Patents by Inventor David R. Sosnowski

David R. Sosnowski 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: 7707872
    Abstract: A manufacturing process, system, and method is described that facilitates the assembly and testing of a hydraulic manifold with integral closed loop pressure sensing and feedback.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: May 4, 2010
    Assignee: Eaton Corporation
    Inventors: David E. Herbert, David R. Sosnowski
  • Publication number: 20080072657
    Abstract: A manufacturing process, system, and method is described that facilitates the assembly and testing of a hydraulic manifold with integral closed loop pressure sensing and feedback.
    Type: Application
    Filed: September 25, 2006
    Publication date: March 27, 2008
    Inventors: David E. Herbert, David R. Sosnowski
  • Patent number: 7194349
    Abstract: A system for controlling pressure in a transmission comprises a transmission control unit, a valve controller that receives a desired pressure as input from the transmission control unit, a valve driver, a valve that regulates an amount of fluid in a transmission clutch, and a pressure transducer that reads a pressure in the transmission clutch and outputs a pressure reading to the valve controller, wherein the valve controller comprises logic for outputting to the valve driver an instruction for controlling the valve, the instruction being formulated using the desired pressure and the pressure reading.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: March 20, 2007
    Assignee: Eaton Corporation
    Inventors: Ananthakrishnan Surianarayanan, David R. Sosnowski, Mark L. Dell′ Eva, Peter M. Jacobsen, Eric O. Barrows
  • Patent number: 7043372
    Abstract: Impedance spectroscopy is used to determine values associated with properties of a substance such as a fluid. In some embodiments, the present invention is applied to engine lubricants. A spectral matrix is constructed that comprises data taken from spectral plots. Also constructed is a result matrix comprising known quantities of a plurality of fluid constituents. A known analytic technique is performed on the spectral matrix to identify at least one principal component having significant influence on the spectral matrix. A reduced spectral matrix, wherein each column in the reduced spectral matrix is associated with a principal component having significant influence on the spectral matrix, is next created. A statistical technique uses the reduced spectral matrix and the result matrix to create at least one prediction equation. The prediction equation is used to predict at least one property in a second substance in situ.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: May 9, 2006
    Assignee: Eaton Corporation
    Inventors: Charles J. Koehler, David L. Wooton, David R. Sosnowski, Richard W. Hirthe
  • Patent number: 6989680
    Abstract: An impedance spectroscopy technique and system for detecting in real time engine coolant contamination in lubricant. A probe is disposed in the lubricant and the probe excited with an a.c. voltage frequency sweep over a selected frequency range. The current and current phase angle are measured at selected frequency intervals and the reactance and resistance computed and plotted at each frequency internal as Nyquist plots. The Nyquist minimum is determined at various lubricant temperatures and a database compiled. The probe is then excited in-situ and current measurements taken for a selected frequency lower than the Nyquist minimum to insure measurement of electrode surfaces characteristics. The reactance and resistance are then computed and the angle ? of change (slope) of reactance with respect to resistance computed. The value of ? is then compared with values of contamination concentration ? versus ? in a database, and the value of ? determined by interpolation.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: January 24, 2006
    Assignee: Eaton Corporation
    Inventors: David R. Sosnowski, Richard W. Hirthe
  • Patent number: 6984986
    Abstract: A database is compiled of values of the frequency fNM corresponding to the minimum reactance Z?MIN (Nyquist minimum) versus temperature TL over a selected range of temperatures for a probe immersed in a sample of the fluid to be monitored and excited by an a.c. voltage and the frequency swept over a range to cover both bulk fluid and electrode interface impedance characteristics. The probe is then excited in situ and the temperature measured. The Nyquist minimum is then determined from the database and the current measured on the low frequency (interfacial) side of the Nyquist minimum. The angle ? of the rate of change of resistance Z? with respect to resistance Z? and magnitude of the impedance ZS is then determined from the current measurement; and, the fluid condition ? determined from a previously compiled database of values of ?, ZS and ?.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: January 10, 2006
    Assignee: Eaton Corporation
    Inventors: David R. Sosnowski, Gordon M. Fincannon
  • Patent number: 6895798
    Abstract: A method of calibrating a solenoid operated pressure control valve by sweeping the solenoid with increasing current from a minimum to a maximum and measuring and recording the signal pressure output and current at selected increments of current and storing the data pairs in a first table. The solenoid is similarly swept with decreasing current from the maximum to a minimum and the signal output pressure measured at selected increments of current and the data pairs stored in a second table. Upon installation of the valve in an hydraulic system to be controlled, the commanded signal pressure output Pc, if greater than the instantaneous signal pressure output P2 is compared with the closest data pairs in the first table and, by interpolation, the required solenoid energization current Ie determined.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: May 24, 2005
    Assignee: Eaton Corporation
    Inventor: David R. Sosnowski
  • Publication number: 20040206155
    Abstract: A method of calibrating a solenoid operated pressure control valve by sweeping the solenoid with increasing current from a minimum to a maximum and measuring and recording the signal pressure output and current at selected increments of current and storing the data pairs in a first table. The solenoid is similarly swept with decreasing current from the maximum to a minimum and the signal output pressure measured at selected increments of current and the data pairs stored in a second table. Upon installation of the valve in an hydraulic system to be controlled, the commanded signal pressure output Pc, if greater than the instantaneous signal pressure output P2 is compared with the closest data pairs in the first table and, by interpolation, the required solenoid energization current Ie determined.
    Type: Application
    Filed: April 16, 2003
    Publication date: October 21, 2004
    Applicant: EATON CORPORATION
    Inventor: David R. Sosnowski
  • Patent number: 6412335
    Abstract: A solenoid operated valve is connected in series with a resistor and a PTC thermistor. Upon coil energization, the armature moves to close the valve member against a valve seat and further armature movement to close an air gap with a pole piece is absorbed by a spring between the armature and valve member. Upon closure of the air gap, the magnetic reluctance between the armature and pole piece is decreased such that significantly less current is required in the coil to hold the valve closed. Upon heating of the thermistor, the resistance is increased sufficiently to reduce the current to the hold-close level and less power is required thereafter to maintain the valve closed. The valve is applied to on-board vehicle diagnostic procedures performed after engine shut-down where current must be minimized to prevent battery drain to a level preventing re-start.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: July 2, 2002
    Assignee: Eaton Corporation
    Inventors: Charles A. Detweiler, Daniel L. DeLand, Gerrit V. Beneker, David R. Sosnowski