Patents by Inventor Hansjurg Waelti

Hansjurg Waelti 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).

  • Flashlight for alarm systems
    Patent number: 8217580
    Abstract: A flashlight for alarm systems includes a light source containing at least one light emitting diode and a circuit which controls said light source. The circuit has a feed supply, a current converter, and flash control device. The current converter, the light source, and the flash control device are connected in series. The current converter includes a control unit, an inductor, an induction stop, and a resistor which are connected in series. The flash control device includes at least one switch for actuating the light source and a microprocessor for controlling the at least one switch.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: July 10, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Max Grimm, Kurt Müller, Antonio Pedrosa, Hansjürg Wälti
  • FLASHLIGHT FOR ALARM SYSTEMS
    Publication number: 20100264840
    Abstract: A flashlight for alarm systems includes a light source containing at least one light emitting diode and a circuit which controls said light source. The circuit has a feed supply, a current converter, and flash control device. The current converter, the light source, and the flash control device are connected in series. The current converter includes a control unit, an inductor, an induction stop, and a resistor which are connected in series. The flash control device includes at least one switch for actuating the light source and a microprocessor for controlling the at least one switch.
    Type: Application
    Filed: June 13, 2008
    Publication date: October 21, 2010
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Max Grimm, Kurt Müller, Antonio Pedrosa, Hansjürg Wälti
  • Monitoring system including a number of measuring stations series connected to a signal line
    Patent number: 4568919
    Abstract: In the monitoring system which is intended for buildings, rooms and objects a multitude of measuring or detecting and signaling stations are series connected to a central signal station. Each of the detecting and signalling stations transmits information about its instantaneous state, which may be any one of standby, warning, alarm, malfunction, to the central signal station by means of an electronic circuit member.
    Type: Grant
    Filed: November 16, 1983
    Date of Patent: February 4, 1986
    Assignee: Cerberus AG
    Inventors: Jurg Muggli, Peter Mueller, Hansjurg Waelti, Eugen G. Schibli, Max Grimm