Patents by Inventor Patrick Benedict Usoro

Patrick Benedict Usoro 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: 6648792
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least seven forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having six torque-transmitting mechanisms and two fixed interconnections. Also, one planetary gear member is continuously connected with the transmission housing. The powertrain includes an engine and torque converter that is not continuously connected to any of the planetary gear members and an output member that is continuously connected with at least one of the planetary gear members. The six torque-transmitting mechanisms provide interconnections between various gear members and with the input shaft, output shaft, and transmission housing, and are operated in combinations of three to establish at least seven forward speed ratios and one reverse speed ratio.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: November 18, 2003
    Assignee: General Motors Corporation
    Inventors: Patrick Benedict Usoro, Madhusudan Raghavan, Norman Kenneth Bucknor
  • Patent number: 6645116
    Abstract: A family of transmissions has a plurality of members each of which includes three planetary gearsets, five torque-transmitting mechanisms, an input shaft, and an output shaft. The torque-transmitting mechanisms are selectively engageable in combinations of three to establish at least six forward speed ratios and one reverse speed ratio between the input shaft and the output shaft of each family member. Each family member has two continuous interconnecting members, one of which interconnects a member the first planetary gearset with a member of the second planetary gearset, and the second of which connects another member of the second planetary gearset with a member of the third planetary gearset. The five torque-transmitting mechanisms complete the connections between the planetary gear members and/or the transmission housing which are necessary to provide the six forward speed ratios and one reverse speed ratio.
    Type: Grant
    Filed: April 26, 2002
    Date of Patent: November 11, 2003
    Assignee: General Motors Corporation
    Inventors: Patrick Benedict Usoro, Norman Kenneth Bucknor, Chunhao J. Lee, Madhusudan Raghavan
  • Patent number: 6645115
    Abstract: A family of power transmissions which are utilized in a powertrain include three planetary gearsets and five torque-transmitting mechanisms. The torque-transmitting mechanisms are engaged in combinations of three to provide a reverse drive ratio and six forward speed ratios. The torque-transmitting mechanisms will include at least four rotating type torque-transmitting mechanisms and, in some instances, one stationary type torque-transmitting mechanism. The planetary gearsets are of either the single pinion type or of the double pinion type of planetary gearsets.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: November 11, 2003
    Assignee: General Motors Corporation
    Inventors: Patrick Benedict Usoro, Chi-Kuan Kao, Madhusudan Raghavan
  • Patent number: 6645118
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least five forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets and four clutches. The powertrain includes an engine and torque converter that is continuously connected to at least one member of the planetary gear arrangement and an output member that is continuously connected with another of the planetary gear members. At least one member of the first and second planetary gear sets is continuously connected with the transmission housing. The four clutches provide interconnections between various gear members and with the input and the output shaft, and are operated in combinations of two to establish at least five forward speed ratios and one reverse speed ratio.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: November 11, 2003
    Assignee: General Motors Corporation
    Inventors: Norman Kenneth Bucknor, Madhusudan Raghavan, Patrick Benedict Usoro
  • Patent number: 6645117
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least seven forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets and six torque-transmitting mechanisms. The powertrain includes an engine and torque converter that is continuously connected to at least one member of the planetary gear arrangement and an output member that is continuously connected with another of the planetary gear members. A fixed interconnection is provided between a member of the first planetary gear set and a member of the second planetary gear set. The six torque-transmitting mechanisms provide interconnections between various gear members and with the transmission housing, and are operated in combinations of four to establish at least seven forward speed ratios and one reverse speed ratio.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: November 11, 2003
    Assignee: General Motors Corporation
    Inventors: Patrick Benedict Usoro, Madhusudan Raghavan, Norman Kenneth Bucknor
  • Publication number: 20030203784
    Abstract: A family of transmissions has a plurality of members each of which includes three planetary gearsets, five torque-transmitting mechanisms, an input shaft, and an output shaft. The torque-transmitting mechanisms are selectively engageable in combinations of three to establish at least six forward speed ratios and one reverse speed ratio between the input shaft and the output shaft of each family member. Each family member has two continuous interconnecting members, one of which interconnects a member the first planetary gearset with a member of the second planetary gearset, and the second of which connects another member of the second planetary gearset with a member of the third planetary gearset. The five torque-transmitting mechanisms complete the connections between the planetary gear members and/or the transmission housing which are necessary to provide the six forward speed ratios and one reverse speed ratio.
    Type: Application
    Filed: April 26, 2002
    Publication date: October 30, 2003
    Inventors: Patrick Benedict Usoro, Norman Kenneth Bucknor, Chunhao J. Lee, Madhusudan Raghavan
  • Publication number: 20030203787
    Abstract: A family of power transmissions includes three planetary gearsets, each of which has three members, and six torque-transmitting mechanisms, which are selectively engageable to establish at least seven forward speed ratios and one reverse speed ratio between a transmission input shaft and a transmission output shaft. Each of the family members has a first member of the first planetary gearset continuously interconnected with a first member of the second planetary gearset, a second member of the second planetary gearset continuously interconnected with a first member of the third planetary gearset, and a second member of the first planetary gearset continuously interconnected with either a third member of the second planetary gearset or a second member of the third planetary gearset. One member of the first planetary gearset is continuously interconnected with a transmission housing, and a transmission output shaft is continuously interconnected with at least one member of one the planetary gearsets.
    Type: Application
    Filed: April 26, 2002
    Publication date: October 30, 2003
    Inventors: Patrick Benedict Usoro, Norman Kenneth Bucknor, Chunhao J. Lee, Madhusudan Raghavan
  • Publication number: 20030203786
    Abstract: A family of six-speed planetary transmissions incorporates three planetary gearsets and five torque-transmitting mechanisms to produce at least six forward speed ratios and one reverse speed ratio. The planetary gearsets are interconnected with three interconnecting members. The first of the interconnecting members continuously interconnects a first member of each of the first and second planetary gearsets, a second of the interconnecting members continuously interconnects a second member of each of the first and second planetary gearsets, and a third of the interconnecting members continuously interconnects a member of the second planetary gearset with a member of the third planetary gearset. The output shaft is continuously interconnected with at least one member of the planetary gearsets. The transmission input shaft is selectively connectible with members of the planetary gearsets through at least two of the five torque-transmitting mechanisms.
    Type: Application
    Filed: April 26, 2002
    Publication date: October 30, 2003
    Inventors: Norman Kenneth Bucknor, Madhusudan Raghavan, Patrick Benedict Usoro
  • Publication number: 20030203785
    Abstract: A family of power transmissions includes three planetary gearsets and five torque-transmitting mechanisms that are selectively engaged to produce at least six forward speed ratios and one reverse speed ratio between an input shaft and an output shaft. The planetary gearsets are arranged such that a member of the first of the planetary gearsets is continuously interconnected with a member of the second planetary gearset, and a member of the second planetary gearset is continuously interconnected with a member of the third planetary gearset. At least one member of either the first or second planetary gearset is continuously connected with a transmission housing and at least one member of one of the planetary gearsets is connected with the transmission output shaft. The transmission input shaft is selectively connectible with the planetary gearsets only through at least two rotating type torque-transmitting mechanisms.
    Type: Application
    Filed: April 26, 2002
    Publication date: October 30, 2003
    Inventors: Patrick Benedict Usoro, Madhusudan Raghavan, Norman Kenneth Bucknor
  • Patent number: 6634981
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least seven forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having six torque-transmitting mechanisms and one fixed interconnection. Also, one planetary gear member is continuously connected with the transmission housing. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting mechanisms provide interconnections between various gear members and with the transmission housing, and are operated in combinations of three to establish at least seven forward speed ratios and one reverse speed ratio.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: October 21, 2003
    Assignee: General Motors Corporation
    Inventors: Madhusudan Raghavan, Norman Kenneth Bucknor, Patrick Benedict Usoro
  • Publication number: 20030195078
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least seven forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having six torque-transmitting mechanisms and two fixed interconnections. Also, one planetary gear member is continuously connected with the transmission housing. The powertrain includes an engine and torque converter that is not continuously connected to any of the planetary gear members and an output member that is continuously connected with at least one of the planetary gear members. The six torque-transmitting mechanisms provide interconnections between various gear members and with the input shaft, output shaft, and transmission housing, and are operated in combinations of three to establish at least seven forward speed ratios and one reverse speed ratio.
    Type: Application
    Filed: April 16, 2002
    Publication date: October 16, 2003
    Inventors: Patrick Benedict Usoro, Madhusudan Raghavan, Norman Kenneth Bucknor
  • Publication number: 20030195079
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least seven forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having six torque-transmitting mechanisms and one fixed interconnection. Also, one planetary gear member is continuously connected with the transmission housing. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting mechanisms provide interconnections between various gear members and with the transmission housing, and are operated in combinations of three to establish at least seven forward speed ratios and one reverse speed ratio.
    Type: Application
    Filed: April 16, 2002
    Publication date: October 16, 2003
    Inventors: Madhusudan Raghavan, Norman Kenneth Bucknor, Patrick Benedict Usoro
  • Patent number: 6632153
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least five forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets and four clutches. The powertrain includes an engine and torque converter that is continuously connected to at least one member of the third planetary gear set and an output member that is continuously connected with another of the third planetary gear set. A member of the first planetary gear set is continuously connected with the transmission housing. The four clutches provide interconnections between various gear members, interconnecting members, and with the input and the output shaft, and are operated in combinations of two to establish at least five forward speed ratios.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: October 14, 2003
    Assignee: General Motors Corporation
    Inventors: Madhusudan Raghavan, Norman Kenneth Bucknor, Patrick Benedict Usoro
  • Patent number: 6626789
    Abstract: A family of multi-speed power transmissions included in powertrains having an engine and a final drive, wherein each transmission family member includes three planetary gearsets and five torque-transmitting mechanisms. The torque-transmitting mechanisms are engaged in combinations of two to establish a reverse drive ratio and six forward speed ratios between an input shaft and an output shaft. The torque-transmitting mechanisms include three rotating type torque-transmitting mechanisms and two stationary type torque-transmitting mechanisms. The three planetary gearsets include two continuously connected links between members of the first two planetary gearsets and one continuously connecting link between the second and third planetary gearsets. Each of the planetary gearsets may be either of the single pinion type or of the double pinion type of planetary gearset.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: September 30, 2003
    Assignee: General Motors Corporation
    Inventors: Madhusudan Raghavan, Patrick Benedict Usoro
  • Patent number: 6626791
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least five forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets, and four torque transmitting mechanisms. The fourth torque transmitting mechanism may be either a brake or a fourth clutch. The powertrain includes an engine and torque converter that is continuously connected to at least one member of the planetary gear arrangement and an output member that is continuously connected with another of the planetary gear members. At least one other planetary gear member is continuously connected with the transmission housing. The three clutches and torque transmitting mechanism provide interconnections between various gear members and with the input, the output shaft, or the transmission housing, in some instances, and are operated in combinations of two to establish at least five forward speed ratios.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: September 30, 2003
    Assignee: General Motors Corporation
    Inventors: Madhusudan Raghavan, Chunhao J. Lee, Patrick Benedict Usoro
  • Patent number: 6626790
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least five forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets, two clutches and two brakes. The powertrain includes an engine and torque converter that is continuously connected with at least one member of the third planetary gear set and an output member that is continuously connected with another member of the third planetary gear set. The two clutches and two brakes provide interconnections between various gear members, the transmission housing, and with the input and the output shaft, and are operated in combinations of two to establish at least five forward speed ratios and one reverse speed ratio.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: September 30, 2003
    Assignee: General Motors Corporation
    Inventors: Madhusudan Raghavan, Chunhao J. Lee, Patrick Benedict Usoro
  • Patent number: 6623398
    Abstract: A family of transmissions has three planetary gear sets controlled by five torque transmitting mechanisms that are selectively operable to provide six forward speed ratios and a reverse ratio between an input shaft and an output shaft. The planetary gear sets may be of the single or double pinion gear type and each include three members such as a sun gear member, a ring gear member and a planet carrier assembly member. First and second members of the first planetary gear set are continuously connected with respective first and second members of the second planetary gear set. A first member of the third planetary gear set is continuously connected to a stationary component. The input shaft is continuously connected to at least one member of one of the planetary gear sets and the output shaft is connected to at least one member of one of the planetary gear sets.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: September 23, 2003
    Assignee: General Motors Corporation
    Inventors: Madhusudan Raghavan, Chi-Kuan Kao, Patrick Benedict Usoro
  • Patent number: 6623397
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least seven forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having six torque-transmitting mechanisms. The powertrain includes an engine and torque converter that is continuously connected to at least one member of the planetary gear arrangement and an output member that is continuously connected with another of the planetary gear members. One planetary gear member is continuously connected with the transmission housing. The six torque-transmitting mechanisms provide interconnections between various gear members and with the transmission housing, and are operated in combinations of four to establish at least seven forward speed ratios and one reverse speed ratio.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: September 23, 2003
    Assignee: General Motors Corporation
    Inventors: Madhusudan Raghavan, Norman Kenneth Bucknor, Patrick Benedict Usoro
  • Patent number: 6620075
    Abstract: A family of power transmissions have three planetary gearsets each of which have first, second, and third members. A pair of fixed interconnecting members establish continuous connections between a member of the first planetary gearset and a member of the second planetary gearset, and between another member of the second planetary gearset and a member of the third planetary gearset, respectively. Each of the transmission family members has an output shaft, which is continuously connected with at least one member of one of the planetary gearsets and an input shaft, which is selectively connectible with at least two members of the planetary gearsets through respective first and second torque-transmitting mechanisms. Four other torque-transmitting mechanisms are provided to establish various interconnections between members of the planetary gearsets and/or members of the planetary gearsets and the transmission housing.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: September 16, 2003
    Assignee: General Motors Corporation
    Inventors: Chi-Kuan Kao, Madhusudan Raghavan, Patrick Benedict Usoro, Chunhao J. Lee, Norman Kenneth Bucknor
  • Publication number: 20030162626
    Abstract: The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least five forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets, two clutches and two brakes. The powertrain includes an engine and torque converter that is continuously connected with at least one member of the third planetary gear set and an output member that is continuously connected with another member of the third planetary gear set. The two clutches and two brakes provide interconnections between various gear members, the transmission housing, and with the input and the output shaft, and are operated in combinations of two to establish at least five forward speed ratios and one reverse speed ratio.
    Type: Application
    Filed: February 25, 2002
    Publication date: August 28, 2003
    Inventors: Madhusudan Raghavan, Chunhao J. Lee, Patrick Benedict Usoro