Patents by Inventor Stephan Wehr

Stephan Wehr 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).

  • Publication number: 20080265054
    Abstract: An injector in which it is possible to switch a pressure booster on or off so that it is possible to control not only the injection duration, but also the progression of the injection pressure within a broad range during the injection.
    Type: Application
    Filed: May 9, 2006
    Publication date: October 30, 2008
    Inventors: Christoph Buehler, Juergen Frasch, Christoph Butscher, Michael Fleig, Stephan Wehr
  • Publication number: 20080121215
    Abstract: A fuel injector with an injector body is disclosed which has at least two separate function units that are largely independent of one another. The function units are reversibly joined to one another by a connecting element and at least one positioning pin. The two function units can be produced and tested separately, which greatly simplifies both the production process and maintenance of the fuel injectors and lessens the vulnerability of the fuel injectors to malfunction.
    Type: Application
    Filed: December 16, 2005
    Publication date: May 29, 2008
    Inventors: Juergen Frasch, Christoph Butscher, Michael Fleig, Stephan Wehr
  • Publication number: 20080110442
    Abstract: A fuel injector is disclosed in which at least one electrically-controlled valve is arranged within an injector body and is connected to an injector body contact which is accessible from outside by means of a solid conductor having an essentially stable form under the influence of its intrinsic weight. The at least one solid conductor is run through at least one conductor channel and at least one alignment sleeve which may be completely or partly inserted in at least one conductor channel and forces the at least one solid conductor completely or partly to adopt a given inclination to the injector axis and hence aligns the same.
    Type: Application
    Filed: December 14, 2005
    Publication date: May 15, 2008
    Inventors: Juergen Frasch, Christoph Butscher, Michael Fleig, Stephan Wehr
  • Patent number: 7121476
    Abstract: A fuel injection device, which has: a nozzle needle, guided displaceably in a nozzle body, which as a function of its position opens or closes at least one injection opening, in which a control chamber, to which fuel can be delivered under pressure via an inlet throttle and from which fuel can be diverted, controlled by a control valve, via an outlet throttle, is provided at a piston face of the nozzle needle facing away from the injection opening, and in which in operation, the position of the nozzle needle is controlled by a pressure difference between the pressure in the control chamber and the pressure of the fuel at the end, toward the injection opening, of the nozzle needle, is characterized in that the nozzle needle is surrounded, over at least part of its length, during operation by fuel at high pressure, such that only in the regions of the nozzle needle near the injection opening and in the control chamber can a lower pressure, differing from the high fuel pressure, occur.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: October 17, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Christoph Buehler, Juergen Frasch, Christoph Butscher, Michael Scheurer, Stephan Wehr
  • Publication number: 20060125231
    Abstract: A threaded pipe coupling is disclosed which comprises a connection stub, a pipe, and a union nut, and in which any leakage quantities that occur can be carried away through the union nut.
    Type: Application
    Filed: December 7, 2005
    Publication date: June 15, 2006
    Inventors: Juergen Frasch, Stephan Wehr
  • Publication number: 20060097067
    Abstract: A fuel injection device, which has: a nozzle needle, guided displaceably in a nozzle body, which as a function of its position opens or closes at least one injection opening, in which a control chamber, to which fuel can be delivered under pressure via an inlet throttle and from which fuel can be diverted, controlled by a control valve, via an outlet throttle, is provided at a piston face of the nozzle needle facing away from the injection opening, and in which in operation, the position of the nozzle needle is controlled by a pressure difference between the pressure in the control chamber and the pressure of the fuel at the end, toward the injection opening, of the nozzle needle, is characterized in that the nozzle needle is surrounded, over at least part of its length, during operation by fuel at high pressure, such that only in the regions of the nozzle needle near the injection opening and in the control chamber can a lower pressure, differing from the high fuel pressure, occur.
    Type: Application
    Filed: November 4, 2005
    Publication date: May 11, 2006
    Inventors: Christoph Buehler, Juergen Frasch, Christoph Butscher, Michael Scheurer, Stephan Wehr