Including One-way Clutch Or Brake Patents (Class 475/292)
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Patent number: 8992375Abstract: The invention relates to a drive pawl within a bicycle transmission, wherein at least one torque transmission path extends from an input side to an output side across the same, and that has allocated thereto, relative to a first component supporting said pawl, a rotatable ring part, which interacts with the pawl for the alternate activation and deactivation of the pawl.Type: GrantFiled: January 21, 2013Date of Patent: March 31, 2015Assignee: SRAM, LLCInventors: Joachim Göbel, Wolfram Frank
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Patent number: 8886423Abstract: A vehicle includes an engine, an engine control module (ECM), and a transmission assembly. The transmission assembly includes a transmission control module (TCM), a stationary member, gear sets, an input member connected to the engine and one of the gear sets, and a binary clutch assembly. The binary clutch assembly has a freewheeling element and a binary device preventing rotation of the binary clutch assembly when applied, and allows the binary clutch assembly to freewheel when released. The TCM controls a slip speed differential of the binary clutch assembly when the vehicle is coasting in a forward gear state. The TCM determines a threshold maximum slip speed differential, calculates a required engine speed for achieving no more than the threshold maximum, and transmits the required engine speed to the ECM to maintain engine speed at or above the required engine speed. Doing so enables transmission state and direction change flexibility.Type: GrantFiled: September 20, 2013Date of Patent: November 11, 2014Assignee: GM Global Technology Operations LLCInventors: Randall B. Dlugoss, Matthew Pruski, Dara Monajemi
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Patent number: 8834313Abstract: A family of transmissions has four planetary gear sets, five controllable clutches and brake, and a passive one way brake. Selective engagement of the brakes and clutches in combinations of three produces eight forward speed ratios and one reverse speed ratio. The passive one way brake is engaged in the first forward speed ratio and overruns in the second through fifth forward speed ratios.Type: GrantFiled: September 14, 2012Date of Patent: September 16, 2014Assignee: Ford Global Technologies, LLCInventors: Gregory Daniel Goleski, Steven Gerald Thomas, Reid Alan Baldwin
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Patent number: 8784258Abstract: A multiple speed power transmission comprises: an epicyclic gearing assembly comprising first, second, third, and fourth rotating members with linearly related speeds; a double pinion planetary gear set with grounded carrier and input driven sun gear; two brakes; four clutches; and specified interconnections. The brakes and clutches are operated in combinations of two to produce eight forward speed ratios and at least one reverse speed ratio.Type: GrantFiled: December 1, 2010Date of Patent: July 22, 2014Assignee: Ford Global Technologies, LLCInventors: Donald Edward Hoffman, David Allen Janson
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Patent number: 8702555Abstract: A transmission is provided having an input member, an output member, a plurality of planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. One of the plurality of torque transmitting devices is an integrated friction launch clutch. A one-way clutch is in series relationship with the launch clutch and is configured to disconnect the launch clutch from at least one of the plurality of planetary gear sets. The torque transmitting devices include clutches and brakes actuatable in combinations of two to establish at least ten forward gear ratios and one reverse gear ratio.Type: GrantFiled: March 1, 2013Date of Patent: April 22, 2014Assignee: GM Global Technology Operations LLCInventors: James M. Hart, Daryl A. Wilton, James B. Borgerson
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Publication number: 20140080657Abstract: A family of transmissions has four planetary gear sets, five controllable clutches and brake, and a passive one way brake. Selective engagement of the brakes and clutches in combinations of three produces eight forward speed ratios and one reverse speed ratio. The passive one way brake is engaged in the first forward speed ratio and overruns in the second through fifth forward speed ratios.Type: ApplicationFiled: September 14, 2012Publication date: March 20, 2014Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Gregory Daniel Goleski, Steven Gerald Thomas, Reid Alan Baldwin
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Patent number: 8647228Abstract: A gear train of an automatic transmission for vehicles has the advantages of simplifying structures of the automatic transmission and improving power delivery performance and fuel economy as a consequence of realizing at least nine forward speeds and one reverse speed by combining three simple planetary gear sets with four clutches and three brakes.Type: GrantFiled: June 30, 2011Date of Patent: February 11, 2014Assignee: Hyundai Motor CompanyInventor: Hyu Tae Shim
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Publication number: 20130190128Abstract: The invention relates to a drive pawl within a bicycle transmission, wherein at least one torque transmission path extends from an input side to an output side across the same, and that has allocated thereto, relative to a first component supporting said pawl, a rotatable ring part, which interacts with the pawl for the alternate activation and deactivation of the pawl.Type: ApplicationFiled: January 21, 2013Publication date: July 25, 2013Applicant: SRAM Deutschland GmbHInventor: SRAM Deutschland GmbH
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Patent number: 8439792Abstract: 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: GrantFiled: March 5, 2010Date of Patent: May 14, 2013Assignee: The Gates CorporationInventors: Alexander Serkh, Dean Schneider
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Patent number: 8337356Abstract: A system and method for altering the axial thrust load path within an automobile transmission eliminates the component end play in the transmission's roller clutch inner race and induces component end play in the transmission's rear sun gear. The resulting configuration moves portions of the axial thrust load path to across the roller clutch inner race and away from at least the transmission's sun gear and the reaction shell splines of the reaction shell. The system may include a kit in which an axially shortened roller clutch inner race and an appropriately sized bearing are provided. Additional kit components may include an axially shortened reaction shell. Alternatively, the roller clutch inner race and/or reaction shell may be shortened manually. A method of altering a preexisting transmission to have a new axial thrust load path is also provided.Type: GrantFiled: April 7, 2010Date of Patent: December 25, 2012Assignee: Sonnax Industries, Inc.Inventor: Gregg A. Nader
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Patent number: 8167754Abstract: A hybrid electro-mechanical transmission connectable with multiple power sources for launching and propelling a vehicle includes an output member and a stationary member. The transmission also includes a first planetary gear set having a first, a second, and a third node, and a compound planetary gear arrangement having a fourth, a fifth, a sixth, and a seventh node. The power sources include an engine, a first motor/generator and a second motor/generator. The engine, the first motor/generator and the second motor/generator are each operatively connected with the first planetary gear set, and the output member and the second motor/generator are each operatively connected with the compound planetary gear arrangement. Thus configured, the transmission provides forward under-drive and forward direct-drive gears for launching and propelling the vehicle, as well as a reverse gear.Type: GrantFiled: October 9, 2009Date of Patent: May 1, 2012Assignee: GM Global Technology Operations LLCInventor: Andrew W. Phillips
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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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Publication number: 20110177912Abstract: 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: March 5, 2010Publication date: July 21, 2011Inventors: Alexander Serkh, Dean Schneider
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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: 20100227731Abstract: A power train of an automatic transmission with eight forward speeds and two reverse speeds includes: a speed reduction unit including a first variable input member connected to an input shaft via a first clutch, first and second variably stopped members connected to a transmission case, and a reduced speed output member; an output unit including a reduced speed input member connected to the reduced speed output member, second and third variable input members connected to the input shaft via second and third clutches, respectively, a third variably stopped member connected to the transmission case, and a shifted speed output member connected to an output gear. A first brake variably stops the third variable stopped member; a second brake variably stops the first variable stopped member; and a third brake variably stops the second variable stopped member.Type: ApplicationFiled: May 17, 2010Publication date: September 9, 2010Applicant: Hyundai Motor CompanyInventor: Hyu Tae SHIM
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Publication number: 20100222176Abstract: A power train of an automatic transmission with eight forward speeds and two reverse speeds includes: a speed reduction unit including a first variable input member connected to an input shaft via a first clutch, first and second variably stopped members connected to a transmission case, and a reduced speed output member; an output unit including a reduced speed input member connected to the reduced speed output member, second and third variable input members connected to the input shaft via second and third clutches, respectively, a third variably stopped member connected to the transmission case, and a shifted speed output member connected to an output gear. A first brake variably stops the third variable stopped member; a second brake variably stops the first variable stopped member; and a third brake variably stops the second variable stopped member.Type: ApplicationFiled: May 17, 2010Publication date: September 2, 2010Applicant: Hyundai Motor CompanyInventor: Hyu Tae SHIM
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Publication number: 20100204002Abstract: A hybrid transmission includes an input member, an output member, a stationary member, and first and second planetary gearsets having a plurality of planetary gearset members. A first one-way clutch is operatively connected to the input member and at least one of the planetary gearset members. A second one-way clutch is operatively connected to at least one of the planetary gearset members and the stationary member. A first torque transmitting mechanism is selectively engageable to couple at least one of the planetary gearset members to the stationary member. A second torque transmitting mechanism being selectively engageable to operatively connect the input member to at least one of the planetary gearset members for unitary rotation.Type: ApplicationFiled: February 12, 2009Publication date: August 12, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: James B. Borgerson
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Patent number: 7628727Abstract: An automatic speed reducing ratio-switching apparatus comprising an input side carrier, an output side carrier, and an intermediate carrier includes first and second planetary gear mechanisms juxtaposed in the axial direction of an input shaft, first and second inner clutch members which are rotatable in one direction while locking rotation in the other direction of the input shaft, and have mutually different locking directions, first and second outer clutch members which are rotatable in one direction while locking rotation in the other direction of the input side or output side ring gear, and have mutually different locking directions, and a viscous resistance member functioning under a static frictional force to integrally rotate the input side or output side sun gear, the input side or output side planet gears, and the input side or output side ring gears respectively in an identical direction.Type: GrantFiled: January 26, 2007Date of Patent: December 8, 2009Assignee: SMC Kabushiki KaishaInventors: Shigekazu Nagai, Ryuichi Masui
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Patent number: 7507179Abstract: A multi-speed transmission with six forward gears and one reverse gear having an input and output shaft, three planetary gear sets (P1, P2, P3), six rotatable shafts and five control elements. The input shaft communicates with the gear set (P2), the shaft (3), and the shaft (4). The shaft (3) communicates with the carrier of the gear set (P1), the housing and the shaft (6). The shaft (4) communicates with the gear set (P1) and the housing. The shaft (5) communicates with the gear set (P1) and the gear set (P3). The shaft (6) communicates with the gear set (P2). The output shaft communicates with the gear set (P3) and the gear set (P2), and the gear set (P3) communicates with the housing.Type: GrantFiled: February 9, 2007Date of Patent: March 24, 2009Assignee: ZF Friedrichshafen AGInventor: Gerhard Gumpoltsberger
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Publication number: 20070254767Abstract: A bicycle hub gearbox comprises a first planetary gear mechanism and a second planetary gear mechanism and a tubular linking member. The second planetary gear mechanism is operatively coupled with the first planetary gear mechanism. The tubular linking member include a first toothed ring part engaged with the first planetary gear mechanism at a first axial region and a second toothed ring part engaged with the second planetary gear mechanism at a second axial region such that a permanent synchronization between the at least two planetary gear mechanisms is achieved. The first and second toothed ring parts have different diameters and being axially spaced apart.Type: ApplicationFiled: April 3, 2007Publication date: November 1, 2007Applicant: Shimano Inc.Inventor: Hiroyuki Okochi
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Patent number: 7198587Abstract: A multi-speed transmission is provided with a selectable (reversible) braking one-way clutch operative to brake rotation of a member of a planetary gear set of the transmission when the transmission is in reverse and first speed. First and second rotating input clutches are slipped when the vehicle is launched in reverse or first speed. The transmission is preferably characterized by the absence of a torque converter, but the invention may be implemented with a torque converter if desired.Type: GrantFiled: December 16, 2003Date of Patent: April 3, 2007Assignee: General Motors CorporationInventors: Farzad Samie, Scott H. Wittkopp
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Patent number: 7189182Abstract: A power transmission includes a rotary input member adapted to receive drive torque from a source of torque, a rotary output member and a torque transmitting mechanism selectively operable to transfer drive torque between the input member and the output member. The torque transmitting member includes a selectively operable one-way clutch including a rotatable member for switching the one-way clutch between a released mode and a locked mode. The torque transmitting mechanism also includes a friction clutch and an actuator. The friction clutch is operable to transmit torque to the rotatable member and control the mode of operation of the one-way clutch. The actuator is operable to apply a clutch and brake engagement force to the friction clutch.Type: GrantFiled: June 29, 2004Date of Patent: March 13, 2007Assignee: General Motors CorporationInventors: Paul D Stevenson, Scott H Wittkopp, Richard A Winship
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Patent number: 7052430Abstract: A powertrain includes a power transmission having an input shaft continuously connected directly between an engine and a planetary gear member of a first planetary gearset. Another member of the planetary gearset is selectively grounded by a torque transmitting mechanism to establish a reaction member during the launch of a vehicle incorporating the powertrain. The reaction member is established during both the lowest forward drive ratio and the reverse drive ratio. A third member of the planetary gearset transmits the torque from the input shaft, as modified by the planetary gearset, to other planetary gearsets in down stream power flow arrangement with the first planetary gearset.Type: GrantFiled: June 7, 2004Date of Patent: May 30, 2006Assignee: General Motors CorporationInventors: Paul D Stevenson, Scott H Wittkopp, Richard A Winship, James B. Borgerson, Joel M. Maguire, Kent H. Kienzle, Donald L. Dusenberry, Jeffrey J. Biallas, Clinton E. Carey
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Patent number: 6953412Abstract: A reversible one-way clutch (90) is positioned in parallel with a friction pack (62, 72) to drive a planetary transmission (10) in low gear and reverse. The clutch (90) has a biasing plate (96) secured to its surface to bias the clutch (90) in a direction so that the transmission (10) operates in either low gear or reverse gear. The biasing plate (96) is hydraulically actuated to bias the clutch (90) between low gear, neutral, and reverse gear.Type: GrantFiled: December 31, 2001Date of Patent: October 11, 2005Inventors: Thomas Edmund Braford, Daniel P. Costin
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Patent number: 6827664Abstract: A powertrain includes a power transmission having an input shaft continuously connected directly between an engine and a planetary gear member of a first planetary gearset. Another member of the planetary gearset is selectively grounded by a torque transmitting mechanism to establish a reaction member during the launch of a vehicle incorporating the powertrain. The reaction member is established during both the lowest forward drive ratio and the reverse drive ratio. A third member of the planetary gearset transmits the torque from the input shaft, as modified by the planetary gearset, to other planetary gearsets in down stream power flow arrangement with the first planetary gearset.Type: GrantFiled: November 15, 2002Date of Patent: December 7, 2004Assignee: General Motors CorporationInventors: Paul D. Stevenson, James B. Borgerson, Joel M. Maguire, Kent H. Kienzle, Donald L. Dusenberry, Jeffrey J. Biallas, Clinton E. Carey
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Patent number: 6746359Abstract: A primary shift portion has a first predetermined speed ratio at a first shift-speed, a second predetermined speed ratio at a second shift-speed, a speed ratio of “1” at third and fifth shift-speeds, and a third predetermined speed ratio at fourth and sixth shift-speeds. A secondary shift portion has a predetermined reduction speed ratio at first, second, third, and fourth shift-speeds, and a speed ratio of “1” at fifth and sixth shift-speeds. The method realizes a 6-speed automatic transmission being capable of sequentially up- and down-shifting and a plurality of skip shifts with an existing 5-speed automatic transmission.Type: GrantFiled: December 16, 2002Date of Patent: June 8, 2004Assignee: Hyundai Motor CompanyInventors: Myoung-Hun Kang, Jae-Duk Jang, Hyu-Tae Shim
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Patent number: 6719109Abstract: A method for the control of a bi-directional overrunning clutch assembly (10) disposed within a vehicle transmission, including the steps of initiating a drive function control routine (112) within an electronic control unit and sensing the commanded gear ratio within the transmission. The method steps further include determining whether a first gear function (132) should be initiated based on the commanded gear ratio and determining whether a second gear function (150) should be initiated based on the commanded gear ratio. The method also includes sensing whether the reverse engagement members (24B) and the forward engagement members (24A) of the bi-directional clutch (10) are engaged when neither the first gear function (132) nor the second gear function (150) are initiated.Type: GrantFiled: September 30, 2002Date of Patent: April 13, 2004Assignee: BorgWarner Inc.Inventors: Jin Li, Mark Buchanan
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Patent number: 6517463Abstract: A compact automatic transmission for a vehicle capable of preventing increase in relative rotational speed between shift elements. A planetary gear unit is provided with a sun gear to which rotation of an input shaft is input, a carrier that can be stopped from rotating, and a ring gear for outputting, to a planetary gear set, rotation that is reduced in speed relative to that of the input shaft. A clutch is connected/disconnected, the input shaft and the sun gear are appropriately connected/disconnected, and the carrier is appropriately stopped/unstopped by a brake and a one-way clutch. This prevents relative rotational speed between shift elements of the gear unit that does not participate in a shifting operation from excessively increasing. When the clutch is disposed between the input shaft and the sun gear, the torque capacity of the clutch can be reduced as compared with the case where it is disposed between the gear unit and the gear set.Type: GrantFiled: January 11, 2001Date of Patent: February 11, 2003Assignees: Aisin Aw Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Nobutada Sugiura, Takuya Ishii, Minoru Todo, Kazuhisa Ozaki, Youichi Hayakawa, Hiroshi Ito, Toshiki Kanada, Yasuo Hojo, Yuji Kashihara
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Patent number: 6481551Abstract: A planar inertia-actuated overrunning coupling assembly having a pocket plate and a notch plate mounted on a common rotary axis with planar juxtaposed coupling surfaces. A pocket plate having a plurality of angularly spaced pockets that receive adjustable clutch elements, the notch plate having angularly spaced notches, a clutch element being mounted in each pocket for pivotal movement about one edge thereof, an inertia-actuated ball in each pocket adjacent a clutch element, the pocket being formed with a ramp surface engageable with the inertiaactuated ball whereby the clutch element is shifted into locking engagement with the pocket plate in response to an inertia force acting on the actuator balls whereby torque is transmitted from one plate to the other in one direction of relative rotation of the plates, and wherein the clutch elements move out of registry with the pocket plate upon a reversal in the direction of relative rotation of the plates.Type: GrantFiled: November 27, 2000Date of Patent: November 19, 2002Assignee: Means Industries, Inc.Inventor: Stephen M. Ruth
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Patent number: 6210300Abstract: A reversible one-way clutch (90) is positioned in parallel with a friction pack (62, 72) to drive a planetary transmission (10) in low gear and reverse. The clutch (90) has a biasing plate (96) secured to its surface to bias the clutch (90) in a direction so that the transmission (10) operates in either low gear or reverse gear. The biasing plate (96) is hydraulically actuated to bias the clutch (90) between low gear, neutral, and reverse gear.Type: GrantFiled: January 13, 2000Date of Patent: April 3, 2001Assignee: BorgWarner Inc.Inventors: Daniel P. Costin, Thomas Braford
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Patent number: 5902213Abstract: In an automatic transmission including a gear unit with a second brake connected in series with a one-way clutch and a first brake that is not connected with a one-way clutch, the second brake and the first brake are controlled by linear solenoid valves individually. A vehicle load is detected, and when the vehicle is in a high load state, at first the second brake performs an engagement control, then after input rotation to the gear unit is synchronized with output rotation of the gear unit, the first brake performs an engagement control. When the vehicle is in a low load state, at first the first brake performs an engagement control, then after input rotation to the gear unit is synchronized with output rotation of the gear unit, the second brake performs an engagement control.Type: GrantFiled: December 22, 1997Date of Patent: May 11, 1999Assignee: Aisin AW Co., Ltd.Inventors: Hiroshi Tsutsui, Masaaki Nishida, Yoshihisa Yamamoto, Akitomo Suzuki
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Patent number: 5591099Abstract: A shift mechanism for an automatic transmission includes a frictional engagement element arranged between the case of the automatic transmission and one element of a planetary gear unit and a hydraulic servo unit for engaging the frictional engagement element. A one-way clutch is connected to that same one element of the planetary gear unit for selectively locking it to the case. The one-way clutch is axially spaced from the frictional engagement element with the hydraulic servo unit therebetween. Further, the one-way clutch has its outer race connected to the case and its inner race connected to the aforementioned element of the planetary gear unit through a connection member axially extending along the inner circumferential side of the hydraulic servo unit. The inner race is formed with a radial lubricating oil passage in fluid communication with an oil passage in a transmission shaft.Type: GrantFiled: May 16, 1995Date of Patent: January 7, 1997Assignee: Aisin AW Co., Ltd.Inventors: Kazumasa Tsukamoto, Masahiro Hayabuchi, Masanori Kadotani, Satoru Kasuya
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Patent number: 5503604Abstract: A multiple-speed automatic transmission for automotive vehicles able to produce three underdrive speed ratios, a near direct ratio, and two overdrive ratios. A kinematic arrangement includes three simple planetary gear units (48, 50, 52). One of these produces an underdrive output drivably connected to components of the other gear units, three friction clutches (118, 120, 122) to friction brakes (124, 126), an overrunning coupling (82), a final drive gearset (94), a differential mechanism (102), a chain drive mechanism (30) for transmitting power from the turbine (16) of a torque converter (10) to the input shaft, which drives elements of the planetary gear units.Type: GrantFiled: December 27, 1994Date of Patent: April 2, 1996Assignee: Ford Motor CompanyInventors: Stanley L. Pierce, Clinton F. Justice
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Patent number: 5348518Abstract: An automatic transmission comprising a torque converter and a change-speed transmission having a plurality of planetary gearsets and friction elements. This automatic transmission has a central supporting member fixedly mounted in a transmission case. A drum supported by this central supporting member contains clutch components and a one-way clutch inside. On the outer cylinder of the drum is mounted a band brake. The outer race of the one-way clutch in the drum is connected to the clutch hub in the drum, while the inner race of the one-way clutch is connected to the outer cylinder of the drum.Type: GrantFiled: May 3, 1990Date of Patent: September 20, 1994Assignees: Aisin A W Kabushiki Kaisha, Toyota Jidosha Kabushiki KaishaInventors: Takao Taniguchi, Kazumasa Tsukamoto, Masahiro Hayabuchi, Koji Noda
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Patent number: 5219246Abstract: A drilling assembly (210) for in-situ cast piles has a drill stem (211) with a helical flyte (212). A drilling head (224), with teeth (225), and a belling tool (226), with retractable cutting tools (227) are mounted on, in driving engagement with, the non-circular shank (218) of a soil stabilization spear (214). The spear (214) drills a pilot hole in advance of the drilling head (224) and grout pumped down through the tubular body (215) of the spear (214) fills the cracks and fissures in the surrounding soil to stabilize the soil as the drilling assembly (210) is advanced. When the desired depth is reached, the rotation of the drilling assembly (210) is reversed and cutting tools (227) are extended to cut a "bell" or annular chamber around the hole. As the drill assembly (210) is withdrawn from the hole, grout pumped down the interior (230) of the stem (211) fills the hole to cast a pile in-situ, the increased diameter of the bottom of the pile, and the stabilized soil around it, increasing its load strength.Type: GrantFiled: April 22, 1991Date of Patent: June 15, 1993Assignee: Catawa Pty. Ltd.Inventors: Peter G. Coutts, Robin McQueen
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Patent number: 5207123Abstract: The invention relates to an electrohydraulic control for an automatic transmission of a motor vehicle. In order to be able to utilize, in the coasting operation of the motor vehicle in the driving position D of the automatic transmission, also the first gear, a one-way clutch, which transmits only driving torques but is required for the shifting operation, when the first gear is engaged, is bridged by a brake so that the transmission can transmit not only driving but also coasting torques and can therefore transmit the engine braking torque.Type: GrantFiled: February 13, 1992Date of Patent: May 4, 1993Assignee: Dr. Ing. h.c.F. Porsche AGInventor: Joseph Petersmann
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Patent number: 5135086Abstract: The assembly tool comprising an electrically operated clutch assembly and achieves rapid termination of energy throughput to provide accurate torque delivery for fastener tightening and similar applications. The clutch assembly includes a pair of equal diameter, axially aligned input and output hubs having a wrap-spring disposed thereabout. One end of the wrap-spring is coupled to the input hub and the other is coupled to a control annulus disposed concentrically and freely rotatably about the output hub. An electromagnet also concentrically disposed about the output hub is activated to couple the control annulus to the output hub. A resulting drag on the wrap-spring tightens it about the output hub and power is transmitted. Deactivation of the electromagnet provides rapid release of the wrap-spring and termination of power throughput. A one way (overrunning) clutch couples the hubs when power is applied in the opposite direction to, for example, facilitate removal of fasteners.Type: GrantFiled: November 12, 1991Date of Patent: August 4, 1992Assignee: Star Precision Tools, Inc.Inventor: Donald A. Ciolli