Patents by Inventor Manfred Glaser

Manfred Glaser 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: 4026169
    Abstract: An automotive transmission with three or four stages corresponding to as many forward speeds, established by the activation of respective hydraulic coupling elements via associated electrical valve-operating switches, includes an individual delay network in the energizing circuit of each valve-operating switch for modifying its response time in dependence on load and on the direction of shift. By this modification an upshift under load or a downshift under pull proceeds with substantially immediate activation of one coupling element upon deactivation of another coupling element, whereas under other circumstances (downshift under load or upshift under pull) an appreciable hiatus occurs between deactivation and activation to take advantage of the intervening speed change.
    Type: Grant
    Filed: July 3, 1975
    Date of Patent: May 31, 1977
    Assignee: Zahnradfabrik Friedrichshafen AG
    Inventors: Willi Kuhnle, Heinz Wendler, Manfred Glaser, Harald Breisch