Patents Represented by Attorney William D. Haffner
  • Patent number: 5557905
    Abstract: A hollow syringe type medicine applicator in the form of a bar bit wherein the device is placed and affixed in an equine patient's mouth for the purpose of dispensing treatment substances through an aperture of the bit directly onto the surface of the horse's tongue when a plunger is depressed.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: September 24, 1996
    Inventor: Kay J. Harding
  • Patent number: 5154101
    Abstract: A combination jar or bottle cap remover and bag opener. This kitchen tool consists essentially of two side bars and a base. One side bar contains a gripping blade for removing caps and the other side bar contains a bag opening device.
    Type: Grant
    Filed: August 13, 1991
    Date of Patent: October 13, 1992
    Inventors: Dalton H. Wolford, Elinor B. Wolford
  • Patent number: 5111831
    Abstract: A rollable condom having a retention periphery at the open end (28) of an elongated tubular sheath (20). The open end (28) is a discontinuous periphery that communicates with a discontinuous bead (22)at its edge. The periphery becomes discontinuous at a notch (34). A hole (32) is located opposite the notch (34) within the sheath wall (38) along the bead (22). The hole (34) has an indentation (24) which is centered on the hole (32) toward the closed end (30) of the sheath (20). Located within the sheath (20) is an inner seal (36) which communicates with and protrudes from the sheath wall (38) to extend forward toward the closed end (30) of the sheath (20) to form a circumference of smaller diameter than the tubular sheath (20). When the sheath (20) is fully unrolled onto the penis, and the scrotum is positioned through the hole (32), a retention periphery is created which provides support to the scrotum in achieving increased physical contact during use.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: May 12, 1992
    Inventor: David J. Foggia
  • Patent number: 4987706
    Abstract: A controlled-environment entertainment system comprising a reclining chair entirely enclosed in a sound-proof rectangular enclosure, an audio-visual entertainment system, and a ventilation system. The enclosure is constructed of two modules arranged for quick disengagement. Retractable wheels on the enclosure provide an added measure of mobility.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: January 29, 1991
    Inventors: William E. Hughes, Pamela K. Hughes
  • Patent number: 4842931
    Abstract: An affixable pad for corns, calluses, bunions, and the like, made from a soft viscoelastic gel material. Preferably, the gel contains a high percentage of plasticizing oil such as Mineral Oil U.S.P. The gel is impregnated onto an elastic fabric, such as Spandex, which allows the gel to flow around a lesion and equalize pressure in a superior manner.
    Type: Grant
    Filed: July 19, 1988
    Date of Patent: June 27, 1989
    Inventor: Gerald P. Zook
  • Patent number: 4344029
    Abstract: An intermodulation test analyzer which automatically determines whether an SMPTE or CCIF intermodulation test is being conducted and switches its output accordingly is disclosed. This is accomplished by sensing the low frequency energy content of the test signal. This energy content is compared to a reference level representative of the low frequency energy content of a typical SMPTE test signal. Therefore, if the low frequency energy content of the input signal is greater than the reference level, the signal is treated as the SMPTE test signal. However, if the low frequency energy content is less than the reference level, the signal is processed as a CCIF test signal.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: August 10, 1982
    Assignee: Tektronix, Inc.
    Inventors: Richard C. Cabot, Bruce E. Hofer
  • Patent number: 4335356
    Abstract: Two multiplying digital-to-analog converters are used to digitally weight an analog current to produce a controllable output current. The output current is selected by a digital control signal applied to the control inputs of both converters. Two-quadrant operation is ensured by feeding the analog output of each converter to a current mirror amplifier which develops the required output current.
    Type: Grant
    Filed: January 21, 1980
    Date of Patent: June 15, 1982
    Assignee: Tektronix, Inc.
    Inventor: Philip S. Crosby
  • Patent number: 4254435
    Abstract: A circuit for reducing the effects of negative-going impulse noise in composite television video signals has on sync separators is disclosed. A variable output current source is used to supply rundown current to a dc restorer in a sync separator. A retriggerable monostable multivibrator is triggered by negative-going impulse spikes in the composite video signal. The output of this multivibrator is coupled to the current source to increase its output and therefore decrease the time required for the dc restorer to recover from the negative spike.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: March 3, 1981
    Assignee: The Grass Valley Group, Inc.
    Inventors: Birney D. Dayton, William L. Rorden, Leon J. Stanger
  • Patent number: 4249112
    Abstract: A dynamic focus system for a cathode ray tube display system is described. In some cathode ray tubes an electrostatic or electromagnetic stigmator is driven by a correction signal derived from the beam deflection signals. The required signal is proportional to the product of the horizontal and vertical deflection signals. The described system incorporates a means for making the constant of proportionality independently adjustable for each quadrant of the cathode ray tube screen.
    Type: Grant
    Filed: September 18, 1979
    Date of Patent: February 3, 1981
    Assignee: Tektronix, Inc.
    Inventor: Barry A. McKibben
  • Patent number: 4246556
    Abstract: A removable diode package for mounting beam-lead diodes in coaxial, stripline or waveguide microwave circuits is described. The diode package is capable of operation at frequencies above 40 GHz. A low-dielectric polyimide insulating washer is used to reduce parasitic elements normally associated with diode packages at microwave and millimeter frequencies.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: January 20, 1981
    Assignee: Tektronix, Inc.
    Inventor: Philip B. Snow
  • Patent number: 4241296
    Abstract: A circuit for driving and protecting the horizontal output transistor of a resonant raster scan display is disclosed. The driving circuitry described provides a circuit for separately establishing the currents required to turn a horizontal output transistor on and off. This transistor is turned on by a forward base current determined by beta requirements and turned off by a reverse base current equal to one half of the forward collector current. Protection against several common circuit failures is also incorporated in the circuit.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: December 23, 1980
    Assignee: Tektronix, Inc.
    Inventor: Archie M. Barter
  • Patent number: 4233629
    Abstract: An apparatus and method for precise separation of synchronizing information from a color television signal is described. Synchronizing signals are separated from the input video and used in a sample-and-hold circuit as the sampling pulses. The input video is sampled during the duration of the sync pulse. The sample is inverted and fed to a summing point where it is summed with a delayed version of the input video. A null is produced at the summing point during the duration of the input sync pulse. Since the input video to summing point has been delayed, the clamp null at the summing point begins during the front porch of the horizontal line interval allowing the leading edge of sync to be picked off very accurately by a sync separating comparator.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: November 11, 1980
    Assignee: The Grass Valley Group
    Inventor: Birney D. Dayton
  • Patent number: 4217610
    Abstract: A multifrequency burst test signal generator for use in testing television equipment is described. The starting position of the multiburst signals is progressively delayed throughout the television field thereby filling the burst packets. Also the shape of the burst packets is modified to reduce the spurious sideband signals created by the signal generator switching circuits.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: August 12, 1980
    Assignee: Tektronix, Inc.
    Inventors: David J. Jurgensen, Howard A. Landsman
  • Patent number: 4205344
    Abstract: A special effects memory system is described which stores and recalls on command complex configurations of a video production switcher as an aid in the production of special effects. A stored effect may be recalled by using a single control panel push button.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: May 27, 1980
    Assignee: The Grass Valley Group
    Inventor: Bruce L. Rayner
  • Patent number: 4196345
    Abstract: A parameter entry device for electronic instruments that also displays the current user definable system parameters is described. This device allows the user to change those parameters without using conventional rotary switches, internal straps, jumpers, etc.
    Type: Grant
    Filed: June 2, 1978
    Date of Patent: April 1, 1980
    Assignee: Tektronix, Inc.
    Inventors: Guenther W. Wimmer, Douglas B. Bingham
  • Patent number: 4191965
    Abstract: An apparatus and method for testing color sequencing of SECAM color television signals whereby any reversed color sequences will be immediately identifiable is provided. Specifically, the color sequence of SECAM picture monitor determined by white lead-in during the back porch interval or by Line Identification Signals during the vertical blanking interval is compared to a reference which can be internally derived and/or derived from another picture monitor or generator. If a difference is obtained, means are provided for visually or audibly indicating the color sequence error.
    Type: Grant
    Filed: July 11, 1978
    Date of Patent: March 4, 1980
    Assignee: Tektronix, Inc.
    Inventor: Larry A. Nelson
  • Patent number: 4190311
    Abstract: A clip for connecting an electrical component to testing equipment, comprising conductive elements mounted in a carrier in positions to engage the terminals of a multi-terminal electrical package. The conductive elements are connected via a flat cable to a remote test instrument. The profile of the clip is such that it may be connected to a multi-terminal electrical package while it is operating in an instrument having closely spaced circuit boards. Consequently, this clip eliminates the need for conventional extender boards in most test situations.
    Type: Grant
    Filed: February 26, 1979
    Date of Patent: February 26, 1980
    Assignee: Tektronix, Inc.
    Inventor: Thomas P. Basta
  • Patent number: 4171515
    Abstract: A circuit that improves the frequency response of a mixer but does not reduce mixer sensitivity is disclosed. The circuit provides a wideband constant source impedance for the mixer input through the use of a frequency diplexer.
    Type: Grant
    Filed: August 9, 1978
    Date of Patent: October 16, 1979
    Assignee: Tektronix, Inc.
    Inventor: Gordon D. Long
  • Patent number: 4163948
    Abstract: A circuit for attenuating undesired electrical aberrations associated with digital-to-analog converters is provided. Specifically, the circuit is a non-linear filter for attenuating undesired false or spurious electronic signals superimposed on the output waveform of a digital-to-analog converter when the digital word input signal is changed.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: August 7, 1979
    Assignee: Tektronix, Inc.
    Inventors: Michael L. Rieger, Martin D. Singer
  • Patent number: D363255
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: October 17, 1995
    Inventors: Rebecca D. Helms, Michael G. Helms