Patents by Inventor David J. Dlugos

David J. Dlugos 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: 20080094070
    Abstract: A fluid conductivity test device for testing the conductivity of a fluid in a container. The device includes a fitting that may mate either directly to or indirectly to a tap on, for example, a keg, to allow the fluid in the container to come into contact with the sensor device. The conductivity of the fluid is measured and compared with known conductivities for identification of the fluid. The entire device is relatively small and light-weight for ease of connection to many different containers.
    Type: Application
    Filed: October 23, 2006
    Publication date: April 24, 2008
    Inventor: David J. Dlugos
  • Patent number: 6229300
    Abstract: A tilt sensor utilizes the “Wiegand Effect” to sense the occurrence of a tilting of the sensor from one inclined position to a horizontal position to another inclined position. The tilt sensor includes within a plastic or other non-magnetic body a non-magnetic elongated tube, a magnet that is contained and substantially freely slidable within the elongated tube, and a Wiegand wire that extends along and that is adjacent to the elongated tube. The tilt sensor also generally includes a coil wound on the Wiegand wire and a pole piece that extends along and that is adjacent to the elongated tube through which the Wiegand wire extends, and the pole piece is made of a material through which a magnetic flux path can be created. In operation, as the tilt sensor is moved from one inclined position to another inclined position, the magnet within the elongated tube slides from one end of the tube to the other.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: May 8, 2001
    Assignee: HID Corporation
    Inventor: David J. Dlugos
  • Patent number: 6191687
    Abstract: A Wiegand sensor is provided as a power source for an external circuit, wherein an alternating magnetic field changes the magnetic state of a Wiegand wire within the Wiegand sensor which, in turn, produces a substantial output pulse that is provided as a power source for the external circuit. The external circuit may be a transmitter that is powered by the output of the Wiegand sensor and upon being powered transmits an information signal to an appropriate receiver. The number of occurrences that the magnetic field alternates corresponds to and is ascertained from the number of information signals that are transmitted. The alternating magnetic field may be generated by magnets coupled to a rotating valve of a gas or water meter such that the occurrence of each transmission of the information signal represents the flow of a predetermined amount of gas or water through the meter.
    Type: Grant
    Filed: September 24, 1998
    Date of Patent: February 20, 2001
    Assignee: HID Corporation
    Inventors: David J. Dlugos, Don Small, David A. Siefer
  • Patent number: 5908103
    Abstract: A Wiegand token essentially is comprised of a disk-like token body that has two substantially flat surfaces, one of the flat surface including a groove, for example, a circular groove, therein, and a Wiegand wire is embedded within the groove of the token body. The Wiegand token may have multiple concentric grooves with a Wiegand wire embedded within each groove. In general, the Wiegand token is for use in a device having a read head that responds to a magnetic field change generated from a switch in state of the Wiegand wire as the token passes by the read head. When the token includes plural Wiegand wires therein, the read head responds separately to each magnetic field change generated from a switch in state of each Wiegand wire as the respective Wiegand wire passes by the read head. Moreover, the read head separately responds to magnetic field changes that are generated from a switch in state of two different segments of the Wiegand wire as the respective segment passes by the read head.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: June 1, 1999
    Assignee: HID Corporation
    Inventor: David J. Dlugos