Patents by Inventor Ravindra Jwalapathy

Ravindra Jwalapathy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7827880
    Abstract: The invention provides a steering column assembly for a vehicle. The steering column assembly includes a steering column operable to adjustably support a steering wheel in the vehicle. The steering column assembly also includes a locking bracket adjacent to the steering column and moveable along a path for collapsing movement. The steering column assembly also includes a locking member supported in two-way movement by the locking bracket between a first position and a second position spaced from one another. In the first position, the locking member locks the locking bracket and the steering column member together. When the locking member is in the second position, the steering column member is moveable relative to the locking bracket. The steering column assembly also includes at least one quick release bolt engaged with the locking bracket to selectively fix the locking bracket with respect to the vehicle.
    Type: Grant
    Filed: March 21, 2005
    Date of Patent: November 9, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Richard K. Riefe, Marvin V. Manwaring, Ray G. Armstrong, Jason R. Ridgway, Ravindra Jwalapathy
  • Patent number: 7434840
    Abstract: A steering column assembly includes a steering column having a selectively collapsible structure that enables said column to collapse in the event of an impact force resulting from a vehicle crash. An adaptive energy absorbing device is associated with said column and operates in a first condition to absorb a first level of energy of the collapsing column and in a second condition to absorb a second level of energy of the collapsing column. The assembly includes a telltale detection device that is associated with the adaptive energy absorbing device and is responsive to a change in condition of the energy absorbing device prior to a collapse event to provide a signal to a user of the condition of the energy absorbing device.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: October 14, 2008
    Assignee: Delphi Technologies, Inc.
    Inventors: Marvin V. Manwaring, Richard K. Riefe, Ray G. Armstrong, Lee M. Tinnin, Ravindra Jwalapathy, Robert L. Stearns
  • Patent number: 7347451
    Abstract: A steering column assembly (10) for a vehicle includes first and second members (12, 14) engaged for movement relative to one another along one of a tilting path (16) and a telescoping path. The steering column assembly (10) also includes an electric lock (18) operable to lock the first and second members (12, 14) into a locked configuration that restricts movement and an unlocked configuration that permits movement between the members. The steering column assembly (10) also includes a sensor (20) operable to sense a vehicle crash condition and then emit a crash signal to a controller (22) that controls the electric lock (18) to change from the locked configuration to the unlocked configuration in response to the signal.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: March 25, 2008
    Assignee: Delphi Technologies, Inc.
    Inventors: Richard K Riefe, Minoo J. Shah, Ray G. Armstrong, Ravindra Jwalapathy
  • Patent number: 7331608
    Abstract: An apparatus for positioning a steering wheel of a vehicle in a desired position. The invention includes a steering column having a steering wheel supporting portion for supporting the steering wheel. The steering column also includes first and second members movable relative to one another. The first and second members are moved relative to one another to move the steering wheel supporting portion, and the steering wheel, along either tilting path of movement, or a telescoping path of movement, or both. The invention also includes a locking device that selectively engages the first and second members to lock the first and second members with respect to one another. The locking device substantially prevents movement of the steering wheel supporting portion, and the steering wheel, along the path of movement. The locking device includes an electric motor. The first and second members are locked and unlocked with respect to one another in response to activation of the electric motor.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: February 19, 2008
    Assignee: Delphi Technologies, Inc.
    Inventors: Ray G. Armstrong, Richard K. Riefe, Ravindra Jwalapathy, Marvin V. Manwaring
  • Patent number: 7325834
    Abstract: An apparatus and method of operation dissipates energy associated with the telescopic collapse of preferably two steering column members. The first and second steering column members are moveable relative to one another along a collapse path. At least one anvil is fixed with one of the first and second steering column members. A strap extends along a bent path around the at least one anvil to first and second free ends. The apparatus also includes a lock device operative in a first condition to restrain the first free end with respect to the first steering column member and in a second condition to release the first free end of the strap.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: February 5, 2008
    Assignee: Delphi Technologies, Inc.
    Inventors: Marvin V. Manwaring, Richard K. Riefe, Ray G. Armstrong, Lee M. Tinnin, Ravindra Jwalapathy
  • Patent number: 7229096
    Abstract: The invention provides an apparatus for absorbing energy in a collapsible steering column of a vehicle. A portion of the apparatus is deformable in response to an excessive frontal impacting force to the steering column so that injury to the vehicle operator is reduced. The apparatus includes a first steering column member and a second steering column member connected to one another such that the first steering column member slides relative to the second steering column member. The apparatus also includes a first anvil associated with a said first steering column member and a second anvil associated with said second steering column member. The apparatus also includes an energy absorbing member having a first portion extending around and operable to be drawn over said first anvil and a second portion extending around and operable to be drawn over said second anvil.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: June 12, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: Marvin V. Manwaring, Richard K. Riefe, Ray G. Armstrong, Lee M. Tinnin, Ravindra Jwalapathy
  • Patent number: 7228755
    Abstract: A vehicular steering column assembly (16) comprises a support bracket (26) which is joined to an outer, non-rotating sleeve (22). A release capsule (30) is releasably joined to a mounting surface (28) of the support bracket (26) via a plurality of spherical bodies (56) whose protruding crowns (52) are seated in corresponding longitudinally-extending furrows (54) in the release capsule (30). Upon the application of sufficient force to the steering column (16), such as during a collision, the support bracket (26) is urged out of engagement with the release capsule (30) with the respective furrows (54) sliding over the crowns (52). The sliding engagement between the crowns (52) and the furrows (54) can be adjusted to establish a highly predictable and consistent release force and which is capable of increasing the frequency value for the steering column (16).
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: June 12, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: Ray G. Armstrong, Richard K. Riefe, Ravindra Jwalapathy
  • Patent number: 7178422
    Abstract: A locking device for selectively preventing telescoping movement between first and second members and tilting movement associated with the first and second members. The locking device includes an electric motor for generating a moving force. The locking device also includes a first locking portion associated with the electric motor to move between first locked and unlocked positions in response to the moving force. The first locking portion selectively prevents telescoping movement between the first and second members. The locking device also includes a second locking portion spaced from the first locking portion. The second locking portion is also associated with the electric motor to move between second locked and unlocked positions in response to the moving force. The second locking portion selectively prevents tilting movement associated with the first and second members.
    Type: Grant
    Filed: July 2, 2004
    Date of Patent: February 20, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: Ray G. Armstrong, Philip J. McCarthy, Ravindra Jwalapathy
  • Patent number: 7137499
    Abstract: The invention provides an apparatus for shifting an automatic transmission having a shift position select lever. The invention selectively shifts the transmission to one of a plurality of different transmission shift positions. The invention includes a steering column positionable in a passenger compartment of a vehicle. A switch is mountable in the passenger compartment of the vehicle and operable to emit a first signal representative of a desired change with respect to a transmission shift position. A motor generates a moving force and a linkage associated with the motor to transmit the moving force from the motor to a shift lever of a transmission of the vehicle. A sensor is responsive to a current transmission shift position and emits a second signal corresponding to the sensed current transmission shift position. A controller is responsive to the switch and to the sensor.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: November 21, 2006
    Assignee: Delphi Technologies, Inc.
    Inventors: Richard K. Riefe, Tamara J. Reppuhn, Michael C. Vermeersch, David M. Byers, Ravindra Jwalapathy
  • Patent number: 7124866
    Abstract: An apparatus for absorbing energy includes first and second steering column members connected for sliding movement. A first anvil is associated with one of the first and second steering column members and an energy absorbing member is provided having a first portion that extends around and operable to be drawn over the first anvil in response to the sliding movement between the first and second steering column members. A dead loop is formed in the energy absorbing member between its mounting location and the first anvil and is operative to enable the dead loop to straighten in response to application of an applied force prior to movement of the energy absorbing member across the first anvil.
    Type: Grant
    Filed: May 6, 2004
    Date of Patent: October 24, 2006
    Assignee: Delphi Technologies, Inc.
    Inventors: Marvin V. Manwaring, Richard K. Riefe, Ray G. Armstrong, Lee M. Tinnin, Ravindra Jwalapathy
  • Publication number: 20060226646
    Abstract: A vehicular steering column assembly (16) comprises a support bracket (26) which is joined to an outer, non-rotating sleeve (22). A release capsule (30) is releasably joined to a mounting surface (28) of the support bracket (26) via a plurality of spherical bodies (56) whose protruding crowns (52) are seated in corresponding longitudinally-extending furrows (54) in the release capsule (30). Upon the application of sufficient force to the steering column (16), such as during a collision, the support bracket (26) is urged out of engagement with the release capsule (30) with the respective furrows (54) sliding over the crowns (52). The sliding engagement between the crowns (52) and the furrows (54) can be adjusted to establish a highly predictable and consistent release force and which is capable of increasing the frequency value for the steering column (16).
    Type: Application
    Filed: March 31, 2005
    Publication date: October 12, 2006
    Applicant: DELPHI TECHNOLOGIES INC.
    Inventors: Ray Armstrong, Richard Riefe, Ravindra Jwalapathy
  • Patent number: 7118131
    Abstract: An apparatus and method is provided for absorbing energy. The energy absorbing device includes an anvil movable relative to a spaced axis. The anvil defines a plurality of profiles corresponding to different rates of energy absorption. The plurality of profiles are radially adjacent to one another with respect to axis. The anvil can be moved by explosive charges. For example, the anvil can define a follower portion adjacent a first explosive charge and move in response to an explosion of the first explosive charge.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: October 10, 2006
    Assignee: Delphi Technologies, Inc.
    Inventors: Marvin V. Manwaring, Richard K. Riefe, Ray G. Armstrong, Lee M. Tinnin, Ravindra Jwalapathy
  • Publication number: 20060207379
    Abstract: The invention provides a steering column assembly for a vehicle. The steering column assembly includes a steering column operable to adjustably support a steering wheel in the vehicle. The steering column assembly also includes a locking bracket adjacent to the steering column and moveable along a path for collapsing movement. The steering column assembly also includes a locking member supported in two-way movement by the locking bracket between a first position and a second position spaced from one another. In the first position, the locking member locks the locking bracket and the steering column member together. When the locking member is in the second position, the steering column member is moveable relative to the locking bracket. The steering column assembly also includes at least one quick release bolt engaged with the locking bracket to selectively fix the locking bracket with respect to the vehicle.
    Type: Application
    Filed: March 21, 2005
    Publication date: September 21, 2006
    Inventors: Richard Riefe, Marvin Manwaring, Ray Armstrong, Jason Ridgway, Ravindra Jwalapathy
  • Patent number: 7093855
    Abstract: A steering column assembly includes a compression bracket for attachment to a vehicle body, and an adjustable steering column assembly movably supported by the compression bracket along a longitudinal axis between adjusted positions. A pair of locking elements are operably connected to the compression bracket and movable between a locked position for preventing longitudinal movement therebetween and a release position for allowing longitudinal adjustment of the steering column. The first element presents a detent recess, and the second locking element is movable between the locked position engaging the detent recess and the release position out of engagement with the detent recess.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: August 22, 2006
    Assignee: Delphi Technologies, Inc.
    Inventors: Marvin V. Manwaring, Ravindra Jwalapathy, Lee M. Tinnin, Ray G. Armstrong
  • Patent number: 7077432
    Abstract: The steering column assembly includes a housing having a longitudinal axis, a support member supported by the housing for movement about a shift axis, and a shift lever operatively connected to the support member and extending radially from the shift axis for shifting movement in a limited space. The present invention includes a break-away device having a shear container that extends through a translating bracket and the support member for limiting movement of the shift lever upwardly toward a parallel relationship with the shift axis and for releasing the shift lever for the movement toward the parallel relationship in response to a crash condition.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: July 18, 2006
    Assignee: Delphi Technologies, Inc.
    Inventors: Marvin V. Manwaring, Richard K. Riefe, Ravindra Jwalapathy, Ray G. Armstrong, Melvin L. Tinnin
  • Patent number: 7077433
    Abstract: An apparatus and method is provided for absorbing energy in a collapsible steering column. The energy absorbing device includes an anvil rotatable relative to a strap. The anvil defines a plurality of profiles corresponding to different rates of energy absorption. The plurality of profiles are radially adjacent to one another about the rotational axis of the anvil. The anvil can be rotated by explosive charges. For example, the anvil can define a follower portion and first and second explosive charges can be disposed on opposite sides of the follower portion.
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: July 18, 2006
    Assignee: Delphi Technologies, Inc.
    Inventors: Marvin V. Manwaring, Lee M. Tinnin, Ravindra Jwalapathy, Ray G. Armstrong
  • Publication number: 20060131863
    Abstract: The invention provides a steering column assembly (10) for a vehicle. The steering column assembly (10) includes first and second steering column members (12, 14) engaged for movement relative to one another along one of a tilting path (16) and a telescoping path. The steering column assembly (10) also includes an electric lock (18) operable in a locked configuration and an unlocked configuration to selectively lock the first and second steering column members (12, 14). When the electric lock (10) is in the locked configuration, the first and second steering column members (12, 14) are locked with respect to one another. When the electric lock (10) is in the unlocked configuration, the first and second steering column members (12, 14) are moveable with respect to one another. The steering column assembly (10) also includes a sensor (20) operable to sense a condition corresponding to a vehicle crash. The sensor (20) emits a signal corresponding to the condition.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 22, 2006
    Applicant: Delphi Technologies, Inc.
    Inventors: Richard Riefe, Minoo Shah, Ray Armstrong, Ravindra Jwalapathy
  • Patent number: 7055860
    Abstract: An electrically actuated steering column system that includes an electrically actuated steering column mechanism. A switch is interconnected with the electrically actuated steering column mechanism to allow for movement of a steering column housing relative to a driver. There is also included electrical control structure that regulates the electrically actuated steering column mechanism. The electrically actuated steering column system allows a driver to activate a switch and apply a force to initiate movement of the steering column housing and then deactivate the switch to halt movement and retain the steering column housing in a secure manner.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: June 6, 2006
    Assignee: Delphi Technologies, Inc.
    Inventors: Ray G. Armstrong, Richard K. Riefe, Ravindra Jwalapathy, Marvin V. Manwaring
  • Publication number: 20060033321
    Abstract: The invention provides a method an apparatus for dissipating energy associated with the telescopic collapse of two members, such as steering column members. The apparatus according to the invention includes first and second steering column members moveable relative to one another along a collapse path. At least one anvil is fixedly associated with one of said first and second steering column members. A strap extends along a bent path around the at least one anvil and includes first and second free ends. The apparatus also includes a lock device operative in a first condition to restrain one of the first and second free ends of said strap with respect to one of the first and second steering column members. The lock device is also operative in a second condition to release said one of said first and second free ends of said strap.
    Type: Application
    Filed: August 10, 2004
    Publication date: February 16, 2006
    Inventors: Marvin Manwaring, Richard Riefe, Ray Armstrong, Lee Tinnin, Ravindra Jwalapathy
  • Publication number: 20060005658
    Abstract: A locking device for selectively preventing telescoping movement between first and second members and tilting movement associated with the first and second members. The locking device includes an electric motor for generating a moving force. The locking device also includes a first locking portion associated with the electric motor to move between first locked and unlocked positions in response to the moving force. The first locking portion selectively prevents telescoping movement between the first and second members. The locking device also includes a second locking portion spaced from the first locking portion. The second locking portion is also associated with the electric motor to move between second locked and unlocked positions in response to the moving force. The second locking portion selectively prevents tilting movement associated with the first and second members.
    Type: Application
    Filed: July 2, 2004
    Publication date: January 12, 2006
    Inventors: Ray Armstrong, Philip McCarthy, Ravindra Jwalapathy