Plural Elements Selectively Braked Patents (Class 475/271)
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Publication number: 20120065019Abstract: A transmission is has an input member, an output member, a first planetary gear set assembly, a second planetary gear set assembly, a plurality of coupling members and a plurality of torque transmitting devices. The second planetary gear set assembly is a stacked planetary gear set having a first, a second, a third, a fourth and a fifth member and the first planetary gear set assembly has a first, a second, a third and a fourth member. The torque transmitting devices include clutches and brakes.Type: ApplicationFiled: September 13, 2010Publication date: March 15, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: James M. Hart, Scott H. Wittkopp, James B. Borgerson
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Publication number: 20120053003Abstract: A gear train of an automatic transmission for a vehicle may include first and second planetary gear sets arranged on a first shaft, a third planetary gear set arranged on a second shaft, which may be parallel to the first shaft and connected to the first and second planetary gear sets through first and second transfer gears, and a plurality of friction members, and the gear train of an automatic transmission for a vehicle realizes eighth forward speeds and one reverse speeds.Type: ApplicationFiled: November 30, 2010Publication date: March 1, 2012Applicant: Hyundai Motor CompanyInventor: Seong Wook HWANG
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Patent number: 8105199Abstract: A power transmission mechanism transferring a power output from an engine to a propeller includes a transmission planetary gear train that transforms the output power of the engine before it is transferred to the propeller. The transmission planetary gear train includes a transmission sun gear, a transmission double planetary gear set, and a transmission internal gear, in which the transmission sun gear is connected via the first clutch to the input end shaft extending into the engine, and the transmission sun gear is also connected via the second one-way clutch to the housing. In addition, the transmission double planetary gear set is connected via the second clutch to the input end shaft extending into the engine, and the transmission double planetary gear set is also connected via the first one-way clutch to the housing. Further, the transmission internal gear is connected to the output end shaft extending toward the propeller.Type: GrantFiled: March 14, 2008Date of Patent: January 31, 2012Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Yoshihiko Okabe
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Publication number: 20120015776Abstract: A gearbox has a first rotative component and a second rotative component, the gearbox having a rotary input and a rotary output, a first brake for braking the first rotative component of the gearbox against rotation thereof, and a second brake for braking the second rotative component of the gearbox against rotation thereof. The rotary input drives the rotary output if the first brake brakes the first rotative component of the gearbox and the rotary output drives the first component of the gearbox if the second brake brakes the second rotative component of the gearbox.Type: ApplicationFiled: July 14, 2010Publication date: January 19, 2012Inventor: Glenn C. Lemmers, JR.
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Publication number: 20120004068Abstract: Various aspects of the present invention are directed to provide a gear train of an automatic transmission for vehicles having advantages of simplifying structures of the automatic transmission and improving power delivery performance and fuel economy as a consequence of realizing at least eight forward speeds and one reverse speed by combining two simple planetary gear sets and a double sun gear planetary gear set having two sun gears and a center member disposed between the sun gears and connected to a planet carrier with four clutches and two brakes.Type: ApplicationFiled: December 1, 2010Publication date: January 5, 2012Applicant: Hyundai Motor CompanyInventors: Jongsool Park, Hyukjun Lee
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Publication number: 20110312462Abstract: A transmission for a hybrid electric vehicle, may include an input element where rotation power may be inputted and an output element from which the rotation power may be outputted, a first motor generator and a second motor generator, a first planetary gear set that may be a multiple planetary gear set having at least four or more rotary elements with which the input element, the output element, and the first motor generator may be connected, a second planetary gear set with which the output element and the second motor generator may be connected, and a first clutch and a second clutch.Type: ApplicationFiled: June 15, 2011Publication date: December 22, 2011Applicant: Hyundai Motor CompanyInventor: Jongsool Park
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Patent number: 8075440Abstract: The present invention relates to a power train of an automatic transmission that realizes eight forward speeds and one reverse speed by using two double pinion planetary gear sets, one single pinion planetary gear set, four clutches, and two brakes wherein the friction members are selectively connected to the operating members of the pinion planetary gear sets to the input shaft, other operating members, or the transmission case.Type: GrantFiled: May 7, 2009Date of Patent: December 13, 2011Assignee: Hyundai Motor CompanyInventors: Wookjin Jang, Ho Rim Yang
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Patent number: 8066608Abstract: An automatic transmission includes a case; a speed change mechanism; a torque converter having a lock-up clutch axially arranged and freely slidably toward and away from the input shaft; a thrust bearing interposed between the flange unit and the side face of the sleeve unit on the input shaft side; a ball bearing that includes an outer race, a side face of which contacts the first step portion toward the input shaft side, and a propeller shaft connecting member capable of connecting with a propeller shaft, spline-engaging with the outer periphery of the output shaft, and contacting a side face of an inner race of the ball bearing upon being pressed axially toward the input shaft side by the propeller shaft.Type: GrantFiled: November 8, 2006Date of Patent: November 29, 2011Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Nobutada Sugiura, Minoru Todo, Mikio Iwase, Takuya Ishii, Tomohiro Katada, Hirofumi Ota, Kazutoshi Nozaki, Atsushi Honda
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Publication number: 20110287884Abstract: A parking mechanism of a transmission with a planetary gear mechanism for speed changing and outputting the rotation of a driving force source, includes a plurality of friction elements which change a speed ratio of the planetary gear mechanism by being engaged or released; and an engaging unit which engages the friction elements. The engaging unit maintains at least two interlock friction elements, which are engaged to interlock the transmission, out of the plurality of friction elements in engaged states when the operation of the driving force source stops due to a key-off operation.Type: ApplicationFiled: May 16, 2011Publication date: November 24, 2011Inventors: Takehiro UNNO, Koji Idebuchi, Katsuya Kobayashi, Yusuke Nakano
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Publication number: 20110263376Abstract: The 8-gear transmission comprises an input shaft (AN), an output shaft (AB), four planetary gearsets (RS1, RS2, RS3, RS4), eight rotary shafts (1, 2, 3, 4, 5, 6, 7, 8), and five shifting elements (A, B, C, D, E). A carrier (ST4) of the fourth gearset (RS4) and the input shaft (AN) are connected to each other as the first shaft (1). A carrier (ST4) of the fourth gearset (RS4) and the input shaft (AN) are connected to each other as the first shaft (1). A carrier (ST3) of the third gearset (RS3) and the output shaft (AB) are connected to each other as the second shaft (2). A sun gear (SO1) of the first gearset (RS1) and a sun gear (SO4) of the fourth gearset (RS4) are permanently connected to each other as the third shaft (3). A ring gear (HO1) of the first gearset (RS1) forms the fourth shaft (4). A carrier (ST2) of the second gearset (RS2) and a sun gear (SO3) of the third gearset (RS3) are connected to each other as the fifth shaft (5).Type: ApplicationFiled: July 11, 2011Publication date: October 27, 2011Applicant: ZF FRIEDRICHSHAFEN AGInventors: Michael KAMM, Gabor DIOSI, Josef HAUPT, Gerhard GUMPOLTSBERGER, Peter ZIEMER, Martin BREHMER
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Publication number: 20110251013Abstract: A transmission is has an input member, an output member, two planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. One of the planetary gear sets includes a first, second, third and fourth member and the other of the planetary gear sets includes a first, second and third member. The torque transmitting devices include clutches and brakes.Type: ApplicationFiled: April 9, 2010Publication date: October 13, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Andrew W. Phillips
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Publication number: 20110245016Abstract: An automatic transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may be either clutches or brakes. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member.Type: ApplicationFiled: June 13, 2011Publication date: October 6, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Scott H. Wittkopp, James M. Hart, Andrew W. Phillips, Clinton E. Carey
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Publication number: 20110245015Abstract: An automatic toothed variable-speed gearbox is provided, comprising two or more stages of planetary mechanisms, wherein each stage of planetary mechanisms comprises sun gears, a carrier gear and planetary gears, which can be optionally bilateral. The planetary mechanisms comprise two or more power-transfer flows.Type: ApplicationFiled: December 1, 2008Publication date: October 6, 2011Inventor: Sergey A. Vedeneev
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Publication number: 20110245013Abstract: A gear train of an automatic transmission realizes at least ten forward speeds and one reverse speed by combining four simple planetary gear sets with four clutches and two brakes. In addition, three friction elements are operated at each shift-speed. Therefore, the gear train has advantages of simplifying structures of the automatic transmission and improving power delivery performance and fuel economy.Type: ApplicationFiled: October 28, 2010Publication date: October 6, 2011Applicant: Hyundai Motor CompanyInventor: Woo-Yeol Kim
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Publication number: 20110245014Abstract: A transmission includes an input member, an output member, an intermediate member, and a simple planetary gear set, all of which are coaxial. A first and a second layshaft are arranged to define a second axis of rotation and a third axis of rotation, respectively. Five sets of intermeshing gears are provided, some of which are arranged to transfer torque from the input member to the layshafts, and others of which are arranged to transfer torque from the layshafts to one of the intermediate member and the simple planetary gear set. Seven torque-transmitting mechanisms are each selectively engagable to connect a different respective gear of the sets of intermeshing gears to a respective one of the layshafts or to a stationary member. The torque-transmitting mechanisms are engagable in different combinations to establish multiple forward speed ratios and a reverse speed ratio between the input member and the output member.Type: ApplicationFiled: November 29, 2010Publication date: October 6, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Alexander Filippovich Kraynev, Vladimir Konstantinovich Astashev, Konstantin Borisovich Salamandra, Madhusudan Raghavan
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Patent number: 8029403Abstract: A multi-speed transmission for a vehicle is provided with a selectable one-way braking clutch (SOWBC). The transmission has an input member connected for common rotation with one of the members of four planetary gear sets and an output member connected for common rotation with another of the members of the planetary gear sets. Four interconnecting members connect different members of the planetary gear sets for common rotation. A first brake is selectively engagable to ground the first member of the first planetary gear set to the stationary member. A first, a second, and a third rotating clutch are each selectively engagable to connect a different respective pair of the members of the planetary gear sets for common rotation. A selectable one-way braking clutch is configured to brake in one rotational direction and is selectively reversible to brake in an opposite rotational direction, and freewheels in some speed ratios.Type: GrantFiled: March 16, 2009Date of Patent: October 4, 2011Assignee: GM Global Technology Operations LLCInventors: Chunhao J. Lee, Farzad Samie, Chi-Kuan Kao
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Publication number: 20110230302Abstract: A transmission includes an input member, an output member, an intermediate shaft, and a simple planetary gear set, all of which are coaxial. A first and a second layshaft are arranged to define a second axis of rotation and a third axis of rotation, respectively. The transmission has five sets of intermeshing gears, some of which are arranged to transfer torque from the input member to the layshafts, and others of which are arranged to transfer torque from the layshafts to the intermediate member or the simple planetary gear set. The transmission has eight torque-transmitting mechanisms, including one torque-transmitting mechanism that is selectively engagable to connect the input member for common rotation with the intermediate member. The other seven torque-transmitting mechanisms are each selectively engagable to connect a different respective gear of the sets of intermeshing gears to a respective one of the layshafts or to a stationary member.Type: ApplicationFiled: November 29, 2010Publication date: September 22, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Alexander Filippovich Kraynev, Vladimir Konstantinovich Astashev, Konstantin Borisovich Salamandra, Madhusudan Raghavan
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Publication number: 20110218074Abstract: A multi-speed transmission includes an input member, an output member, a stationary member, and a first and a second compound planetary gear set. The first compound planetary gear set has a first, a second, a third, a fourth, and a fifth member. The second compound planetary gear set has a first, a second, a third, and a fourth member. The first member of the second compound planetary gear set is continuously connected for common rotation with the output member. An interconnecting member continuously connects the first member of the first compound planetary gear set for common rotation with the second member of the second compound planetary gear set. The transmission has seven torque-transmitting mechanisms, including three brakes and four rotating-type clutches, that are engagable to establish up to fourteen forward speed ratios between the input member and the output member.Type: ApplicationFiled: November 29, 2010Publication date: September 8, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Alexander Filippovich Kraynev, Vladimir Konstantinovich Astashev, Konstantin Borisovich Salamandra, Madhusudan Raghavan
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Patent number: 8007392Abstract: A second clutch (C2) which couples a carrier (Cr) of the compound planetary gear set (6) to a speed ring gear (Rf) of the single planetary gear set (5) is arranged between the single planetary gear set (5) and the compound planetary gear set (6). Then, a first clutch (C1) which couples a second sun gear (Sr2) of the compound planetary gear set (6) to a carrier (Cf) of the single planetary gear set (5), and a third clutch (C3) which couples a sun gear (Sr1) of the compound planetary gear set (6) to carrier (Cf) of the single planetary gear set (5) are arranged at the side of the compound planetary gear set (6) opposite to the single planetary gear set (5).Type: GrantFiled: January 28, 2009Date of Patent: August 30, 2011Assignee: Honda Motor Co., Ltd.Inventors: Soichi Sugino, Yoshinori Tanaka, Takuya Kurokawa, Junya Tachikawa
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Publication number: 20110207573Abstract: A multi-speed transmission is provided that includes an input member, an output member, a stationary member, a first and a second compound planetary gear set. The first compound planetary gear set has a first, second, third, fourth, and fifth member. The second compound planetary gear set has a first, second, third, and fourth member. The first member of the second compound planetary gear set is continuously connected for common rotation with the output member. The second member of the second compound planetary gear set is continuously grounded to the stationary member. None of the members of the first compound planetary gear set are continuously connected for common rotation with any of the members of the second compound planetary gear set. Seven torque-transmitting mechanisms are selectively engagable in combinations of three to establish up to ten forward speed ratios between the input member and the output member.Type: ApplicationFiled: November 29, 2010Publication date: August 25, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Alexander Filippovich Kraynev, Vladimir Konstantinovich Astashev, Konstantin Borisovich Salamandra, Madhusudan Raghavan
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Patent number: 7988587Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes.Type: GrantFiled: January 9, 2009Date of Patent: August 2, 2011Assignee: GM Global Technology Operations LLCInventors: James M. Hart, Scott H. Wittkopp, Clinton E. Carey, Andrew W. Phillips
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Publication number: 20110177908Abstract: A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio.Type: ApplicationFiled: January 15, 2010Publication date: July 21, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott H. Wittkopp, Andrew W. Phillips, Clinton E. Carey, James M. Hart
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Publication number: 20110177909Abstract: A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio.Type: ApplicationFiled: January 15, 2010Publication date: July 21, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, Clinton E. Carey
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Publication number: 20110177911Abstract: A planetary gear mechanism for a bicycle, and more particularly to a planetary gear mechanism comprising a first planetary mechanism connected coaxially in series to a second planetary mechanism, which second planetary mechanism is connected coaxially in series to a third planetary mechanism, the second planetary mechanism output is a step up in speed from the first planetary mechanism output, the third planetary mechanism output is a step up in speed from the second planetary mechanism output.Type: ApplicationFiled: January 20, 2010Publication date: July 21, 2011Inventors: Alexander Serkh, Dean Schneider
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Publication number: 20110152029Abstract: A power tool that includes a housing, a motor, a planetary transmission, a first bearing and a second bearing. The motor is disposed in the housing and includes an output shaft. The planetary transmission has a sun gear, a plurality of first planet gears, a first ring gear and a carrier. The sun gear is driven by the output shaft. The first planet gears are driven by the sun gear and have teeth that are meshingly engaged to teeth of the first ring gear. The carrier includes a rear carrier plate and a front carrier plate between which the first and second planet gears are received. The rear carrier plate includes a first bearing aperture. The first bearing is received in the first bearing aperture and is configured to support the output shaft. The second bearing is received onto the rear carrier plate to support the carrier relative to the housing.Type: ApplicationFiled: December 17, 2010Publication date: June 23, 2011Inventors: Scott Rudolph, Sankarshan Murthy, Daniel Puzio, Qiang Zhang, Aris Cleanthous, Mehdi Abolhassani, Ren H. Wang
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Publication number: 20110136615Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.Type: ApplicationFiled: February 14, 2011Publication date: June 9, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: ANDREW W. PHILLIPS, JEFFREY KENNETH BARAN, CLINTON E. CAREY, SCOTT H. WITTKOPP, JAMES M. HART
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Publication number: 20110124462Abstract: A multi-speed transmission may include an input member and an output member disposed in a housing. A first planetary gear set, a second planetary gear set, a third planetary gear set, and a fourth planetary gear set may also be disposed in the housing, each planetary gear set including a sun gear, a planet carrier, and a ring gear. Six control elements may be operably coupled to the planetary gear sets and selectively engageable to create a set of different gear ratios between the input member and the output member, the set of different gear ratios including at least nine forward gear ratios and at least two reverse gear ratios.Type: ApplicationFiled: October 29, 2010Publication date: May 26, 2011Applicant: CATERPILLAR, INC.Inventors: Kevin Gerard Meyer, James Stephen Rice, Peter Hall Hodges, Larry Wayne Carpenter, Kevin Jay Knox
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Publication number: 20110111914Abstract: A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio.Type: ApplicationFiled: November 6, 2009Publication date: May 12, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Andrew W. Phillips, Scott H. Wittkopp, Clinton E. Carey, James M. Hart
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Publication number: 20110111915Abstract: A transmission of the present invention has an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio.Type: ApplicationFiled: November 6, 2009Publication date: May 12, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: James M. Hart, Scott H. Wittkopp, Clinton E. Carey, Andrew W. Phillips
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Publication number: 20110045936Abstract: A multi step transmission with comprising gear sets (P1, P2, P3, P4), eight shafts and shift elements. The sun gear of set (P1) couples the drive shaft. The carrier of set (P1) couples shaft (3) which can couple the housing via brake (03), the drive shaft and shaft (5) via respective clutches. Shaft (5) couples the ring gear of set (P2), the sun gears of sets (P3, P4), and the drive shaft couples, via the clutch (17), shaft (7) connected to the carrier of set (P4). Shaft (6) couples the ring gear of set (P1) and the carrier of set (P2). Sun gear of set (P2) couples shaft (4), which couples housing via brake (04). Ring gear of set (P3) couples the housing. The output shaft couples the ring gear of set (P4) and, via clutch (28), shaft (8), which couples the carrier of set (P3).Type: ApplicationFiled: August 19, 2010Publication date: February 24, 2011Applicant: ZF FRIEDRICHSHAFEN AGInventors: Gerhard GUMPOLTSBERGER, Christian SIBLA, Stefan BECK, Josef HAUPT, Gert BAUKNECHT, Peter ZIEMER
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Publication number: 20110034293Abstract: A transmission includes an input shaft (IP), an output shaft (OP), a single planetary gearset (SP), a compound planetary gearset (CP), shifting elements. The single planetary gearset is arranged before the compound planetary gearset, and the shifting elements comprise at least two brakes (B1,B2), the first clutch (C1), the second clutch (C2), the third clutch (C3), and all the shifting elements are positioned between the single planetary gearset and the compound planetary gearset, which has compact arrangements, and can reduce the power transmission length. The transmission also includes an one-way clutch (OWC) acted on the compound planetary gearset.Type: ApplicationFiled: December 4, 2008Publication date: February 10, 2011Applicant: CHERY AUTOMOBILE CO., LTD.Inventors: Jiafeng Yang, Bill Lakis, Andrew Nowacki, Sarah Wykes, Chris Reis, John Stokes, Frank Bauer, Jian Lin
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Publication number: 20110015028Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and brakes.Type: ApplicationFiled: June 22, 2010Publication date: January 20, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Andrew W. Phillips
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Publication number: 20100311534Abstract: Provided is an automatic transmission capable of reducing friction loss. A first element (Sa) is coupled with an input shaft (2), a second element Ca is coupled with a first driving gear (G1a). A first driven gear (G1b) is pivotally supported on an output shaft (3), a seventh element (Rc) is coupled with a second driving gear (G2a), and a second driven gear (G2b) is fixed to the output shaft (3). A third element (Ra) and a fifth element (Cb) are coupled to form a first coupling body, a sixth element (Rb) and a ninth element (Sc) are coupled to form a second coupling body.Type: ApplicationFiled: April 30, 2010Publication date: December 9, 2010Applicant: HONDA MOTOR CO., LTD.Inventor: Soichi SUGINO
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Publication number: 20100298085Abstract: An output side transfer member 103 of a second clutch C-2 extends around the outer circumferences of the output side transfer members 101, 102 of the third and first clutches C-3, C-1, the output side transfer member 104 (or 13, 101) of a fourth clutch C-4 and the output side transfer member 101 of a third clutch C-3 are linked to a sun gear S2, the output side transfer member 104 (or 13, 101) of a fourth clutch C-4, an output side transfer member 101 of a third clutch C-3, and a sun gear S2, which rotate integrally, are disposed radially inward with respect to the output side transfer member 102 of the first clutch C-1. Thereby, it becomes possible to reduce the diameter of the output side transfer member 104 (or 13, 101) of the fourth clutch C-4, to reduce the weight and inertia, and to improve the controllability of the automatic transmission 1.Type: ApplicationFiled: July 8, 2010Publication date: November 25, 2010Applicant: AISIN AW CO., LTD.Inventors: Toshihiko Aoki, Minoru Todo, Kazuhisa Ozaki, Takuya Ishii, Satoshi Fukuyama, Tomochika Inagaki, Yousuke Andoh
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Publication number: 20100298084Abstract: A sequential planetary stack transmission system is provided. The system includes a stack of planetary gear sets, each gear set including a sun gear engageable with a rotatable central shaft, and freely rotatable concentrically about the central input or output shaft when not engaged with the central shaft. A plurality of planet gears engage with the sun gear, and a ring gear engages with the planet gears. The ring gears form a ring gear barrel rotatable as a unit concentrically with respect to the central shaft. A shifting assembly within the hollow central shaft engages sequentially with the sun gears to provide a desired gear ratio. The planetary stack assembly and the shifting assembly are disposed within a case. The system is suitable for a variety of applications, and is particularly suitable for bicycles.Type: ApplicationFiled: December 3, 2008Publication date: November 25, 2010Applicant: NORTHEASTERN UNIVERSITYInventors: Michael Witonis, Jay Seiter, Morgan Misek, Joshua Filgate, Jesse Kuhn
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Patent number: 7824304Abstract: A transmission is disclosed having an input member, an output member, first, second and third planetary gear sets, a first interconnecting member, a second interconnecting member and six torque-transmitting mechanisms. The torque-transmitting mechanisms are selectively engageable in combinations of at least three to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member. The planetary gear sets each have first, second and third members. The six torque-transmitting mechanisms are selectively engageable to interconnect one of the first, second, and third members with another of the first, second, and third members.Type: GrantFiled: October 17, 2007Date of Patent: November 2, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Andrew W. Phillips, Craig S. Ross, Scott H. Wittkopp, James M. Hart, Clinton E. Carey
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Publication number: 20100273599Abstract: A transmission is connectable to an input member and has an output member, first and second shafts, first and second countershafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.Type: ApplicationFiled: March 12, 2010Publication date: October 28, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Craig S. Ross, Scott H. Wittkopp, Edward W. Mellet
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Publication number: 20100267515Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and brakes arranged within a transmission housing.Type: ApplicationFiled: June 29, 2010Publication date: October 21, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Clinton E. Carey, James M. Hart, Scott H. Wittkopp, Andrew W. Phillips, Edwin T. Grochowski, Elizabeth I. Wooden
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Publication number: 20100255949Abstract: A transmission includes an input member, an output member, first and second shafts, first and second countershafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.Type: ApplicationFiled: March 5, 2010Publication date: October 7, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: EDWARD W. MELLET, SCOTT H. WITTKOPP, CRAIG S. ROSS
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Publication number: 20100255950Abstract: A transmission is connectable to an input member and includes an output member, first and second shafts, first and second countershafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member.Type: ApplicationFiled: March 10, 2010Publication date: October 7, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Edward W. Mellet, Craig S. Ross, Scott H. Wittkopp
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Publication number: 20100234164Abstract: An automatic transmission is provided that has appropriately spaced gear ratios for eight forward speeds to be capable of obtaining a shift feeling in all of the eight speeds, and that can be reduced in size and weight. In the automatic transmission that transmits rotation of an input shaft to an output shaft at a speed selected from a plurality of shift speeds by first and second clutches selectively transmitting the rotation of the input shaft to first and second compound planetary gears, and by first to fourth brakes selectively fixing each element of the first and second compound planetary gears, the first compound planetary gear includes first and second sun gears, a common carrier rotatably supporting a long pinion and a pinion, and a common ring gear that meshes with the first sun gear through the long pinion or the pinion and also meshes with the second sun gear through the long pinion and the pinion.Type: ApplicationFiled: March 29, 2007Publication date: September 16, 2010Applicants: Aisin AW Co., Ltd, Toyota Jidosha Kabushiki KaishaInventors: Takaaki Kato, Tsuyoshi Fukaya, Akihito Hongoya, Hiroyuki Tsukamoto, Masafumi Kinoshita, Masaru Morise
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Publication number: 20100234165Abstract: The invention discloses a mechanical torque converter (100) having a casing (6), an input shaft (2) entering casing (6) and rotatable within the casing (6). An output shaft (5) exits casing (6) and is rotatable within casing (6). A gearbox (1) is located within casing (6) and coupled to input shaft (2). An escapement device (3) is within casing (6) and coupled to gearbox (1) to brake gearbox (1) under low speed and a clutch (4) co-operates with output shaft (5) and gearbox (1 ).Type: ApplicationFiled: September 26, 2007Publication date: September 16, 2010Inventors: Hu Meng Bu, Xiao Ling Bu
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Publication number: 20100204001Abstract: A power split transmission for a working machine, such as a wheel loader, having a continuously variable power branch and a mechanical power branch that are summed with one another via a summing gear (13). The summing gear (13) can be connected, via a clutch for forward drive (4) and a clutch for reverse drive (8), to an input drive. The power split transmission has shafts (2, 7; 32, 33) and only a single clutch is located on each shaft.Type: ApplicationFiled: August 15, 2008Publication date: August 12, 2010Applicant: ZF Friedrichshafen AGInventor: Jurgen Legner
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Publication number: 20100184554Abstract: A planetary gear type gearbox includes a front-stage transmission section and rear-stage transmission section. The front-stage transmission section is for transmitting power from an input shaft to an intermediate shaft. The front-stage transmission section includes first, second and third clutches, two sets of planetary gear trains axially adjoining to each other. The first planetary gear train includes a sun gear, a carrier, a ring gear and planet gears. The second planetary gear train includes a sun gear, a carrier, a ring gear and two sets of planet gears. In the activation of second and third clutches, power is inputted into the carrier from the input shaft and is then outputted from the ring gear of the first planetary gear train.Type: ApplicationFiled: August 27, 2008Publication date: July 22, 2010Applicant: KOMATSU LTD.Inventor: Masaki Shiohara
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Publication number: 20100167866Abstract: An automatic transmission in which first to third clutches which can couple an input shaft to a first element of a first multiple planetary gear set and second and fourth elements of the second multiple planetary gear set, respectively, are arranged on a front side of the first multiple planetary gear set. Thus, it is possible to prevent a situation in which disengaging of the third clutch in the first speed causes the fourth element of the first multiple planetary gear set to rotate in reverse and generate a large relative rotation with the first element.Type: ApplicationFiled: March 29, 2007Publication date: July 1, 2010Applicant: AISIN AW Co., Ltd.Inventors: Takaaki Kato, Tsuyoshi Fukaya, Akihito Hongoya, Hiroyuki Tsukamoto, Masafumi Kinoshita, Masaru Morise
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Publication number: 20100127229Abstract: A drawworks (10) comprising a permanent magnet motor (60) mounted inside a drum(40), said permanent magnet motor arranged to drive said drum via a gear system(50), characterised in that said gear system is located at least partially within said drum.Type: ApplicationFiled: April 24, 2008Publication date: May 27, 2010Inventors: Hege Kverneland, Åge Kyllingstad, Magne Mathias Moe, Robert Lewis Bloom
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Patent number: 7699741Abstract: A transmission is disclosed having an input member, an output member, a plurality of planetary gear sets, a plurality of interconnecting members and a plurality of torque-transmitting mechanisms. The plurality of planetary gear sets has first, second and third members. The input member is continuously interconnected with a member of the planetary gear sets. The output member is continuously interconnected with another member of the planetary gear sets. At least eight forward speeds and one reverse speed are produced by the selective engagement of the five torque-transmitting mechanisms.Type: GrantFiled: March 21, 2007Date of Patent: April 20, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James M. Hart, James B. Borgerson, Scott H. Wittkopp, Andrew W. Phillips, Clinton E. Carey, Madhusudan Raghavan
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Publication number: 20100062893Abstract: The invention relates to a compact multiple-ratio transmission device. According to the invention, three planetary gearsets (TP1, TP2, TP3) use selective coupling means (B1, B2, B3, BR, C4, C5, C6) each to supply a local direct drive and at least one other transmission ratio. Said planetary gearsets belong to three different power paths (8a, 8b and 8c) between an upstream rotary member (2) and a downstream rotary member (4). Upstream gear transfer elements (TR1, TR2) are operably mounted between the upstream rotary member (2) and two “downstream” planetary gearsets (TP1, TP2). A downstream gear transfer element (TR3) is operably mounted between the third “upstream” planetary gearset (TP3) and the downstream rotary member (4). The upstream planetary gearset (TP3) is mounted about the axis (A2) of the upstream rotary member (2).Type: ApplicationFiled: September 7, 2007Publication date: March 11, 2010Inventor: Roumen Antonov
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Publication number: 20100048343Abstract: A transmission having forward and reverse gears includes gearsets (P1, P2, P3), shafts (1-6), and six shifting elements (03, 04, 13, 14, 15, 35, 36, 46). Shaft (1) forms the input and sun gear of gearset (P2). Shaft (2) forms the output and ring gear of gearset (P3). Shaft (3) forms the ring gear of gearset (P2), and shaft (4) forms the carrier of gearset (P3). Shaft (5) forms the ring gear of gearset (P1), carrier of gearset (P2), and sun gear of gearset (P3). Shaft (6) forms the carrier of gear set (P1). The sun gear of gearset (P1) is fixed to a housing. Shafts (3, 4) are connected by brakes (03, 04) to the housing. Clutches (14, 36, 46) respectively couple shafts (1, 4), shafts (3, 6), and shafts (4, 6), and clutch (35, 13, 15) couples shafts (3, 5), shafts (1, 3), or shafts (1, 5).Type: ApplicationFiled: December 6, 2007Publication date: February 25, 2010Applicant: ZF FRIEDRICHSHAFEN AGInventors: Ralf Boss, Gerhard Gumpoltsberger, Hans-Peter Freudenreich
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Publication number: 20100035718Abstract: An automatic transmission excelling in transmission efficiency than the prior art is provided. The automatic transmission is equipped with an input shaft 2 and an output shaft 3 and a plurality of planetary gear mechanisms 5, 6. Any one element Sa of a plurality of the planetary gear mechanisms 5, 6 is coupled to the input shaft 2. One element Ca is coupled to the output shaft 3 via the first gear row G1. One element Rb is connected to the output shaft 3 via a second gear row G2 having a gear ratio different from that of the first gear row G1. Five or more engagement mechanisms C1 through C3, B1, B2 for coupling each element Ra and Cb, each element Sb, Cb with the input shaft 2, and each element Sb, Cb with the transmission case 1 releasably.Type: ApplicationFiled: August 5, 2009Publication date: February 11, 2010Applicant: HONDA MOTOR CO., LTD.Inventor: Noriaki Saitoh