Patents Examined by John O. Reep
  • Device for the control of shifting members of automatic change-speed transmissions
    Patent number: 3942393
    Abstract: A control system for regulating or controlling the actuating force of shifting elements which in automatically shifted change-speed transmissions act on friction elements that selectively brake, hold fast and release a structural element of such a change-speed transmission as a function of operating parameters; one of the operating parameters which is thereby used in the system of this invention is the predetermined change of the engine rotational speed as a function of time (dn/dt).
    Type: Grant
    Filed: May 12, 1972
    Date of Patent: March 9, 1976
    Assignee: Daimler-Benz Aktiengesellschaft
    Inventors: Hans-Joachim M. Forster, Georg Eltze, Hans Steinbrenner