Patents by Inventor Ulrich Oppelt

Ulrich Oppelt 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).

  • Testing device for operation testing of a temperature sensor of an alarm or an alarm and a method of operation testing of an alarm
    Publication number: 20020021224
    Abstract: An operation testing of a temperature sensor of an alarm includes spraying so that the sprayable material is sprayable on the temperature sensor, a temperature decrease due to the spraying is detected, and an operation ability is determined in dependence on the testing.
    Type: Application
    Filed: August 20, 2001
    Publication date: February 21, 2002
    Inventors: Joachim Schneider, Anton Pfefferseder, Bernd Siber, Andreas Hensel, Ulrich Oppelt
  • Smoke detector
    Patent number: 6239710
    Abstract: A smoke alarm on the scattered radiation principle. Having a measuring field (5), accessible to smoke particles, in a measuring chamber, at which field the radiation direction of a radiation transmitter (6) is aimed, and scattered radiation occurring in the measuring field (5) can be received by a radiation receiver (7); the measuring chamber includes a portion of the hollow ellipsoid (3) which is mirror-coated on the inside; the measuring field (5) is disposed at the first focal point (1) of the hollow ellipsoid; the radiation receiver (7) is disposed at the second focal point (2) of the hollow ellipsoid (3).
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: May 29, 2001
    Assignee: Robert Bosch GmbH
    Inventor: Ulrich Oppelt