,110, and further bevel gear wheels 112 supported by carrier 114 which engage with the two bevel gear wheels 104,108. Reversing mechanism 102 is supported by a flexible coupling means 114 between housing 122 and bevel gear carrier 114. The flexible coupling 114 comprises first and second crowned spline arrangement 118, 120 having equally spaced segments spanning 30o or teeth spanning 360o. This arrangement achieves even load sharing between gear meshes. First and second turbines are connected to the shafts 106, 110 and a generator is connected to an output side of shaft 106. In another embodiment, propellers replace the turbines and an engine replaces the generator.

Description

Contra-Rotating Transmission The present invention is related to contra-rotating transmissions. In particular it is related to contra-rotating transmissions for wind or water turbine applications.
Load sharing between gears is difficult in transmissions that enable two concentric shafts to be rotated at the same speed but in opposite rotational directions.
0B696653A and W09600349A1 disclose dual rotor turbines for generating electricity from wind which combine rotational energy from each rotor using bevel gears to drive a single generator. G32487302A describes a dual rotor arrangement for a wind or water turbine which uses a planetary gearbox to combine rotational energy. The gearbox has a first input connected to a first rotor, a second input connected to a second rotor; and a generator connected to the output. A rotational speed of the output is determined by a relative rotational speed of the first and second rotors so that the generator produces electricity of a desired frequency.
According to an aspect of the present invention, there is provided a transmission having a first shaft and a second shaft concentric with the first shaft, the first shaft and the second shaft configured to be rotated at the same speed but in opposite rotational directions. The transmission further includes a housing and a reversing transmission coupled between the first shaft and the second shaft. the reversing transmission includes a bevel gear carrier; a first bevel gear wheel coupled to the first shaft; a second bevel gear wheel coupled to the second shaft; one or more third bevel gear wheels; each of the one or more third bevel gear wheels supported by the bevel carrier; and flexible coupling means between the housing and the bevel gear carrier. This means that movement of the bevel carrier is restricted in a torsional direction and free in radial, axial and tilt directions.
Preferably, the flexible coupling means includes a member arranged concentrically with the first shaft. Preferably, the member is coupled to the bevel gear carrier by a first crowned spline arrangement. Preferably, the member is coupled to the bevel gear carrier by a second crowned spline arrangement. Preferably, the member is flexible.
Preferably an input side of the transmission includes the first shaft and the second shaft and an output side of the transmission includes the first shaft. Also included is a wind or water turbine for generating electricity comprising such a transmission, in which a first turbine is coupled to an input side of the first shaft, a second turbine is coupled to the input side of the second shaft, and a generator is coupled to an output side of the first shaft.
Preferably an output side of the transmission includes the first shaft and the second shaft and an input side of the transmission includes the first shaft. Also included is an apparatus for propulsion comprising such a transmission, in which a first propeller is coupled to an output side of the first shaft, a second propeller is coupled to the output side of the second shaft, and an engine is coupled to an input side of the first shaft.
The present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 is a sectional view of a transmission in accordance with the present invention; Figure 2 is a front view of a transmission in accordance with the present invention; Figure 3 is a sectional view of Figure 1 along line B-B; and Figure 4 is a detail view of section C of Figure 1.
Figure 1 shows a transmission 100 that enables two concentric shafts 106,110 to be rotated at the same speed but in opposite rotational directions, and which achieves even load sharing between gear meshes.
Transmission 100 includes a first shaft 106 and a second shaft 110. First shaft 106 and second shaft 110 are coupled to a reversing mechanism 102. First shaft 106 and second shaft 110 are supported by bearings (not shown).
Reversing mechanism 102, shown in Figures ito 3, includes a first bevel gear wheel 104 and a second bevel gearwheel 108. First shaft 106 is coupled to reversing mechanism 100 via first bevel gearwheel 104. Second shaft 110 is coupled to reversing mechanism 100 via second bevel gear wheel 108. First and second bevel gears 104,108 are fixedly coupled to first and second shafts 106,110, respectively, so that they are fixed in all degrees of freedom except rotational freedom about their own axes.
Reversing mechanism 102 further includes one or more third bevel gear wheels 112 supported by corresponding pins 113 on a bevel carrier 114. The one or more third bevel gear wheels engage with first bevel gearwheel 104 and second bevel gearwheel 108. This arrangement means that, in operation, first shaft 106 and second shaft 110 rotate in opposite directions. In a preferred embodiment, three bevel gear wheels are utilised to provide best equal load sharing between gear meshes. Other numbers of bevel gear wheels are possible, but the load share will not be equal/optimum.
Transmission 100 further includes a housing or casing 122. Reversing mechanism 102 is supported by a flexible coupling means between housing 122 and bevel gear carrier 114.
The flexible coupling means is shown in more detail in Figure 4, and in the embodiment shown includes an axially elongate member 116 between housing 122 and bevel gear carrier 114. Member 116 can be flexible or rigid. In Figures 1 and 4, member 116 is shown as being coupled to both housing 122 and bevel gear carrier 114 by means of crowned spline arrangements 118,120. It is to be understood that member 116 can be coupled to housing 122 by means of crowned spline arrangement 118 and coupled fixedly to bevel gear carrier 114. It is to be further understood that member 116 can be coupled to bevel gear carrier 114 by means of crowned spline arrangement 120 and coupled fixedly to housing 122. It is to be further understood that member 116 can be coupled fixedly to both bevel gear carrier 114 and housing 122.
Spline arrangements 118,120 are shown in Figures 2 and 3 as comprising three segments each spanning 30 degrees and equally spaced around the circumference. It is to be understood that greater or fewer segments, or a complete 360 degree ring of teeth, can be utilised.
In operation, movement of bevel carrier 114 is restricted in a torsional direction but is free in radial, axial and tilt directions.
Bevel carrier 114 has five degrees of freedom and is only restrained torsionally. This means that bevel pins 113 and bevel carrier 114 are positioned by the contact points between the one or more third bevel gear wheels 112 and the first and second bevel gear wheels 104,108, and are inherently balance in terms of gear forces.
Transmission 100 can be used for applications in which the shafts 106,110 are driven, for example by wind or water turbines. For this application, a first turbine is coupled to an input side of first shaft 106, a second turbine is coupled to an input side of second shaft 110, and a generator is coupled to an output side of first shaft 106.
The term "input side" in this context means to the left hand side of Figure 1, and the term "output side" in this context means to the right hand side of Figure 1.
Transmission 100 can also be used for applications in which output sides of shafts 106,110 provide drive and input shaft 106 is driven, as for example for propulsion applications. The term "input side" in this context means to the right hand side of Figure 1, and the term "output side" in this context means to the left hand side of Figure 1.

Claims (12)

  1. Claims 1. A transmission having a first shaft and a second shaft concentric with the first shaft, the first shaft and the second shaft configured to be rotated at the same speed but in opposite rotational directions, the transmission further comprising: a housing; and a reversing transmission coupled between the first shaft and the second shaft, the reversing transmission including: a bevel gear carrier; a first bevel gear wheel coupled to the first shaft; a second bevel gearwheel coupled to the second shaft; one or more third bevel gear wheels, each of the one or more third bevel gear wheels supported by the bevel carrier; and flexible coupling means between the housing and the bevel gear carrier; wherein movement of the bevel carrier is restricted in a torsional direction and free in radial, axial and tilt directions.
  2. 2. A transmission according to claim 1, in which the one or more third bevel gear wheels comprise three third bevel gear wheels.
  3. 3. A transmission according to claim 1 or claim 2, in which the flexible coupling means includes a member arranged concentrically with the first shaft.
  4. 4. A transmission according to claim 3, in which the member is coupled to the bevel gear carrier by a first crowned spline arrangement.
  5. 5. A transmission according to claim 3 or claim 4, in which the member is coupled to the bevel gear carrier by a second crowned spline arrangement.
  6. 6. A transmission according to claim 4 or claim 5, in which the spline arrangement comprises three equally spaced segments each spanning 30 degrees.
  7. 7. A transmission according to claim 4 or claim 5, in which the spline arrangement comprises a complete 360 degree ring of teeth.
  8. 8. A transmission according to any of claims 3 to 6, in which the member is flexible.
  9. 9. A transmission according to any preceding claim in which an input side of the transmission includes the first shaft and the second shaft and in which an output side of the transmission includes the first shaft.
  10. 10. A wind or water turbine for generating electricity comprising the transmission according to claim 9, in which a first turbine is coupled to the input side of the first shaft, a second turbine is coupled to the input side of the second shaft, and a generator is coupled to the output side of the first shaft.
  11. 11. A transmission according to any of claims 1 to 8 in which an output side of the transmission includes the first shaft and the second shaft and in which an input side of the transmission includes the first shaft.
  12. 12. A contra-rotating apparatus for propulsion comprising the transmission according to claim 11, in which a first propeller is coupled to an output side of the first shaft, a second propeller is coupled to the output side of the second shaft, and an engine is coupled to an input side of the first shaft.AMENDMENT TO CLAIMS HAVE BEEN FILED ASFOLLOWSClaims 1. A transmission having a first shaft and a second shaft concentric with the first shaft, the first shaft and the second shaft configured to be rotated at the same speed but in opposite rotational directions, the transmission further comprising: a housing; and a reversing transmission coupled between the first shaft and the second shaft, the reversing transmission including: a bevel gear carrier; a first bevel gear wheel coupled to the first shaft; a second bevel gear wheel coupled to the second shaft; one or more third bevel gear wheels, each of the one or more third bevel gear wheels supported by the bevel carrier; and flexible coupling means between the housing and the bevel gear carrier; C') wherein movement of the bevel carrier is restricted in a torsional direction and *" 15 free in radial, axial and tilt directions.N-0.. . . . 2. A transmission according to claim 1, in which the one or more third bevel gear C') wheels comprise three third bevel gear wheels.3. A transmission according to claim 1 or claim 2, in which the flexible coupling means includes a member arranged concentrically with the first shaft, a first coupling and a second coupling.4. A transmission according to claim 3, in which the first coupling is a first crowned spline arrangement, and in which the member is coupled to the bevel gear carrier by the first crowned spline arrangement.5. A transmission according to claim 3 or claim 4, in which the second coupling is a second crowned spline arrangement, and in which the member is coupled to the housing by the second crowned spline arrangement.6. A transmission according to claim 4 or claim 5, in which the spline arrangement comprises three equally spaced segments each spanning 30 degrees.7. A transmission according to claim 4 or claim 5, in which the spline arrangement comprises a complete 360 degree ring of teeth.8. A transmission according to any of claims 3 to 6, in which the member is flexible.9. A transmission according to any preceding claim in which an input side of the transmission includes the first shaft and the second shaft and in which an output side of the transmission includes the first shaft.10. A wind or water turbine for generating electricity comprising the transmission according to claim 9, in which a first turbine is coupled to the input side of the first shaft, a second turbine is coupled to the input side of the second shaft, and a generator is coupled to the output side of the first shaft.11. A transmission according to any of claims 1 to 8 in which an output side of the transmission includes the first shaft and the second shaft and in which an input side of the transmission includes the first shaft.12. A contra-rotating apparatus for propulsion comprising the transmission according to claim 11, in which a first propeller is coupled to an output side of the first shaft, a second propeller is coupled to the output side of the second shaft, and an engine is coupled to an input side of the first shaft.
GB1212578.7A 2012-07-16 2012-07-16 Contra-rotating transmission Expired - Fee Related GB2504072B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1212578.7A GB2504072B (en) 2012-07-16 2012-07-16 Contra-rotating transmission
CN2012206799813U CN203114536U (en) 2012-07-16 2012-12-05 Power transmission system for wind turbine
PCT/GB2013/051891 WO2014013237A1 (en) 2012-07-16 2013-07-15 Contra-rotating transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1212578.7A GB2504072B (en) 2012-07-16 2012-07-16 Contra-rotating transmission

Publications (3)

Publication Number Publication Date
GB201212578D0 GB201212578D0 (en) 2012-08-29
GB2504072A true GB2504072A (en) 2014-01-22
GB2504072B GB2504072B (en) 2014-08-13

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ID=46799646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1212578.7A Expired - Fee Related GB2504072B (en) 2012-07-16 2012-07-16 Contra-rotating transmission

Country Status (3)

Country Link
CN (1) CN203114536U (en)
GB (1) GB2504072B (en)
WO (1) WO2014013237A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103850882A (en) * 2014-03-25 2014-06-11 上海电机学院 Wind power generation device and power generation method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2901042B1 (en) * 2012-09-28 2016-11-02 Romax Technology Limited Power gearing system for a wind turbine
ES2951132T3 (en) * 2019-10-23 2023-10-18 Vestas Wind Sys As Assembly or disassembly of a set of gears of a wind turbine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1401201A1 (en) * 1986-03-17 1988-06-07 В.И.Козаренко Screw gearing

Family Cites Families (7)

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Publication number Priority date Publication date Assignee Title
DE737886C (en) * 1939-11-15 1943-07-28 Wilhelm Stoeckicht Dipl Ing Helical planetary gear
GB696653A (en) * 1949-12-16 1953-09-02 Lucien Romani Improvements in or relating to torque governors for a windmill
DE2558093A1 (en) * 1975-12-19 1977-06-23 Mannesmann Ag PLANETARY GEAR
GB2136084B (en) * 1983-03-01 1986-03-12 Northern Eng Ind Toothed gearing
KR960007401B1 (en) * 1994-06-27 1996-05-31 신찬 Multi-unit rotor blade system integrated wind turbine
US8264096B2 (en) * 2009-03-05 2012-09-11 Tarfin Micu Drive system for use with flowing fluids having gears to support counter-rotative turbines
KR101205329B1 (en) * 2010-06-11 2012-11-28 신익 Wind Power Generator Having Triple Rotors Integrated System

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1401201A1 (en) * 1986-03-17 1988-06-07 В.И.Козаренко Screw gearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103850882A (en) * 2014-03-25 2014-06-11 上海电机学院 Wind power generation device and power generation method thereof
CN103850882B (en) * 2014-03-25 2016-04-20 上海电机学院 A kind of wind generating unit and electricity-generating method thereof

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Publication number Publication date
WO2014013237A1 (en) 2014-01-23
GB201212578D0 (en) 2012-08-29
CN203114536U (en) 2013-08-07
GB2504072B (en) 2014-08-13

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20230716