Multiple Cone Patents (Class 74/349)
  • Patent number: 8127636
    Abstract: A variable speed transmission including a housing, a frusto-conical gear having a hollow extending longitudinally through the gear and a plurality of spaced teeth on an inner and/or outer surface thereof. The plurality of spaced apart teeth include alternately teeth having a first addendum and teeth having a second or larger addendum. The transmission also includes a power shaft and a plurality of sliding face gears adapted to engage an input gear from an engine and a drive gear for engaging the frusto-conical gear.
    Type: Grant
    Filed: November 5, 2008
    Date of Patent: March 6, 2012
    Inventor: Hussain Y. Mothaffar
  • Patent number: 7958799
    Abstract: A brake assembly is activated by a vehicle brake. The brake assembly is mounted upstream from a transmission and either up or downstream from a clutch. A controller for the transmission brake allows the driver to adjust both a transmission brake lead/lag time and force relative to the vehicle wheel brakes.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: June 14, 2011
    Inventors: James A. Cillessen, Gabriel A. Chihoski
  • Patent number: 7665377
    Abstract: A continuously variable transmission system comprising an input and output rotational member each with a first circular end and a second circular end is disclosed. The output rotational member is located such that the second circular input member end faces the first output member end and the input and output rotational members share a tangential plane. A first and second idler wheel, attached to an idler shaft, contact the input and output rotational members. The first and second idler wheels and idler shaft are configured to translate rotation from the input rotational member to the output rotational member.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: February 23, 2010
    Inventors: Steven Harrelson, Steven King
  • Patent number: 7597638
    Abstract: A transmission including an input cog assembly mounted to an input shaft and an output cog assembly mounted to an output shaft. The input and output cog assemblies include a plurality of varying diameter input and output cogs, respectively, arranged sequentially. A chain links a pair of input and output cogs for transmitting power from the input cog assembly to the output cog assembly. The chain, in operation, has a high-tension side and a low-tension side. A derailleur is engageable with the low-tension side of the chain to laterally urge the chain from a current output cog to a destination output cog.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: October 6, 2009
    Assignee: SRAM, LLC
    Inventor: James A. Cooke
  • Patent number: 7574935
    Abstract: In a transmission having two revolving transmission elements, each of which has at least one running surface for a revolving coupling element, at least one running surface having at least two running paths for the coupling element having different running radii and the two transmission elements being braced, while incorporating the coupling element, via a bracing device which presses the two transmission elements against the coupling element with a variable pressure, the bracing device comprises a pressure device connected in series with a spring element.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: August 18, 2009
    Inventors: Ulrich Rohs, Christoph Dräger, Werner Brandwitte
  • Patent number: 7461570
    Abstract: A variable transmission that works in conjunction with a conventional vehicle automatic transmission, includes at least one frusto-conical gear having a hollow space therewithin for housing a plurality of sliding face gears supported on a main power shaft, wherein the plurality of sliding face gears are hydraulically slidable to engage one another in a various step-up or step-down configurations to provide a smoother automatic shifting and driving condition.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: December 9, 2008
    Inventor: Hussain Y. Mothaffar
  • Patent number: 7448292
    Abstract: A transmission with a simple structure and mechanism, light-weight and compact is realized. In the transmission, a first rotation shaft coaxially fixed to a first turning transmission wheel and a second rotation shaft coaxially fixed to a second turning transmission wheel are arranged in parallel with each other. A support shaft is arranged to extend between the first turning transmission wheel and the second turning transmission wheel. An intermediary transfer wheel is provided on the support shaft rotatably and movably along the longitudinal direction of the support shaft. The intermediary transfer wheel contacts with a side peripheral surface of the first turning transmission wheel and the side peripheral surface of the second turning transmission wheel and moves longitudinally along the support shaft while maintaining the contact.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: November 11, 2008
    Inventor: Nobuo Tomizawa
  • Patent number: 7267023
    Abstract: A miter gear transmission includes a driving shaft, an idler cluster and a driven shaft. The idler cluster includes two cone-shaped gear sets, each having a proximate end with a gear having a largest number of teeth and a distal end with a gear having a smallest number of teeth. Gears with a decreasing number of teeth are located between the proximate and distal ends. The two gear sets are joined at their proximate ends. The idler cluster is suspended in bearings at a 45 degree angle between the driving and driven shafts with first and second spur gears slidably engaged to the shafts. Two actuator moves the spur gears along the shafts to engage the gear teeth of each of gears of the gear sets. By moving the spur gears to engage different gears, different gear ratios are achieved. A cable loop shifter moves the actuators along the shafts.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: September 11, 2007
    Inventor: Edmund Kurt Wallasch
  • Patent number: 7231845
    Abstract: A multi cone selector in a transmission employs sandwiched cone friction surfaces 19A, 20A and 21A and these are shown in free or unengaged state while the corresponding friction surfaces as numerals 19, 20 and 21 are shown as engaged. This comparative illustration shows the relative positions of the surfaces at different times since the “A” surfaces and the non “A” surfaces are the same circumferential surfaces. The cone selector is used to engage free rotating gear a female part 22 of a multi-cone selector. A hydraulic actuator 23 is received by internal gear case wall 24 formed so as to prevent any radial or axial movement of the actuator itself. A hydraulic coupling, in this case the hydraulic coupling is formed as hydraulic springs or bags illustrated at 26. The crown of hydraulic spring outlet piston is formed so as to clip in a housing of a thrust bearing 29.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: June 19, 2007
    Assignee: Select Design Technologies Limited
    Inventor: Boris Klaricic
  • Patent number: 7017438
    Abstract: In a transmission of the constant mesh type a number of gear selectors are driven by using a hydraulic coupling between input and output pistons. The hydraulic coupling functions as a hydraulic spring and force multiplier. A hydraulic actuator (23) is received by internal gear case wall (24) formed so as to prevent any radial or axial movement of the actuator itself. A hydraulic coupling, in this case the hydraulic coupling is formed as hydraulic springs or bags illustrated at (26).
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: March 28, 2006
    Assignee: Select Design Technologies Limited
    Inventor: Boris Klaricic
  • Patent number: 6796200
    Abstract: A bicycle transmission has a plurality of cone gears with multiple gear surfaces and a corresponding plurality of ratio-change assemblies for selecting one of the gear surfaces of each cone gear. One cone gear provides reductions of the input rotary speed while the other cone gears provide increases in the input rotary speed. The ratio-change assemblies include apparatus for moving its gear surface both vertically and horizontally. The transmission includes a telescopic pedal arm assembly for input power and torque. The telescopic pedal arm is driven between an extended position and a retracted position during each revolution so that the available torque increases in conjunction with available leg power.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: September 28, 2004
    Inventor: John Robert Kelly
  • Publication number: 20030230157
    Abstract: A bicycle transmission has a plurality of cone gears with multiple gear surfaces and a corresponding plurality of ratio-change assemblies for selecting one of the gear surfaces of each cone gear. One cone gear provides reductions of the input rotary speed while the other cone gears provide increases in the input rotary speed. The ratio-change assemblies include means for moving its gear surface both vertically and horizontally.
    Type: Application
    Filed: June 18, 2002
    Publication date: December 18, 2003
    Inventor: John Robert Kelly
  • Patent number: 6499373
    Abstract: A stack of gears including and a first and a second gear disposed in parallel relation to, and sharing a common axis with, the first gear. Each gear is of a different diameter and each includes a plurality of teeth. At least one transition train is teeth disposed between the first gear and the second gear. Like the first and second gear, the transition train also includes a plurality of teeth that are disposed in substantially perpendicular relation to the common axis. The transition train is dimensioned to form at least one deceleration channel and at least one acceleration channel extending from each of the first gear and the second gear. The stack of gears may be dimensioned for use with a pinion gear, or with a continuous loop drive, such as a chain or belt.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: December 31, 2002
    Inventor: Dale E. Van Cor
  • Publication number: 20020043120
    Abstract: A stack of gears including and a first and a second gear disposed in parallel relation to, and sharing a common axis with, the first gear. Each gear is of a different diameter and each includes a plurality of teeth. At least one transition train is teeth disposed between the first gear and the second gear. Like the first and second gear, the transition train also includes a plurality of teeth that are disposed in substantially perpendicular relation to the common axis. The transition train is dimensioned to form at least one deceleration channel and at least one acceleration channel extending from each of the first gear and the second gear. The stack of gears may be dimensioned for use with a pinion gear, or with a continuous loop drive, such as a chain or belt.
    Type: Application
    Filed: June 25, 2001
    Publication date: April 18, 2002
    Inventor: Dale E. Van Cor
  • Patent number: 6360625
    Abstract: The invention provides a power transmission apparatus having a reduced power transmission loss. In the power transmission apparatus, an input shaft side variable pitch circle gear, an output shaft side variable pitch circle gear and a cycloid sliding gear which have a shape accumulated by a cycloid gear in which a pitch circle continuously changes are meshed with each other. The cycloid sliding gear slides and an engagement position thereof changes, thereby changing a radius of an engagement pitch circle of the gear so as to change a shift ratio.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: March 26, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Taizo Miyazaki, Toshimichi Minowa, Tomoyuki Hanyu, Ryoso Masaki, Yasuo Morooka
  • Patent number: 6349607
    Abstract: A transfer ring (10) for a continously variable transmission. The transfer ring (10) includes an inner ring (12), an outer ring (18) and a spacer ring (24). The inner, outer and spacer rings are substantially coaxial with a transfer ring (10) axis. The spacer ring (24) is disposed radially between the inner and outer rings. The inner and outer rings are secured to the spacer ring (24) to substantially prevent relative movement therebetween. The spacer ring (24) has non-overlapping radially inwardly (26) and radially outwardly (27) facing slots extending respectively into inner and outer circumferences thereof. Laminar segments (42) are mounted in each of the slots and are slidably displaceable in a direction parallel to the transfer ring axis (22). The segments (42) are generally radially aligned with the transfer ring axis (22) and have upper (44) and lower (45) tabs straddling the spacer ring (24) to limit the distance which the segments (42) may be slidably displaced.
    Type: Grant
    Filed: March 22, 2000
    Date of Patent: February 26, 2002
    Assignee: Designco Inc.
    Inventor: Noru Gogovitza
  • Patent number: 6343521
    Abstract: An infinitely variable gear transmission system includes a pair of cones, one the driving cone and the other the driven cone, in which each have at their external surfaces a pair of gears which interact to transmit power from the driving gear to the driven gear, and where the means for controlling the speed of the driving gear and the driven the gear includes an accelerator linkage which causes the gears to move longitudinally back and forth relative to the rotating cones.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: February 5, 2002
    Inventor: Cecil R. Brannon
  • Patent number: 6257083
    Abstract: An infinitely variable gear transmission system includes a pair of cones, one the driving cone and the other the driven cone, in which each have at their external surfaces a pair of gears which interact to transmit power from the driving gear to the driven gear, and where the means for controlling the speed of the driving gear and the driven the gear includes an accelerator linkage which causes the gears to move longitudinally back and forth relative to the rotating cones.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: July 10, 2001
    Inventor: Cecil R. Brannon
  • Patent number: 6186017
    Abstract: A multi-speed bicycle transmission having a housing including spaced, opposing face plates, with each face plate having a pedal shaft opening and a secondary shaft opening. A pedal shaft is rotatably disposed within the pedal shaft openings of the face plates, and a secondary shaft is disposed within the secondary shaft openings. As such, the secondary shaft is spaced from, and parallel to, the pedal shaft. A pedal shaft set of gears are mounted on the pedal shaft between the face plates. The pedal shaft set of gears include: (1) a first set of pedal shaft gears mounted on the pedal shaft, (2) a second set of pedal shaft gears rotatably mounted on the pedal shaft, and (3) a third set of pedal shaft gears rotatably mounted on the pedal shaft including first means for selective driving engagement with the second set of pedal shaft gears. The third set of pedal shaft gears including a drive gear means such as a sprocket for engaging a drive chain.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: February 13, 2001
    Inventors: In H. Kang, Joong S. Chang
  • Patent number: 6089114
    Abstract: A multi-speed transmission for bicycles, comprising: a housing including spaced, opposing face plates, each face plate having a pedal shaft opening and a secondary shaft opening; a pedal shaft rotatably disposed within said pedal shaft openings; a secondary shaft disposed within said secondary shaft openings, wherein the secondary shaft is spaced from the pedal shaft and substantially parallel thereto; and a pedal shaft set of gears mounted on the pedal shaft between the face plates, comprising: (1) a first set of pedal shaft gears mounted on the pedal shaft, (2) a second set of pedal shaft gears rotatably mounted on the pedal shaft, and (3) a third set of pedal shaft gears rotatably mounted on the pedal shaft including first means for selective driving engagement with the second set of pedal shaft gears, the third set of pedal shaft gears including a drive gear means.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: July 18, 2000
    Inventor: In H. Kang
  • Patent number: 6055880
    Abstract: A continuously variable transmission (10) having input (12) and output (14) gearsets each having a pair of bevelled gears (16) rotatable about generally coplanar respective axes of rotation (22) and with the two bevelled faces (24) in a spaced-apart parallel relationship. The input (12) and output (14) gearsets are mounted opposite one another with the bevelled faces (24) aligned. A restorably deformable transfer ring is mounted between the input and output gearsets and a portion of the transfer ring (28) is captured between opposed teeth (24) of the bevelled gears (16). The transfer ring (28) is laterally moveable relative to the input (12) and output (14) gearsets.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: May 2, 2000
    Assignee: Designco Inc.
    Inventor: Noru Gogovitza
  • Patent number: 4630495
    Abstract: There is disclosed a continuously variable ratio power transmission means comprising truncated cones having concave parabolic circumferential surfaces which surfaces are in rolling contact one with another and which can be moved in a linear fashion to provide a variable ratio dependent on point extent of overlap and rolling contact. In a preferred form of the invention positive drive is provided by a rack or band of gear teeth being provided in a helix around the periphery of each cone in a constant helix or lead angle.
    Type: Grant
    Filed: February 9, 1983
    Date of Patent: December 23, 1986
    Assignee: Fairey Hydraulics Limited
    Inventor: John D. Smith
  • Patent number: 4515030
    Abstract: A pricing mechanism for a mechanical computer, used in connection with a fuel dispensing pump, is of expanded capacity, enabling a price of $0.000 to $4.999 to be set and posted. The mechanism for expanding the variator comprises a supplemental range assembly, which cooperates with a secondary cone gear and a secondary summing mechanism disposed on the shaft of one of the range arm assemblies; the selector gear of the supplemental assembly can be selectively positioned to post a dollar value through four dollars. Means for reducing the speed of the output gears of the range arm assemblies, and for minimizing the size of the secondary integrator, are also provided.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: May 7, 1985
    Assignee: Petroleum Meter & Pump Co., Inc.
    Inventor: Tom Stephenson
  • Patent number: 4183256
    Abstract: A variable-ratio angular speed converter of the gear box type is arranged so that each speed reduction setting on the output shaft is a prescribed fraction of the speed reduction of the next-preceding setting. A first tapered gear cluster is fixedly supported on the input shaft, while a plurality of similar second clusters are supported in spaced relation for rotation on an intermediate shaft. Successive speed reductions of the same nominal ratio are imparted (1) between the first cluster on the input shaft and the first second cluster on the intermediate shaft and (2) between successive second clusters on the intermediate shaft. A housing adjustably supported on the output shaft has a selector gear for engaging an arbitrary one of the gears on any of the first and second clusters.
    Type: Grant
    Filed: January 5, 1978
    Date of Patent: January 15, 1980
    Assignee: Milstein Medical Research Foundation, Inc.
    Inventor: Arnold St. J. Lee