Patents Assigned to Wolfgram Industries, Inc.
  • Patent number: 7733208
    Abstract: The present invention provides a high voltage, step-up, high current DC pulse type transformer with increased coupling coefficient between the primary and secondary windings through close proximity of the primary winding turns and secondary winding turns by means of transformer construction that provides a plurality of winding bays for a high voltage secondary winding physically located in close proximity to the primary winding. The plurality of winding bays for the secondary winding are provided by means of a frame and separate thin insulation layer where the thin insulation layer provides the barrel for all or part of the secondary winding.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: June 8, 2010
    Assignee: Wolfgram Industries, Inc.
    Inventor: Kirk W. Wolfgram
  • Publication number: 20090261934
    Abstract: The present invention provides a high voltage, step-up, high current DC pulse type transformer with increased coupling coefficient between the primary and secondary windings through close proximity of the primary winding turns and secondary winding turns by means of transformer construction that provides a plurality of winding bays for a high voltage secondary winding physically located in close proximity to the primary winding. The plurality of winding bays for the secondary winding are provided by means of a frame and separate thin insulation layer where the thin insulation layer provides the barrel for all or part of the secondary winding.
    Type: Application
    Filed: April 21, 2008
    Publication date: October 22, 2009
    Applicant: Wolfgram Industries, Inc.
    Inventor: Kirk W. Wolfgram
  • Patent number: 7543406
    Abstract: A single use, reusable or disposable, animal trap suitable for trapping rodents, having a stable enclosure, an unstable internal floor that tilts to dose the trap, a locking mechanism to keep trap closed, and a release for said locking mechanism, where both the locking mechanism and release mechanism are unaffected by gravity once the trap has tripped, regardless of the orientation of the trap relative to gravity. The floor of the trap tilts back and forth allowing the animal to enter and leave the trap (each time leaving the trap in the open position), until the animal enters the trap far enough such that the floor tilts to one end closing the opening in the trap where the floor is then locked into the closed (or trapped) position with the animal inside.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: June 9, 2009
    Assignee: Wolfgram Industries, Inc.
    Inventor: Kirk W. Wolfgram
  • Publication number: 20070277426
    Abstract: A single use, reusable or disposable, animal trap suitable for trapping rodents, having a stable enclosure, an unstable internal floor that tilts to dose the trap, a locking mechanism to keep trap closed, and a release for said locking mechanism, where both the locking mechanism and release mechanism are unaffected by gravity once the trap has tripped, regardless of the orientation of the trap relative to gravity. The floor of the trap tilts back and forth allowing the animal to enter and leave the trap (each time leaving the trap in the open position), until the animal enters the trap far enough such that the floor tilts to one end closing the opening in the trap where the floor is then locked into the closed (or trapped) position with the animal inside.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 6, 2007
    Applicant: Wolfgram Industries, Inc.
    Inventor: Kirk W. Wolfgram
  • Patent number: 7191735
    Abstract: The present invention provides a high voltage pulse generator used for deterring animals where the high voltage pulses are delivered to the animal through an electrical conductor that lays directly on the ground and is not insulated from the underlying ground system. The invention's high voltage pulse generator has a predetermined output impedance that is significantly lower than the impedance of an animal that may contact either the device's output or a conductor laying on the ground that is connected to the devices output. The invention's high voltage pulse generator also has a predetermined output impedance that is lower than the impedance of extremely long conductors in contact with the underlying ground system. This significantly low output impedance allows the device to deliver maximum output energy to the conductor in contact with the underlying ground system while maintaining high voltage and adequate energy levels to deliver an effective shock for deterring animals.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: March 20, 2007
    Assignee: Wolfgram Industries, Inc.
    Inventor: Kirk W. Wolfgram
  • Patent number: 7148779
    Abstract: The present invention provides a low duty cycle, high current DC pulse type transformer with increased coupling coefficient between the primary and secondary windings by changing the proximity of the primary windings to the secondary windings through a plurality of primary windings separated by layers of secondary windings thus reducing the average distance between the primary windings and secondary windings. In addition to the increased coupling coefficient, the invention provides a reduction in electrical potential between primary windings and secondary windings through an electrical connection between the primary winding and a tap within the secondary winding.
    Type: Grant
    Filed: September 3, 2004
    Date of Patent: December 12, 2006
    Assignee: Wolfgram Industries, Inc.
    Inventor: Kirk W. Wolfgram
  • Publication number: 20050231885
    Abstract: The present invention provides a high voltage pulse generator used for deterring animals where the high voltage pulses are delivered to the animal through an electrical conductor that lays directly on the ground and is not insulated from the underlying ground system. The invention's high voltage pulse generator has a predetermined output impedance that is significantly lower than the impedance of an animal that may contact either the device's output or a conductor laying on the ground that is connected to the devices output. The invention's high voltage pulse generator also has a predetermined output impedance that is lower than the impedance of extremely long conductors in contact with the underlying ground system. This significantly low output impedance allows the device to deliver maximum output energy to the conductor in contact with the underlying ground system while maintaining high voltage and adequate energy levels to deliver an effective shock for deterring animals.
    Type: Application
    Filed: March 7, 2005
    Publication date: October 20, 2005
    Applicant: Wolfgram Industries, Inc.
    Inventor: Kirk Wolfgram
  • Patent number: 6948452
    Abstract: The present invention provides a high voltage pulse generator used for deterring animals where the high voltage pulses are delivered to the animal through an electrical conductor that lays directly on the ground and is not insulated from the underlying ground system. The invention's high voltage pulse generator has a predetermined output impedance that is significantly lower than the impedance of an animal that may contact either the device's output or a conductor laying on the ground that is connected to the devices output. The invention's high voltage pulse generator also has a predetermined output impedance that is lower than the impedance of the conductor in contact with the underlying ground system. This significantly low output impedance allows the device to deliver maximum output energy to the conductor in contact with the underlying ground system while maintaining high voltage and adequate energy levels to deliver an effective shock for deterring animals.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: September 27, 2005
    Assignee: Wolfgram Industries, Inc.
    Inventor: Kirk W. Wolfgram
  • Publication number: 20050150469
    Abstract: The present invention provides a high voltage pulse generator used for deterring animals where the high voltage pulses are delivered to the animal through an electrical conductor that lays directly on the ground and is not insulated from the underlying ground system. The invention's high voltage pulse generator has a predetermined output impedance that is significantly lower than the impedance of an animal that may contact either the device's output or a conductor laying on the ground that is connected to the devices output. The invention's high voltage pulse generator also has a predetermined output impedance that is lower than the impedance of the conductor in contact with the underlying ground system. This significantly low output impedance allows the device to deliver maximum output energy to the conductor in contact with the underlying ground system while maintaining high voltage and adequate energy levels to deliver an effective shock for deterring animals.
    Type: Application
    Filed: January 8, 2004
    Publication date: July 14, 2005
    Applicant: Wolfgram Industries, Inc.
    Inventor: Kirk Wolfgram
  • Patent number: 6822549
    Abstract: The present invention provides a high peak current, low duty cycle, pulse type transformer with two methods of increasing the coupling coefficient between the primary and secondary windings. The first method provides an increased coupling coefficient for a pulse type transformer of a coreless design by increasing the number of secondary turns in proximity to a number of primary turns by providing multiple primary windings and multiple secondary windings configured in layers or winding bays in an alternating secondary, primary, secondary, primary configuration. The second method provides an increased coupling coefficient for a pulse type transformer with a magnetic core that utilizes a non-uniform cross-sectional area along the magnetic path where the cross-sectional area is increased within the primary and secondary windings.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: November 23, 2004
    Assignee: Wolfgram Industries, Inc.
    Inventor: Kirk W. Wolfgram