Patents by Inventor James A. Raszkowski
James A. Raszkowski 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).
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Publication number: 20130248029Abstract: An apparatus for axially transferring fluid may comprise an elongated shaft defining a first fluid passageway axially therethrough and a second fluid passageway from an outer surface thereof to the first fluid passageway. An elongated tube member defines an outer surface that is received within the first fluid passageway and a third fluid passageway axially therethrough. A plurality of axial channels are defined between the tube member and the first fluid passageway or along the tube member separately from the third fluid passageway. At least one of the plurality of axial channels define a first opening near one end thereof that receives fluid from a source of fluid and a second opening axially spaced apart from the first opening and that aligns with the second fluid passageway such that fluid may be transferred by the at least one fluid passageway from the source of fluid through the second fluid passageway.Type: ApplicationFiled: May 14, 2013Publication date: September 26, 2013Inventors: Mark L. Anderson, James A. Raszkowski, James A. Redelman
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Patent number: 8439083Abstract: An apparatus for axially transferring fluid may comprise an elongated shaft defining a first fluid passageway axially therethrough and a second fluid passageway from an outer surface thereof to the first fluid passageway. An elongated tube member defines an outer surface that is received within the first fluid passageway and a third fluid passageway axially therethrough. A plurality of axial channels are defined between the tube member and the first fluid passageway or along the tube member separately from the third fluid passageway. At least one of the plurality of axial channels define a first opening near one end thereof that receives fluid from a source of fluid and a second opening axially spaced apart from the first opening and that aligns with the second fluid passageway such that fluid may be transferred by the at least one fluid passageway from the source of fluid through the second fluid passageway.Type: GrantFiled: May 3, 2011Date of Patent: May 14, 2013Assignee: Allison Transmission, Inc.Inventors: Mark L. Anderson, James A. Raszkowski, James A. Redelman
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Patent number: 8398519Abstract: A transmission includes an input member, an output member, and an intermediate member coaxially aligned with the input member and the output member. The transmission further includes at least one countershaft substantially parallel with the input member, output member and the intermediate member, and at least one gear associated with each of the input member, the output member, intermediate member, at least one countershaft. The transmission also includes a planetary gear set to operatively couple a gear of the at least one gear associated with the intermediate shaft with the output shaft, and a plurality of clutches to selectively define a torque transfer path from the input member to the output member via one or more of the intermediate member, first countershaft, second countershaft, and the at least one associated gears therewith. The plurality of clutches include a direct drive clutch to selectively couple the input member directly to the intermediate member.Type: GrantFiled: March 26, 2012Date of Patent: March 19, 2013Assignee: Allison Transmission, Inc.Inventor: James A. Raszkowski
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Publication number: 20120181135Abstract: A mode shift assembly for a transmission comprises has a first side coupled to a rotational input, a second side coupled to a rotational output, and an actuator. The actuator acts on the first side to move the first side between a first position in which the first and second engagement surfaces are disengaged and a second position. In the first position, rotation between the first and second sides is independent. In the second position, the first and second engagement surfaces are engaged such that rotation is transferred from the first side to the second side.Type: ApplicationFiled: October 18, 2011Publication date: July 19, 2012Inventor: James A. RASZKOWSKI
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Publication number: 20120180585Abstract: A transmission includes an input member, an output member, and an intermediate member coaxially aligned with the input member and the output member. The transmission further includes at least one countershaft substantially parallel with the input member, output member and the intermediate member, and at least one gear associated with each of the input member, the output member, intermediate member, at least one countershaft. The transmission also includes a planetary gear set to operatively couple a gear of the at least one gear associated with the intermediate shaft with the output shaft, and a plurality of clutches to selectively define a torque transfer path from the input member to the output member via one or more of the intermediate member, first countershaft, second countershaft, and the at least one associated gears therewith. The plurality of clutches include a direct drive clutch to selectively couple the input member directly to the intermediate member.Type: ApplicationFiled: March 26, 2012Publication date: July 19, 2012Inventor: James A. RASZKOWSKI
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Publication number: 20120122624Abstract: The present invention provides an infinitely variable transmission for a powered vehicle which includes a power source. The transmission includes an input shaft and an output shaft, the output shaft being spaced from the input shaft. The transmission further includes a variator coupled between the input shaft and output shaft. In addition, at least two planetary gearsets are disposed adjacent to the variator and an input coupler is configured to selectively couple the variator to the power source.Type: ApplicationFiled: September 9, 2011Publication date: May 17, 2012Inventors: Glen S. Hawkins, JR., Brian Schoolcraft, James A. Raszkowski, David E. Earhart, Gary Reichanadter
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Patent number: 8142322Abstract: A transmission includes an input member, an output member, and an intermediate member coaxially aligned with the input member and the output member. The transmission further includes at least one countershaft substantially parallel with the input member, output member and the intermediate member, and at least one gear associated with each of the input member, the output member, intermediate member, at least one countershaft. The transmission also includes a planetary gear set to operatively couple a gear of the at least one gear associated with the intermediate shaft with the output shaft, and a plurality of clutches to selectively define a torque transfer path from the input member to the output member via one or more of the intermediate member, first countershaft, second countershaft, and the at least one associated gears therewith. The plurality of clutches include a direct drive clutch to selectively couple the input member directly to the intermediate member.Type: GrantFiled: May 1, 2008Date of Patent: March 27, 2012Assignee: Allison Transmission, Inc.Inventor: James A. Raszkowski
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Publication number: 20110290361Abstract: An apparatus for axially transferring fluid may comprise an elongated shaft defining a first fluid passageway axially therethrough and a second fluid passageway from an outer surface thereof to the first fluid passageway. An elongated tube member defines an outer surface that is received within the first fluid passageway and a third fluid passageway axially therethrough. A plurality of axial channels are defined between the tube member and the first fluid passageway or along the tube member separately from the third fluid passageway. At least one of the plurality of axial channels define a first opening near one end thereof that receives fluid from a source of fluid and a second opening axially spaced apart from the first opening and that aligns with the second fluid passageway such that fluid may be transferred by the at least one fluid passageway from the source of fluid through the second fluid passageway.Type: ApplicationFiled: May 3, 2011Publication date: December 1, 2011Inventors: Mark L. Anderson, James A. Raszkowski, James A. Redelman
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Patent number: 8038564Abstract: A transmission is provided having an input member, an output member, a dual clutch assembly, two countershaft gearing arrangements, one planetary gear set, a plurality of interconnecting members, and a plurality of torque transmitting devices. Each of the countershaft gearing arrangements includes a plurality of co-planar gear sets. The torque transmitting devices include a combination of clutches, brakes, and synchronizers.Type: GrantFiled: January 18, 2011Date of Patent: October 18, 2011Assignee: GM Global Technology Operations LLCInventors: David Earl Earhart, James A. Raszkowski
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Publication number: 20110118074Abstract: A transmission is provided having an input member, an output member, a dual clutch assembly, two countershaft gearing arrangements, one planetary gear set, a plurality of interconnecting members, and a plurality of torque transmitting devices. Each of the countershaft gearing arrangements includes a plurality of co-planar gear sets. The torque transmitting devices include a combination of clutches, brakes, and synchronizers.Type: ApplicationFiled: January 18, 2011Publication date: May 19, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: David Earl Earhart, James A. Raszkowski
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Patent number: 7896770Abstract: A transmission is provided having an input member, an output member, a dual clutch assembly, two countershaft gearing arrangements, one planetary gear set, a plurality of interconnecting members, and a plurality of torque transmitting devices. Each of the countershaft gearing arrangements includes a plurality of co-planar gear sets. The torque transmitting devices include a combination of clutches, brakes, and synchronizers.Type: GrantFiled: August 1, 2007Date of Patent: March 1, 2011Assignee: GM Global Technology Operations LLCInventors: David Earl Earhart, James A. Raszkowski
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Patent number: 7832298Abstract: A low inertia clutch and gear assembly for disposition on a countershaft of a dual clutch automatic transmission (DCT) includes a gear which is in constant mesh with a gear secured to the input shaft of the transmission and which is freely rotatably disposed on one of the countershafts or lay shafts. The lower inertia components of the clutch, i.e., the clutch hub and the smaller diameter friction plates are secured to the countershaft whereas the higher inertia components, i.e., the clutch housing, the larger diameter friction plates, the reaction plate, the piston and the return springs, rotate with the gear.Type: GrantFiled: July 19, 2007Date of Patent: November 16, 2010Assignee: GM Global Technology Operations, Inc.Inventor: James A. Raszkowski
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Patent number: 7810622Abstract: A transmission includes first and second clutch members rotatable about the same axis. An axial groove is formed in one of the members to distribute lubricating fluid to the other member. Preferably, clutch plates with radial grooves extend between the clutch members. Fluid flows from the axial groove through the radial groove and across faces of the clutch plates to separate the plates during disengagement in order to minimize spin losses.Type: GrantFiled: February 17, 2005Date of Patent: October 12, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Michael D. Foster, Joel E. Mowatt, Gregory W. Kempf, James A. Raszkowski
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Patent number: 7802667Abstract: An assembly and method is provided for reducing clutch wear due to centrifugal apply pressure within a clutch-apply cavity. The assembly comprises a rotatable clutch housing, a clutch-apply piston disposed within a clutch-apply cavity, and a balance piston. The balance and apply pistons define a balance cavity including a liquid fill channel and a dedicated air exhaust channel having a control radius configured to at least partially offset or compensate for the centrifugal apply force generated within the clutch-apply cavity when the clutch assembly rotates. The method includes configuring the balance cavity with an exhaust channel for exhausting fluid, and providing the exhaust channel with a control radius determined by the innermost radius of rotating fluid within the balance cavity as measured with respect to the centerline of rotation of the clutch assembly, the control radius being suitable for exhausting any excess of centrifugal balance force over centrifugal apply force.Type: GrantFiled: March 14, 2007Date of Patent: September 28, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James A. Raszkowski, Michael D. Foster, Kevin C. Beckner
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Publication number: 20090283381Abstract: A sliding clutch assembly for selectively rotatingly coupling a first shaft or member to a second shaft or member includes a piston housed within the first member. The piston is rotatingly coupled to the first member. The piston is moveable between two positions. In the first position, the piston does not engage the second member. In the second position, a feature on the piston engages a feature on the second member such that the piston is rotatingly coupled to both the first member and the second member.Type: ApplicationFiled: March 27, 2009Publication date: November 19, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: James A. Raszkowski
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Publication number: 20090272212Abstract: A transmission includes an input member, an output member, and an intermediate member coaxially aligned with the input member and the output member. The transmission further includes at least one countershaft substantially parallel with the input member, output member and the intermediate member, and at least one gear associated with each of the input member, the output member, intermediate member, at least one countershaft. The transmission also includes a planetary gear set to operatively couple a gear of the at least one gear associated with the intermediate shaft with the output shaft, and a plurality of clutches to selectively define a torque transfer path from the input member to the output member via one or more of the intermediate member, first countershaft, second countershaft, and the at least one associated gears therewith. The plurality of clutches include a direct drive clutch to selectively couple the input member directly to the intermediate member.Type: ApplicationFiled: May 1, 2008Publication date: November 5, 2009Inventor: James A. Raszkowski
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Patent number: 7586225Abstract: A hybrid transmission includes two electric motor modules and a plurality of planetary gear sets operatively connectable to the motor modules and to an engine. The motor modules each include integral wire connections such that as the motor modules are physically inserted into the hybrid transmission during assembly, the electrical connections may be easily established.Type: GrantFiled: February 17, 2005Date of Patent: September 8, 2009Assignee: GM Global Technology Operations, Inc.Inventors: James A. Raszkowski, Edward L. Kaiser, Anthony P. Tata, Kyle K. Kinsey, Joel E. Mowatt, William S. Reed
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Patent number: 7493999Abstract: This invention relates to the housing of a hybrid electro-mechanical transmission consisting of park pawl system located in the end cover portion of the transmission housing. The end cover portion is configured to cover the park pawl system and allow access to the components of the park pawl system for assembly or service even as the end cover portion remains attached to the main housing of the transmission. Beyond providing coverage to the park pawl system, the end cover portion also provides structural support to a main housing portion during operation of the transmission. A method of assembling a park pawl system between main and end cover portions of a transmission housing is also provided.Type: GrantFiled: January 21, 2005Date of Patent: February 24, 2009Assignee: General Motors CorporationInventors: William S. Reed, James A. Raszkowski, Joel E. Mowatt, Bert D. Love, Rick K. Daugherty
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Publication number: 20090036247Abstract: A transmission is provided having an input member, an output member, a dual clutch assembly, two countershaft gearing arrangements, one planetary gear set, a plurality of interconnecting members, and a plurality of torque transmitting devices. Each of the countershaft gearing arrangements includes a plurality of co-planar gear sets. The torque transmitting devices include a combination of clutches, brakes, and synchronizers.Type: ApplicationFiled: August 1, 2007Publication date: February 5, 2009Inventors: David Earl Earhart, James A. Raszkowski
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Publication number: 20090019959Abstract: The present invention provides a low inertia clutch and gear assembly for disposition on a countershaft of a dual clutch automatic transmission (DCT). The assembly includes a gear which is in constant mesh with a gear secured to the input shaft of the transmission and which is freely rotatably disposed on one of the countershafts or lay shafts. The lower inertia components of the clutch, i.e., the clutch hub and the smaller diameter friction plates are secured to the countershaft whereas the higher inertia components, i.e., the clutch housing, the larger diameter friction plates, the reaction plate, the piston and the return springs, rotate with the gear.Type: ApplicationFiled: July 19, 2007Publication date: January 22, 2009Inventor: James A. Raszkowski