Patents by Inventor Scott Bartky
Scott Bartky 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).
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Patent number: 5426843Abstract: A method for compressively forming a ferrule about a cord is provided. The method utilizes two successive compressive forming steps. In the first step, the starting ferrule is formed into a crescent-like configuration in side elevation. In the second step, the crescent-like configuration is formed into a cardioid-like configuration in side elevation. The method can be practiced using a hand-operated forceps that is equipped with shaping dies. The resulting so formed ferrule displays superior cord holding and retaining characteristics.Type: GrantFiled: January 27, 1994Date of Patent: June 27, 1995Assignee: ARI Imports, Inc.Inventor: W. Scott Bartky
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Patent number: 5138333Abstract: A method of operating a pulsed droplet deposition apparatus for ejecting a liquid droplet from a nozzle supplied by a liquid retaining chamber comprises applying a first energy pulse to the liquid in the chamber of sufficient energy to effect expulsion of a droplet from the nozzle and thereafter applying a further energy pulse to the liquid in the chamber to insure that the meniscus of the body of liquid to which the droplet is attached is convex in the direction of motion of the droplet at the time of detachment of the droplet, so as to propel the droplet along the axis of the nozzle. The second pulse has an energy content which is insufficient to alone effect droplet ejection.Type: GrantFiled: September 16, 1991Date of Patent: August 11, 1992Assignee: Xaar LimitedInventors: W. Scott Bartky, Stephen Temple
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Patent number: 5028812Abstract: A multiplexer circuit for effecting, in successive phases of operation, actuation of selected ones of respective groups of a plurality of capacitance actuated devices electrically represented by a plurality of series-connected capacitors, each device corresponding to an adjacent pair of the capacitors. The multiplexer includes a signal generator and a plurality of parallel electrical paths connected thereacrosss. Each path includes the common node formed by the capacitor pair corresponding to a respective one of the devices and first and second switches. A logic circuit is initially operable for respectively closing and opening the first and second switches of a selected path in one group and respectively opening and closing the first and second switches of the paths adjacent thereto for charging the two capacitors connected to the selected path.Type: GrantFiled: May 12, 1989Date of Patent: July 2, 1991Assignee: Xaar Ltd.Inventor: W. Scott Bartky
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Patent number: 5028936Abstract: A pulsed droplet ink jet printer has at least one channel communicating with a nozzle. The side wall of the channel is formed as a shear mode piezo-electric actuator comprising an unpoled crystalline material. Electrodes applied to the actuator enable an electric field to be applied such that the actuator moves in transversely of the field to change the liquid pressure in the channel and thereby eject a droplet through the nozzle. The actuator can be made in two parts so as to deform, in cross section, to a chevron formation.Type: GrantFiled: September 1, 1989Date of Patent: July 2, 1991Assignee: Xaar Ltd.Inventors: W. Scott Bartky, Anthony D. Paton, Stephen Temple, A. John Michaelis
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Patent number: 5003679Abstract: A pulsed droplet ink jet printer has at least one channel communicating with a nozzle. The side wall of the channel is formed as a shear mode piezo-electric actuator. Electrodes applied to the actuator enable an electric field to be applied such that the actuator moves in the direction of the field to change the liquid pressure in the channel and thereby eject a droplet through the nozzle. The actuator can be made in two parts so as to deform, in cross section, to a chevron formation.Type: GrantFiled: September 1, 1989Date of Patent: April 2, 1991Assignee: XAAR LimitedInventors: W. Scott Bartky, Anthony D. Paton, Stephen Temple, A. John Michaelis
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Patent number: 4992808Abstract: A multi-channel array, pulsed droplet ink jet printer comprises a plurality of channels each communicating with a respective nozzle. A side wall of each channel is formed as a shear mode piezo-electric actuator. Electrodes applied to the actuators enable electric fields to be applied such that the actuators move laterally in the direction of the field to change the liquid pressure in the channels for effecting droplet ejection through the channel nozzles. The actuators can be made in two parts so as to deform, in cross section, to a chevron formation.Type: GrantFiled: September 5, 1989Date of Patent: February 12, 1991Assignee: XAAR LimitedInventors: W. Scott Bartky, Anthony D. Paton, Stephen Temple, A. John Michaelis
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Patent number: 4973981Abstract: A method for testing body components of pulsed droplet deposition apparatus comprises applying a variable frequency voltage to the electrodes of each of a number of selected channel wall elements. The resulting impedance variations are used to determine the natural frequencies of the selected wall elements which, in turn, are used to determine whether the compliance ratios of the selected wall elements and the droplet liquid to be used therewith lies within a desired range of values.Type: GrantFiled: December 29, 1989Date of Patent: November 27, 1990Assignee: AM International, Inc.Inventors: W. Scott Bartky, Anthony D. Paton
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Patent number: 4887100Abstract: A pulsed droplet ink jet printer has relatively long thin ink channels extending in parallel between an ink manifold 13, and a nozzle plate 5 providing a nozzle 6 for each channel. Side walls 11 may be formed substantially entirely of piezo-electric material so as to be displaceable transversely into a selected channel on the application of an electric field. This transverse displacement produces an acoustic wave in the channel which results in the ejection of an ink droplet. The side walls may deflect in shear mode to a cross-section of chevron formation. Usefully, it is arranged that both side walls adjoining the selected channel are displaced inwardly of the channel to cooperate in droplet ejection. Under this arrangement, the channels are assigned alternately to first and second groups of channels, only one group of channels being capable of actuation at any one instant.Type: GrantFiled: January 4, 1988Date of Patent: December 12, 1989Assignee: AM International, Inc.Inventors: A. John Michaelis, Anthony D. Paton, Stephen Temple, W. Scott Bartky
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Patent number: 4879568Abstract: A pulsed droplet ink jet printer has at least one channel communicating with a nozzle. The side wall of the channel is formed as a shear mode piezo-electric actuator. Electrodes applied to the actuator enable an electric field to be applied such that the actuator moves in the direction of the field to change the liquid pressure in the channel and thereby eject a droplet through the nozzle. The actuator can be made in two parts so as to deform, in cross section, to a chevron formation.Type: GrantFiled: January 4, 1988Date of Patent: November 7, 1989Assignee: AM International, Inc.Inventors: W. Scott Bartky, Anthony D. Paton, Stephen Temple, A. John Michaelis
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Patent number: 4742365Abstract: In an ink jet print head wherein a plurality of pumping chambers are provided for receiving ink and individually discharging the ink on demand in droplet form. The pumping chambers are formed on a substrate and defined in part by a continuous film of piezoelectric material extending over the substrate. Electrodes are electrically coupled on opposite sides of the piezoelectric film and positioned to define a plurality of distinct, electrically pulsed ink droplet drive elements operatively associated individually with the plurality of pumping chambers. An orifice for each chamber causes ink to be ejected from the chamber in response to demand electrical pulsation of the drive element for the respective chamber.Type: GrantFiled: April 23, 1986Date of Patent: May 3, 1988Assignee: AM International, Inc.Inventors: W. Scott Bartky, A. John Michaelis
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Patent number: 4415921Abstract: A calibration circuit and method for instructing an instrument operator on how to adjust the brightness and contrast controls of a video display in order to achieve a precise display intensity directly proportional to the video drive signal input to the video display. A photometer detects the display intensity as the video drive is modulated and a differential amplifier compares the video drive to the photometer output signal thereby generating an analog offset signal highly representative of brightness and contrast offsets. The analog offset signal is converted to numerical offset values from which independent brightness and contrast offsets are computed. For raster-scanned video displays only a one-bit analog-to-digital converter, a comparator, is required and a multi-bit numerical value of the video offset may be obtained from the comparator output by the method of counting the number of scan lines in each frame giving a positive comparator output.Type: GrantFiled: October 30, 1981Date of Patent: November 15, 1983Assignee: Nicolet Instrument CorporationInventors: Patrick Mulvanny, Scott Bartky
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Patent number: 4399459Abstract: A circuit which accepts a variable horizontal frequency input signal and an independent variable vertical frequency input signal and generates a combined video synchronization signal including horizontal synchronization pulses and serrated vertical synchronization pulses preceded and followed by equalization pulses in accordance with specifications established by the National Television Standards Committee. The circuit is useful for generating a combined video synchronization signal from the variable frequency horizontal and vertical synchronization pulses supplied by programmable cathode ray tube controller integrated circuits.Type: GrantFiled: October 30, 1981Date of Patent: August 16, 1983Assignee: Nicolet Instrument CorporationInventors: Patrick Mulvanny, Scott Bartky
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Patent number: 4359724Abstract: An eyelid movement detector, includes one electrode to be placed above each eyebrow of an individual and a third electrode to serve as a ground or reference. The electrodes sense eyelid muscle activity and produce a voltage in response to eyelid movement, indicative of a state of awareness. The sensed voltage produced is amplified and compared to a threshold reference voltage by a comparator, which produces a control signal if the sensed voltage is greater than the threshold voltage. The control signal resets a timer. If the timer is not reset within a predetermined time interval, an alarm is activated to warn an individual.Type: GrantFiled: April 28, 1980Date of Patent: November 16, 1982Assignee: Ronald R. ZimmermanInventors: Ronald R. Zimmerman, W. Scott Bartky
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Patent number: 4023462Abstract: A musical instrument tuning device for tuning a musical instrument, having a vibrating sound producing member, is herein disclosed. The musical instrument tuning device includes a tone sensor, connected to the vibrating sound producing member. A comparator is connected to the tone sensor. A signal generator is also connected to the tone sensor. A tone adjustor is connected to the comparator, and to the vibrating sound producing member. The tone sensor senses the rate of vibration of the vibrating sound producing element, and produces a tone sensor signal indicative of the rate of vibration. The signal generator produces a selected frequency signal. The comparator receives the tone sensor signal and selected frequency signal, and produces an error signal indicative of the difference between the tone sensor signal and selected frequency signal. The tone adjustor receives the error signal, and adjusts the rate of vibration of the vibrating sound producing element in response thereto.Type: GrantFiled: December 22, 1975Date of Patent: May 17, 1977Assignee: Sam DenovInventors: Sam Denov, Rame W. Bull, Walter Scott Bartky
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Patent number: D356520Type: GrantFiled: July 11, 1994Date of Patent: March 21, 1995Assignee: Ari Imports, Inc.Inventor: W. Scott Bartky
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Patent number: D366199Type: GrantFiled: July 22, 1994Date of Patent: January 16, 1996Assignee: Ari Imports, Inc.Inventor: W. Scott Bartky
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Patent number: RE36667Abstract: A pulsed droplet ink jet printer has relatively long thin ink channels extending in parallel between an ink manifold 13, and a nozzle plate 5 providing a nozzle 6 for each channel. Side walls 11 may be formed substantially entirely of piezo-electric material so as to be displaceable transversely into a selected channel on the application of an electric field. This transverse displacement produces an acoustic wave in the channel which results in the ejection of an ink droplet. The side walls may deflect in shear mode to a cross-section of chevron formation. Usefully, it is arranged that both side walls adjoining the selected channel are displaced inwardly of the channel to cooperate in droplet ejection. Under this arrangement, the channels are assigned alternately to first and second groups of channels, only one group of channels being capable of actuation at any one instant.Type: GrantFiled: August 15, 1995Date of Patent: April 25, 2000Assignee: Xaar LimitedInventors: A. John Michaelis, Anthony D. Paton, Stephen Temple, W. Scott Bartky