Patents by Inventor Matthias Haefele

Matthias Haefele 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).

  • Tank venting system and method for diagnosing same
    Patent number: 9551304
    Abstract: A tank venting system of an internal combustion engine having an intake manifold, a fuel tank, and an activated carbon filter includes: a tank vent valve; at least one check valve; and a pressure sensor situated between the tank vent valve and the check valve. For diagnosing this tank venting system, a negative pressure which is lower than the ambient pressure outside the engine system is stored between the tank vent valve and the check valve. The stored pressure is changed by controlling the tank vent valve, and the change in the pressure is measured via the pressure sensor. The functioning of the tank venting line, of the check valve, and of the tank vent valve is deduced from the correlation of the opening state of the tank vent valve with the change in pressure.
    Type: Grant
    Filed: September 19, 2012
    Date of Patent: January 24, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventor: Matthias Haefele
  • Extraction apparatus with grease collection channel
    Patent number: 8915982
    Abstract: An extraction apparatus includes at least one filter and a grease collection channel, wherein the grease collection channel has a number of removable troughs, which support the at least one filter. The troughs can be arranged flush with one another in a holder Each of the troughs has a handle, which has at least one air through-flow opening.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: December 23, 2014
    Assignee: BSH Bosch und Siemens Hausgeraete GmbH
    Inventors: Matthias Haefele, Jochen Klemm, Ulmar Neumann
  • TANK VENTING SYSTEM AND METHOD FOR DIAGNOSING SAME
    Publication number: 20140345574
    Abstract: A tank venting system of an internal combustion engine having an intake manifold, a fuel tank, and an activated carbon filter includes: a tank vent valve; at least one check valve; and a pressure sensor situated between the tank vent valve and the check valve. For diagnosing this tank venting system, a negative pressure which is lower than the ambient pressure outside the engine system is stored between the tank vent valve and the check valve. The stored pressure is changed by controlling the tank vent valve, and the change in the pressure is measured via the pressure sensor. The functioning of the tank venting line, of the check valve, and of the tank vent valve is deduced from the correlation of the opening state of the tank vent valve with the change in pressure.
    Type: Application
    Filed: September 19, 2012
    Publication date: November 27, 2014
    Inventor: Matthias Haefele
  • EXTRACTION APPARATUS WITH GREASE COLLECTION CHANNEL
    Publication number: 20140053518
    Abstract: An extraction apparatus includes at least one filter and a grease collection channel, wherein the grease collection channel has a number of removable troughs, which support the at least one filter. The troughs can be arranged flush with one another in a holder Each of the troughs has a handle, which has at least one air through-flow opening.
    Type: Application
    Filed: August 23, 2013
    Publication date: February 27, 2014
    Applicant: BSH Bosch und Siemens Hausgerate GmbH
    Inventors: Matthias Haefele, Jochen Klemm, Ulmar Neumann