Patents by Inventor Leonel Barrera

Leonel Barrera 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: 9957852
    Abstract: A sprocket assembly which is either driven by a drive chain or which drives the drive chain includes a hub centered about a sprocket axis and defining a hub radially outer surface; a plurality of sprocket teeth extending radially outward from the hub; and a cushion ring assembly adjacent to the plurality of sprocket teeth and circumferentially surrounding the hub radially outer surface. The cushion ring assembly includes a cushion ring adjacent to the plurality of sprocket teeth and circumferentially surrounding the hub radially outer surface; the cushion ring being resilient and compliant. The cushion ring assembly also each includes a retention ring which is partially embedded within the cushion ring and which engages the hub radially outer surface in an interference fit, the retention ring providing axial and radial retention of the cushion ring to the hub.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: May 1, 2018
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Leonel A. Barrera, Cesar C. Chavez
  • Publication number: 20170356312
    Abstract: A sprocket assembly which is either driven by a drive chain or which drives the drive chain includes a hub centered about a sprocket axis and defining a hub radially outer surface; a plurality of sprocket teeth extending radially outward from the hub; and a cushion ring assembly adjacent to the plurality of sprocket teeth and circumferentially surrounding the hub radially outer surface. The cushion ring assembly includes a cushion ring adjacent to the plurality of sprocket teeth and circumferentially surrounding the hub radially outer surface; the cushion ring being resilient and compliant. The cushion ring assembly also each includes a retention ring which is partially embedded within the cushion ring and which engages the hub radially outer surface in an interference fit, the retention ring providing axial and radial retention of the cushion ring to the hub.
    Type: Application
    Filed: June 14, 2016
    Publication date: December 14, 2017
    Inventors: LEONEL A. BARRERA, CESAR C. CHAVEZ
  • Patent number: 8746279
    Abstract: A valve assembly includes a housing with a housing control bore, a supply port in selective fluid communication with the housing control bore for receiving working fluid from a working fluid source, a control port in fluid communication with the housing control bore for communicating the working fluid to and from a working device switchable from a first mode of operation to a second mode of operation at a predetermined pressure, and a vent port in fluid communication with the housing control bore for selectively returning the working fluid to the working fluid source. A supply valve member is selectively seated and unseat with a supply valve seat. A bleed orifice is provided for communicating the working fluid from the supply port to the control port at a second pressure that is less than the predetermined pressure when the supply valve member is seated with the supply valve seat.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: June 10, 2014
    Assignee: Delphi Technologies, Inc.
    Inventors: Guillermo Muzquiz, Jorge A. Campuzano, Leonel A. Barrera
  • Publication number: 20130061958
    Abstract: A valve assembly includes a housing with a housing control bore, a supply port in selective fluid communication with the housing control bore for receiving working fluid from a working fluid source, a control port in fluid communication with the housing control bore for communicating the working fluid to and from a working device switchable from a first mode of operation to a second mode of operation at a predetermined pressure, and a vent port in fluid communication with the housing control bore for selectively returning the working fluid to the working fluid source. A supply valve member is selectively seated and unseat with a supply valve seat. A bleed orifice is provided for communicating the working fluid from the supply port to the control port at a second pressure that is less than the predetermined pressure when the supply valve member is seated with the supply valve seat.
    Type: Application
    Filed: September 14, 2011
    Publication date: March 14, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: GUILLERMO MUZQUIZ, JORGE A. CAMPUZANO, LEONEL A. BARRERA
  • Patent number: 7322249
    Abstract: A robust, easy to mount probe sensor includes an elongated body enclosing a sensor element and an integral flange extending away from the body. The body and flange are formed of material having a relatively low characteristic yield point. First and second generally parallel closely spaced through passages extend through the flange. An insert formed of material having a relatively high characteristic yield point is disposed in one of the passages. A fastener including a shank portion which extends through the other passageway includes an enlarged head which overlays the insert containing passageway and engages an attachment structure to effect directed compressive loading of the probe sensor flange.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: January 29, 2008
    Assignee: Delphi Technologies, Inc.
    Inventors: Stephen G Paddock, Leonel A. Barrera
  • Publication number: 20070006661
    Abstract: A robust, easy to mount probe sensor includes an elongated body enclosing a sensor element and an integral flange extending away from the body. The body and flange are formed of material having a relatively low characteristic yield point. First and second generally parallel closely spaced through passages extend through the flange. An insert formed of material having a relatively high characteristic yield point is disposed in one of the passages. A fastener including a shank portion which extends through the other passageway includes an enlarged head which overlays the insert containing passageway and engages an attachment structure to effect directed compressive loading of the probe sensor flange.
    Type: Application
    Filed: July 7, 2005
    Publication date: January 11, 2007
    Inventors: Stephen Paddock, Leonel Barrera
  • Publication number: 20050044935
    Abstract: An integrated space-saving purge valve/pressure sensor assembly includes a purge valve connectable between a carbon canister and an engine intake that opens when the engine is running at speed and temperature to purge fuel vapor trapped in the canister. A pressure sensor is mounted on the valve housing and communicates with the interior of the housing through an orifice, such that the signal from the sensor represents the pressure in the purge system. The signal can be sent to the engine control module (ECM) for further processing.
    Type: Application
    Filed: August 26, 2003
    Publication date: March 3, 2005
    Inventors: Leonel Barrera, Bradley Farrenkopf