Patents by Inventor Andrew DERHAMMER

Andrew DERHAMMER 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).

  • Four-pass torque converter with variable-pitch stator and bypass clutch
    Patent number: 10895311
    Abstract: A torque converter includes a turbine disposed in a hydrodynamic chamber. A bypass clutch has an apply chamber fluidly isolated from the hydrodynamic chamber. A first hydraulic passage is in fluid communication with the apply chamber. A variable-pitch stator including blades controllable by an actuator that has a chamber in fluid communication with the first hydraulic passage.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: January 19, 2021
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Andrew Derhammer, Jeremy Vanni
  • Variable-pitch stator for torque converter
    Patent number: 10571004
    Abstract: A torque converter includes an impeller, a turbine, and a variable-pitch stator adjacent the turbine. The stator includes a hub and blades circumferentially arranged around the hub and pivotal between open and closed positions. The stator further includes an annular carrier connected to the blades and configured to rotate relative to the hub in response to pivoting of the blades, and a thrust disk engageable with the carrier to inhibit rotation of the carrier relative to the hub to maintain positions of the blades.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: February 25, 2020
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Andrew Derhammer
  • Spring retainer for arc spring of a clutch
    Patent number: 10520040
    Abstract: A disk assembly of a torque converter bypass clutch includes a disk defining a circular spring cavity and a plurality of arc springs circumferentially arranged in the cavity with gaps defined between adjacent ones of the arc springs. Each of the springs includes an end cap fitted on an end of the spring. Spring connectors are each disposed in one of the gaps and include an end received within a corresponding one of the end caps.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: December 31, 2019
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Jeremy Vanni, Andrew Derhammer
  • FOUR-PASS TORQUE CONVERTER WITH VARIABLE-PITCH STATOR AND BYPASS CLUTCH
    Publication number: 20190353235
    Abstract: A torque converter includes a turbine disposed in a hydrodynamic chamber. A bypass clutch has an apply chamber fluidly isolated from the hydrodynamic chamber. A first hydraulic passage is in fluid communication with the apply chamber. A variable-pitch stator including blades controllable by an actuator that has a chamber in fluid communication with the first hydraulic passage.
    Type: Application
    Filed: May 15, 2018
    Publication date: November 21, 2019
    Inventors: Andrew DERHAMMER, Jeremy VANNI
  • VARIABLE-PITCH STATOR FOR TORQUE CONVERTER
    Publication number: 20190353233
    Abstract: A torque converter includes an impeller, a turbine, and a variable-pitch stator adjacent the turbine. The stator includes a hub and blades circumferentially arranged around the hub and pivotal between open and closed positions. The stator further includes an annular carrier connected to the blades and configured to rotate relative to the hub in response to pivoting of the blades, and a thrust disk engageable with the carrier to inhibit rotation of the carrier relative to the hub to maintain positions of the blades.
    Type: Application
    Filed: May 15, 2018
    Publication date: November 21, 2019
    Inventor: Andrew DERHAMMER
  • SPRING RETAINER FOR ARC SPRING OF A CLUTCH
    Publication number: 20190154090
    Abstract: A disk assembly of a torque converter bypass clutch includes a disk defining a circular spring cavity and a plurality of arc springs circumferentially arranged in the cavity with gaps defined between adjacent ones of the arc springs. Each of the springs includes an end cap fitted on an end of the spring. Spring connectors are each disposed in one of the gaps and include an end received within a corresponding one of the end caps.
    Type: Application
    Filed: November 21, 2017
    Publication date: May 23, 2019
    Inventors: Jeremy VANNI, Andrew DERHAMMER