Patents by Inventor Sergio R. Marin

Sergio R. Marin 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).

  • Publication number: 20190040952
    Abstract: A multi-speed transmission includes a shaft member, an idler gear connected to the shaft member, an intermediate lever having a first movement and a second movement, the intermediate lever selectively engaging with the shaft member during the first movement and remaining engaged with the shaft member during the second movement, and a synchronizer assembly that is selectively engaged by the intermediate lever during the first movement of the intermediate lever, the synchronizer assembly remaining engaged during an initial stage of the second movement of the intermediate lever and becoming unengaged during a final stage of the second movement of the intermediate lever, the idler gear being fully engaged to achieve a reverse gear ratio during the final stage of the second movement of the intermediate lever.
    Type: Application
    Filed: August 2, 2017
    Publication date: February 7, 2019
    Inventors: Ricardo C. Furquim, Alexander A. Almeida, Iuri C. Portillo, Luiz H. Bellatini Fo, Sergio R. Marin
  • Patent number: 8567582
    Abstract: A synchronizer assembly includes a synchronizer sleeve that engages a first gearwheel of the transmission. The synchronizer sleeve and the first gearwheel are rotatable about a shaft, and the synchronizer sleeve is axially moveable along the shaft. The synchronizer assembly further includes a synchronizer ring that contacts a second gearwheel of the transmission to selectively engage the synchronizer sleeve. The synchronizer ring includes a synchronizer spring that selectively abuts the second gearwheel to push the synchronizer ring against the synchronizer sleeve, and a plurality of lugs that engage the second gearwheel. The synchronizer spring is retained on the plurality of lugs.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: October 29, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Renato Freitas Silva, Edmar Jose Pereira Gomes, Sergio R. Marin, Leandro V. Alencar
  • Publication number: 20120145507
    Abstract: A synchronizer assembly includes a synchronizer sleeve that engages a first gearwheel of the transmission. The synchronizer sleeve and the first gearwheel are rotatable about a shaft, and the synchronizer sleeve is axially moveable along the shaft. The synchronizer assembly further includes a synchronizer ring that contacts a second gearwheel of the transmission to selectively engage the synchronizer sleeve. The synchronizer ring includes a synchronizer spring that selectively abuts the second gearwheel to push the synchronizer ring against the synchronizer sleeve, and a plurality of lugs that engage the second gearwheel. The synchronizer spring is retained on the plurality of lugs.
    Type: Application
    Filed: December 14, 2010
    Publication date: June 14, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Renato Freitas Silva, Edmar Jose Pereira Gomes, Sergio R. Marin, Leandro V. Alencar