Patents by Inventor Ted J. Casper

Ted J. Casper 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: 20230107042
    Abstract: A voltage stabilizer assembly includes a power supply, a device, and a voltage stabilizer. The device is connected to the power supply, wherein the device performance is affected based on the regulation of its power source. The voltage stabilizer is connected between the device and the power supply. The voltage stabilizer includes a low pass filter connected to an output of the power supply and a buffer receiving its input from the low pass filter, the buffer receiving power from the power supply, and the output of the buffer connected to the device.
    Type: Application
    Filed: March 2, 2021
    Publication date: April 6, 2023
    Applicant: LECO Corporation
    Inventors: Jeffrey Melvin, Ted J. Casper
  • Patent number: 7884317
    Abstract: Circuits for correcting base line shift of the detector coupling circuit of a TOFMS provide gain and impedance characteristics that compensate for the AC coupling effect of the detector. In one circuit, base line correction is achieved by injecting a current equal to that which flows due to the buildup charge in the detectors AC coupling network. In another circuit, the current source drives an integrator which is coupled to the signal path to reduce the detector AC coupling effects. In another circuit, a low noise amplifier utilizes a feedback network that reduces the detector AC coupling effects. In yet another circuit, an operational amplifier is employed to reduce the detector AC coupling effects.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: February 8, 2011
    Assignee: Leco Corporation
    Inventor: Ted J. Casper
  • Publication number: 20080156982
    Abstract: Circuits for correcting base line shift of the detector coupling circuit of a TOFMS provide gain and impedance characteristics that compensate for the AC coupling effect of the detector. In one circuit, base line correction is achieved by injecting a current equal to that which flows due to the buildup charge in the detectors AC coupling network. In another circuit, the current source drives an integrator which is coupled to the signal path to reduce the detector AC coupling effects. In another circuit, a low noise amplifier utilizes a feedback network that reduces the detector AC coupling effects. In yet another circuit, an operational amplifier is employed to reduce the detector AC coupling effects.
    Type: Application
    Filed: December 20, 2007
    Publication date: July 3, 2008
    Inventor: Ted J. Casper
  • Patent number: 7375569
    Abstract: A pulse jitter reduction circuit employs a low jitter system clock coupled to synchronize a pulse generating device and an ultra low jitter flip-flop to generate substantially jitter-free trigger signals employed to generate high voltage pulses for a flight tube of a time-of-flight mass spectrometer. By eliminating time fluctuations due to jitter in the triggering signal, the predictability of the arrival time of ions along a flight tube of a time-of-flight mass spectrometer is greatly improved, thereby improving the resolution of the mass spectrometer.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: May 20, 2008
    Assignee: Leco Corporation
    Inventors: Timothy A. Hall, Ted J. Casper
  • Patent number: 5408315
    Abstract: A non-conductive isolator for supporting a sample to be analyzed by radio frequency energy induced glow discharge techniques has a conductive ring for coupling a source of radio frequency energy to the same surface of a sample which is in direct contact with the induced glow discharge. An adapter kit for converting a direct current glow discharge analysis apparatus to a radio frequency energy induced flow discharge is also disclosed as well as the method of analyzing non-conductive and sample conductive using a source of RF energy coupled to the same sample surface being analyzed.
    Type: Grant
    Filed: July 28, 1993
    Date of Patent: April 18, 1995
    Assignee: Leco Corporation
    Inventors: Joel C. Mitchell, Ted J. Casper
  • Patent number: 5155547
    Abstract: A multiple frequency plasma torch activation circuit includes a system driver circuit with a pair of different frequency sources and a selector switch which allows one of the sources to be coupled to a splitter assembly which applies signals to a pair of independent power amplifiers having their outputs applied to a combiner assembly and to the plasma torch inductor. A detector circuit provides signals to a power control circuit which includes forward and reflected power monitoring and an impedance matching circuit for optimum coupling of the frequencies to the inductive load.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: October 13, 1992
    Assignee: Leco Corporation
    Inventors: Ted J. Casper, Joel C. Mitchell, Gordon C. Ford