Patents by Inventor John Hartzell

John Hartzell 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).

  • Patent number: 9422950
    Abstract: A piston-cylinder actuator includes a unique mount for an absolute-position sensor. The mount is made from a bearing material provides a flexible connection between the sensor mount and the cylinder housing. This flexible connection allows the piston rod to deflect naturally, under its own weight or under other laterally-directed forces, while maintaining the distance and perpendicularity between the sensor and the rod surface, within acceptable limits. The sensor mount is made from a bearing material that will allow it to float directly on the rod surface without scuffing or otherwise damaging the rod surface, particularly the markings or other indicia on that surface. Due to the flexible connection between the sensor mount and the cylinder housing, the proper distance between the sensor and the rod surface can be maintained at all times.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: August 23, 2016
    Assignee: Parker-Hannifin Corporation
    Inventors: John Hartzell, James Cirillo, Dustin Hromyak, Hung phi Nguyen, David B. Crowley, Michael A. Laurich
  • Publication number: 20160231148
    Abstract: A piston-cylinder actuator (20) includes a unique mount (36) for an absolute-position sensor (30). The mount (36) is made from a bearing material provides a flexible connection between the sensor mount (36) and the cylinder housing (40). This flexible connection allows the piston rod (32) to deflect naturally, under its own weight or under other laterally-directed forces, while maintaining the distance and perpendicularity between the sensor (30) and the rod surface (34), within acceptable limits. The sensor mount (36) is made from a bearing material that will allow it to float directly on the rod surface (34) without scuffing or otherwise damaging the rod surface (34), particularly the markings or other indicia on that surface (34). Due to the flexible connection between the sensor mount (36) and the cylinder housing (40), the proper distance between the sensor (30) and the rod surface (34) can be maintained at all times.
    Type: Application
    Filed: April 13, 2016
    Publication date: August 11, 2016
    Applicant: Parker-Hannifin Corporation
    Inventors: John Hartzell, James Cirillo, Dustin Hromyak, Hung phi Nguyen, David B. Crowley, Michael A. Laurich
  • Patent number: 8890853
    Abstract: A video display is provided with a planar piezoelectric transmitter to transmit ultrasound signals, and a display panel including a plurality of pixels. Each pixel has a data interface to accept a video signal with a variable voltage associated with a range of light intensity values, and to supply a touch signal with a variable voltage derived from a range of reflected ultrasound signal energies. Each pixel is made up of a light device to supply light with an intensity responsive to the video signal voltage, and a storage capacitor to maintain a video signal voltage between refresh cycles. A piezoelectric transducer accepts a reflected ultrasound signal energy and maintains a touch signal voltage between refresh cycles. In one aspect, the storage capacitor and the piezoelectric transducer are the same device. The light device may be a liquid crystal (LC) layer or a light emitting diode.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: November 18, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Paul Schuele, Themistokles Afentakis, John Hartzell
  • Publication number: 20130319224
    Abstract: A piston-cylinder actuator includes a unique mount for an absolute-position sensor. The mount is made from a bearing material provides a flexible connection between the sensor mount and the cylinder housing. This flexible connection allows the piston rod to deflect naturally, under its own weight or under other laterally-directed forces, while maintaining the distance and perpendicularity between the sensor and the rod surface, within acceptable limits. The sensor mount is made from a bearing material that will allow it to float directly on the rod surface without scuffing or otherwise damaging the rod surface, particularly the markings or other indicia on that surface. Due to the flexible connection between the sensor mount and the cylinder housing, the proper distance between the sensor and the rod surface can be maintained at all times.
    Type: Application
    Filed: February 21, 2012
    Publication date: December 5, 2013
    Applicant: PARKER-HANNIFIN CORPORATION
    Inventors: John Hartzell, James Cirillo, Dustin Hromyak, Hung phi Nguyen, David B. Crowley, Michael A. Laurich
  • Publication number: 20080054469
    Abstract: A method is provided for electroforming metal integrated circuit structures. The method comprises: forming an opening such as a via or line through an interlevel insulator, exposing a substrate surface; forming a base layer overlying the interlevel insulator and substrate surface; forming a strike layer overlying the base layer; forming a top layer overlying the strike layer; selectively etching to remove the top layer overlying the substrate surface, exposing a strike layer surface; and, electroforming a metal structure overlying the strike layer surface. The electroformed metal structure is deposited using an electroplating or electroless deposition process. Typically, the metal is Cu, Au, Ir, Ru, Rh, Pd, Os, Pt, or Ag. The base, strike, and top layers can be deposited using physical vapor deposition (PVD), evaporation, reactive sputtering, or metal organic chemical vapor deposition (MOCVD).
    Type: Application
    Filed: October 30, 2007
    Publication date: March 6, 2008
    Inventors: David Evans, John Hartzell
  • Publication number: 20070287233
    Abstract: A piezo-TFT cantilever microelectromechanical system (MEMS) and associated fabrication processes are provided. The method comprises: providing a substrate, such as glass for example; forming thin-films overlying the substrate; forming a thin-film cantilever beam; and simultaneously forming a TFT within the cantilever beam. The TFT is can be formed least partially overlying a cantilever beam top surface, at least partially overlying a cantilever beam bottom surface, or embedded within the cantilever beam. In one example, forming thin-films on the substrate includes: selectively forming a first layer with a first stress level; selectively forming a first active Si region overlying the first layer; and selectively forming a second layer overlying the first layer with a second stress level. The thin-film cantilever beam is formed from the first and second layers, while the TFT source/drain (S/D) and channel regions are formed from the first active Si region.
    Type: Application
    Filed: June 15, 2007
    Publication date: December 13, 2007
    Inventors: Changqing Zhan, Michael Wolfson, John Hartzell
  • Publication number: 20070278600
    Abstract: A piezo thin-film diode (piezo-diode) cantilever microelectromechanical system (MEMS) and associated fabrication processes are provided. The method deposits thin-films overlying a substrate. The substrate can be made of glass, polymer, quartz, metal foil, Si, sapphire, ceramic, or compound semiconductor materials. Amorphous silicon (a-Si), polycrystalline Si (poly-Si), oxides, a-SiGe, poly-SiGe, metals, metal-containing compounds, nitrides, polymers, ceramic films, magnetic films, and compound semiconductor materials are some examples of thin-film materials. A cantilever beam is formed from the thin-films, and a diode is embedded with the cantilever beam. The diode is made from a thin-film shared in common with the cantilever beam. The shared thin-film may a film overlying a cantilever beam top surface, a thin-film overlying a cantilever beam bottom surface, or a thin-film embedded within the cantilever beam.
    Type: Application
    Filed: March 13, 2007
    Publication date: December 6, 2007
    Inventors: Changqing Zhan, Paul Schuele, John Conley, John Hartzell
  • Publication number: 20070212805
    Abstract: Processing and systems to create, and resulting products related to, very small-dimension singular, or monolithically arrayed, semiconductor mechanical devices. Processing is laser performed on selected semiconductor material whose internal crystalline structure becomes appropriately changed to establish the desired mechanical properties for a created device.
    Type: Application
    Filed: May 3, 2007
    Publication date: September 13, 2007
    Inventor: John Hartzell
  • Publication number: 20070155137
    Abstract: A high-density plasma method is provided for forming a SiOXNY thin-film. The method provides a substrate and introduces a silicon (Si) precursor. A thin-film is deposited overlying the substrate, using a high density (HD) plasma-enhanced chemical vapor deposition (PECVD) process. As a result, a SiOXNY thin-film is formed, where (X+Y<2 and Y>0). The SiOXNY thin-film can be stoichiometric or non-stoichiometric. The SiOXNY thin-film can be graded, meaning the values of X and Y vary with the thickness of the SiOXNY thin-film. Further, the process enables the in-situ deposition of a SiOXNY thin-film multilayer structure, where the different layers may be stoichiometric, non-stoichiometric, graded, and combinations of the above-mentioned types of SiOXNY thin-films.
    Type: Application
    Filed: January 26, 2007
    Publication date: July 5, 2007
    Inventors: Pooran Joshi, Apostolos Voutsas, John Hartzell
  • Publication number: 20070099327
    Abstract: An integrated MEMS package and associated packaging method are provided. The method includes: forming an electrical circuit, electrically connected to the first substrate; integrating a MEMS device on a first substrate region, electrically connected to the first substrate; providing a second substrate overlying the first substrate; and, forming a wall along the first region boundaries, between the first and second substrate. In one aspect, the electrical circuit is formed using thin-film processes; and, wherein integrating the MEMS device on the first substrate region includes forming the MEMS using thin-film processes, simultaneous with the formation of the electrical device. Alternately, the MEMS device is formed in a separate process, attached to the first substrate, and electrical interconnections are formed to the first substrate using thin-film processes.
    Type: Application
    Filed: December 18, 2006
    Publication date: May 3, 2007
    Inventors: John Hartzell, Harry Walton, Michael Brownlow
  • Publication number: 20070023851
    Abstract: A MEMS pixel sensor is provided with a thin-film mechanical device having a mechanical body, with a mechanical state responsive to a proximate environment. A thin-film electronic device converts the mechanical state into electrical signals. A pixel interface supplies power to the electronic device and transceives electrical signals. The sensor is able to operate dynamically, in real-time. For example, if the mechanical device undergoes a sequence of mechanical states at a corresponding plurality of times, the electronic device is able to supply a sequence of electrical signals to the pixel interface that are responsive to the sequence of mechanical states, at the plurality of times. Each MEMS pixel sensor may include a number of mechanical devices, and corresponding electronic devices, to provide redundancy or to measure a broadband response range.
    Type: Application
    Filed: September 6, 2006
    Publication date: February 1, 2007
    Inventors: John Hartzell, Changqing Zhan, Michael Wolfson
  • Publication number: 20060252237
    Abstract: A system and method are provided for crystallizing a semiconductor film using a digital light valve. The method comprises: enabling pixel elements from an array of selectable pixel elements; in response to enabling the pixel elements, gating a light; sequentially exposing adjacent areas of a semiconductor film, such as Si, to the gated light; annealing the light-exposed areas of semiconductor film; and, in response to the annealing, laterally growing crystal grains in the semiconductor film. For example, the method may sequentially expose adjacent areas of semiconductor film to gated light in a first direction; and, simultaneously exposing adjacent areas of semiconductor film to gated light in a second direction, different than the first direction. For example, the second direction may be perpendicular to the first direction. As a result, crystal grains can be laterally grown simultaneously in the first and second directions.
    Type: Application
    Filed: July 10, 2006
    Publication date: November 9, 2006
    Inventor: John Hartzell
  • Publication number: 20060211267
    Abstract: A method is provided for forming a silicon oxide (SiOx) thin-film with embedded nanocrystalline silicon (Si). The method deposits SiOx, where x is in the range of 1 to 2, overlying a substrate, using a high-density (HD) plasma-enhanced chemical vapor deposition (PECVD) process. As a result, the SiOx thin-film is embedded with nanocrystalline Si. The HD PECVD process may use an inductively coupled plasma (ICP) source, a substrate temperature of less than about 400° C., and an oxygen source gas with a silicon precursor. In one aspect, a hydrogen source gas and an inert gas are used, where the ratio of oxygen source gas to inert gas is in the range of about 0.02 to 5. The SiOx thin-film with embedded nanocrystalline Si typically has a refractive index in the range of about 1.6 to 2.2, with an extinction coefficient in the range of 0 to 0.5.
    Type: Application
    Filed: May 4, 2006
    Publication date: September 21, 2006
    Inventors: Pooran Joshi, Tingkai Li, Yoshi Ono, Apostolos Voutsas, John Hartzell
  • Publication number: 20060211162
    Abstract: Processing and systems to create, and resulting products related to, very small-dimension singular, or monolithically arrayed, mechanical devices. Processing is laser-performed in relation to a selected material whose internal crystalline structure becomes appropriately changed thereby to establish the desired mechanical properties for a created device.
    Type: Application
    Filed: September 14, 2005
    Publication date: September 21, 2006
    Inventor: John Hartzell
  • Publication number: 20060148137
    Abstract: An integrated MEMS package and associated packaging method are provided. The method includes: forming an electrical circuit, electrically connected to the first substrate; integrating a MEMS device on a first substrate region, electrically connected to the first substrate; providing a second substrate overlying the first substrate; and, forming a wall along the first region boundaries, between the first and second substrate. In one aspect, the electrical circuit is formed using thin-film processes; and, wherein integrating the MEMS device on the first substrate region includes forming the MEMS using thin-film processes, simultaneous with the formation of the electrical device. Alternately, the MEMS device is formed in a separate process, attached to the first substrate, and electrical interconnections are formed to the first substrate using thin-film processes.
    Type: Application
    Filed: July 8, 2005
    Publication date: July 6, 2006
    Inventors: John Hartzell, Harry Walton, Michael Brownlow
  • Publication number: 20060110939
    Abstract: A method is provided for additionally oxidizing a thin-film oxide. The method includes: providing a substrate; depositing an MyOx (M oxide) layer overlying the substrate, where M is a solid element having an oxidation state in a range of +2 to +5; treating the MyOx layer to a high density plasma (HDP) source; and, forming an MyOk layer in response to the HDP source, where k>x. In one aspect, the method further includes decreasing the concentration of oxide charge in response to forming the MyOk layer. In another aspect, the MyOx layer is deposited with an impurity N, and the method further includes creating volatile N oxides in response to forming the MyOk layer. For example, the impurity N may be carbon and the method creates a volatile carbon oxide.
    Type: Application
    Filed: January 6, 2006
    Publication date: May 25, 2006
    Inventors: Pooran Joshi, Apostolos Voutsas, John Hartzell
  • Publication number: 20060079100
    Abstract: A method is provided for forming a silicon nitride (SiNx) film. The method comprises: providing a Si substrate or Si film layer; optionally maintaining a substrate temperature of about 400 degrees C., or less; performing a high-density (HD) nitrogen plasma process where a top electrode is connected to an inductively coupled HD plasma source; and, forming a grown layer of SiNx overlying the substrate. More specifically, the HD nitrogen plasma process includes using an inductively coupled plasma (ICP) source to supply power to a top electrode, independent of the power and frequency of the power that is supplied to the bottom electrode, in an atmosphere with a nitrogen source gas. The SiNx layer can be grown at an initial growth rate of at least about 20 ? in about the first minute.
    Type: Application
    Filed: September 1, 2005
    Publication date: April 13, 2006
    Inventors: Pooran Joshi, Apostolos Voutsas, John Hartzell
  • Publication number: 20060073622
    Abstract: A system and method are provided for crystallizing a semiconductor film using a digital light valve. The method comprises: enabling pixel elements from an array of selectable pixel elements; in response to enabling the pixel elements, gating a light; sequentially exposing adjacent areas of a semiconductor film, such as Si, to the gated light; annealing the light-exposed areas of semiconductor film; and, in response to the annealing, laterally growing crystal grains in the semiconductor film. For example, the method may sequentially expose adjacent areas of semiconductor film to gated light in a first direction; and, simultaneously exposing adjacent areas of semiconductor film to gated light in a second direction, different than the first direction. For example, the second direction may be perpendicular to the first direction. As a result, crystal grains can be laterally grown simultaneously in the first and second directions.
    Type: Application
    Filed: September 29, 2004
    Publication date: April 6, 2006
    Inventor: John Hartzell
  • Publication number: 20050282399
    Abstract: A method is provided for electroforming metal integrated circuit structures. The method comprises: forming an opening such as a via or line through an interlevel insulator, exposing a substrate surface; forming a base layer overlying the interlevel insulator and substrate surface; forming a strike layer overlying the base layer; forming a top layer overlying the strike layer; selectively etching to remove the top layer overlying the substrate surface, exposing a strike layer surface; and, electroforming a metal structure overlying the strike layer surface. The electroformed metal structure is deposited using an electroplating or electroless deposition process. Typically, the metal is Cu, Au, Ir, Ru, Rh, Pd, Os, Pt, or Ag. The base, strike, and top layers can be deposited using physical vapor deposition (PVD), evaporation, reactive sputtering, or metal organic chemical vapor deposition (MOCVD).
    Type: Application
    Filed: June 17, 2004
    Publication date: December 22, 2005
    Inventors: David Evans, John Hartzell
  • Publication number: 20050218406
    Abstract: A method is provided for forming a low-temperature vertical gate insulator in a vertical thin-film transistor (V-TFT) fabrication process. The method comprises: forming a gate, having vertical sidewalls and a top surface, overlying a substrate insulation layer; depositing a silicon oxide thin-film gate insulator overlying the gate; plasma oxidizing the gate insulator at a temperature of less than 400° C., using a high-density plasma source; forming a first source/drain region overlying the gate top surface; forming a second source/drain region overlying the substrate insulation layer, adjacent a first gate sidewall; and, forming a channel region overlying the first gate sidewall, in the gate insulator interposed between the first and second source/drain regions. When the silicon oxide thin-film gate insulator is deposited overlying the gate a Si oxide layer, a low temperature deposition process can be used, so that a step-coverage of greater than 65% can be obtained.
    Type: Application
    Filed: May 26, 2005
    Publication date: October 6, 2005
    Inventors: Pooran Joshi, Apostolos Voutsas, John Hartzell