Patents by Inventor Theodore E. Hojna

Theodore E. Hojna 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: 5431536
    Abstract: A torque converter stator has a plurality of blades integrally molded between inner and outer rim portions. The inner rim portion has an outer race of a one-way torque transmitting device integrally molded therewith. The outer race includes a plurality of cam surfaces and spring abutment surfaces for the one-way device which cooperate with roller, springs and an inner race which are later assembled therewith to complete the one-way torque transmitting device.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: July 11, 1995
    Assignee: General Motors Corporation
    Inventors: Robert R. By, Donald G. Maddock, Theodore E. Hojna
  • Patent number: 5226807
    Abstract: A torque converter turbine has a plastic bladed element molded around a sintered iron hub to form a substantially semi-toroidal structure. The hub provides ribs, apertures through the hub, and channels in which the plastic bladed element is disposed. Having the bladed element and hub thus engaged allows the bladed element and hub to sustain high torsional and axial loads at elevated temperatures without separating.
    Type: Grant
    Filed: July 20, 1992
    Date of Patent: July 13, 1993
    Assignee: General Motors Corporation
    Inventors: Robert R. By, Theodore E. Hojna
  • Patent number: 5120196
    Abstract: An impeller for a torque converter embodying the concepts of the present invention utilizes a substantially semi-toroidal shell. The shell has a radially inner periphery which defines an inlet portion and a radially outer periphery which defines an outlet portion. The shell is radially curved between the inlet portion and the outlet portion to define a concave annular recess. A plurality of full vanes and a plurality of splitter vanes are presented from the shell within the annular recess. The impeller vanes are disposed circumferentially about the concave recess at spaced intervals. Each vane has a leading head portion, an intermediate body portion and a trailing end portion. The leading head portions of both vanes are disposed in opposition to the inlet portion--the leading head portion of the full vanes being disposed in proximity to the inlet portion. The leading head portions of the splitter vanes are disposed in radially outwardly spaced relation to the inlet portion.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: June 9, 1992
    Assignee: General Motors Corporation
    Inventors: Robert R. By, Theodore E. Hojna