Patents by Inventor Rolf Wendt

Rolf Wendt 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: 10613130
    Abstract: A voltage detection system for detecting a stray voltage in pool water within a pool caused by an electrical fixture integral with a pool wall of the pool. The system comprises a pair of elongate conductive elements, with one of the elongate conductive elements having a detector electrode end and a terminal end, and with the other elongate conductive element having a reference electrode end and a terminal end. The detector electrode end is positioned adjacent to the electrical fixture and the reference electrode end is positioned on an opposite side of the pool and preferably a maximum distance from the detector electrode end. And, the terminal ends are connected to a microprocessor for determining if a voltage between the detector electrode end and reference electrode end is greater than a predetermined threshold voltage.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: April 7, 2020
    Inventors: Natalie Forood, Walter Maclay, Rolf Wendt
  • Publication number: 20150077005
    Abstract: An LED bulb is described, comprising LEDs within a shell and a driver circuit to operate the LEDs at a plurality of brightness levels. The driver circuit comprises first and second inputs to receive AC, a neutral input, a converter circuit, first and second rectifier circuits, a detector circuit, and a processing circuit. The first rectifier circuit is connected to the first and neutral inputs and rectifies the AC received. The second rectifier circuit is connected to the second and neutral inputs and rectifies the AC received. The detector circuit is connected to the first and second rectifier circuits. The processing circuit has a first and a second processor input, and is connected to the detector circuit. The processing circuit produces a chop signal with a duty cycle based on whether the first or second input is hot. The converter circuit powers the LEDs based on the chop signal.
    Type: Application
    Filed: November 24, 2014
    Publication date: March 19, 2015
    Inventor: Rolf WENDT
  • Patent number: 8901852
    Abstract: An LED bulb is described, comprising LEDs within a shell and a driver circuit to operate the LEDs at a plurality of brightness levels. The driver circuit comprises first and second inputs to receive AC, a neutral input, a converter circuit, first and second rectifier circuits, a detector circuit, and a processing circuit. The first rectifier circuit is connected to the first and neutral inputs and rectifies the AC received. The second rectifier circuit is connected to the second and neutral inputs and rectifies the AC received. The detector circuit is connected to the first and second rectifier circuits. The processing circuit has a first and a second processor input, and is connected to the detector circuit. The processing circuit produces a chop signal with a duty cycle based on whether the first or second input is hot. The converter circuit powers the LEDs based on the chop signal.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: December 2, 2014
    Assignee: Switch Bulb Company, Inc.
    Inventor: Rolf Wendt
  • Publication number: 20140327369
    Abstract: An LED bulb is described, comprising LEDs within a shell and a driver circuit to operate the LEDs at a plurality of brightness levels. The driver circuit comprises first and second inputs to receive AC, a neutral input, a converter circuit, first and second rectifier circuits, a detector circuit, and a processing circuit. The first rectifier circuit is connected to the first and neutral inputs and rectifies the AC received. The second rectifier circuit is connected to the second and neutral inputs and rectifies the AC received. The detector circuit is connected to the first and second rectifier circuits. The processing circuit has a first and a second processor input, and is connected to the detector circuit. The processing circuit produces a chop signal with a duty cycle based on whether the first or second input is hot. The converter circuit powers the LEDs based on the chop signal.
    Type: Application
    Filed: May 2, 2013
    Publication date: November 6, 2014
    Applicant: SWITCH BULB COMPANY, INC.
    Inventor: Rolf WENDT
  • Publication number: 20100286935
    Abstract: A method for generating an energy pulse representative of a unit of consumed energy is disclosed, comprising the steps of: receiving a first energy measurement; receiving a second energy measurement; and if the second energy is greater than or equal to an energy threshold, generating an energy measurement pulse as a function of said first energy measurement, said second energy measurement, and said energy threshold.
    Type: Application
    Filed: May 5, 2009
    Publication date: November 11, 2010
    Applicant: POWRtec
    Inventor: Rolf Wendt
  • Publication number: 20100283453
    Abstract: An energy measurement by an electric meter is determined by a method, comprising the steps of: determining a normalization constant (K) representative of a unit of measured energy for each pulse generated by said electric meter; receiving a pulse by said electric meter; and generating an energy measurement by applying said normalization constant to said received pulse.
    Type: Application
    Filed: May 5, 2009
    Publication date: November 11, 2010
    Applicant: POWRtec
    Inventor: Rolf Wendt