Patents by Inventor Thomas H. Fischer

Thomas H. Fischer 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: 20160130989
    Abstract: A camshaft phaser includes a stator having a plurality of lobes; a rotor coaxially disposed within the stator and having a plurality of vanes interspersed with the lobes defining advance chambers and retard chambers; a camshaft phaser attachment bolt for attaching the camshaft phaser to a camshaft, the camshaft phaser attachment bolt defining a valve bore that is coaxial with the stator. A supply passage extends radially outward from the valve bore and includes a downstream end that is proximal to the valve bore and an upstream end that is distal from the valve bore and separated from the downstream end by a check valve seat. A check valve member in the supply passage is biased toward the check valve seat by centrifugal force. A valve spool is moveable within the valve bore such that the valve spool directs oil that has passed through the supply passage.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 12, 2016
    Inventors: THOMAS H. FISCHER, KARL J. HALTINER, JR.
  • Publication number: 20150260060
    Abstract: A camshaft phaser includes a stator having a plurality of lobes and a rotor coaxially disposed within the stator and having a plurality of vanes interspersed with the lobes defining a plurality of alternating advance chambers and retard chambers such that a phasing valve supplies and vents oil to and from the advance and retard chambers. A first check valve allows oil to flow from only one of the retard chambers to only one of the advance chambers when a first diverter valve permits communication between the one of the advance chambers and the first check valve and a second check valve allows oil to flow from the one of the advance chambers to the one of the retard chambers when a second diverter valve permits communication between the one of the retard chambers and the second check valve.
    Type: Application
    Filed: February 24, 2015
    Publication date: September 17, 2015
    Inventors: THOMAS H. FISCHER, THOMAS H. LICHTI, CAI P. SHUM, JEREMY N. GRAVES
  • Patent number: 9127575
    Abstract: A camshaft phaser is provided for varying the phase relationship between a crankshaft and a camshaft in an engine. The camshaft phaser includes a stator having lobes. A rotor is disposed within the stator includes vanes interspersed with the stator lobes to define alternating advance and retard chambers. A lock pin is provided for selective engagement with a lock pin seat for preventing relative rotation between the rotor and the stator. Pressurized oil disengages the lock pin from the seat while oil is vented for engaging the lock pin with the seat. A phase relationship control valve is coaxial with the rotor and controls the flow of oil into and out of the chambers. A lock pin control valve is coaxial with the phase relationship control valve and controls the flow of oil to and from the lock pin. The control valves are operational independent of each other.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: September 8, 2015
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas H. Fischer, Thomas H. Lichti
  • Patent number: 9063161
    Abstract: A device, system and method is disclosed in which small volume blood samples are subjected to shear forces and shear stresses between two parallel planar surfaces to which linear motion trajectories are imparted. The formation of clots or coagulation of the sample is measured from dynamic mechanical coupling which occurs between the two parallel planar surfaces. Detection of the coagulation response can be achieved through optical probing or by measurement of physical effects of the blood sample binding to the planar surfaces, and restricting movement thereof.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: June 23, 2015
    Assignee: Entegrion, Inc.
    Inventors: Robert Glenn Dennis, Thomas H. Fischer, Joseph Anthony DaCorta
  • Patent number: 8881698
    Abstract: A vane-type camshaft phaser for an internal combustion engine includes an intermediate locking pin and seat for locking the camshaft phaser at a position intermediate of its full advanced and retard positions. A feature is provided for radially orienting the locking pin with the seat.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: November 11, 2014
    Assignee: Delphi Technologies, Inc.
    Inventors: Daniel R. Cuatt, Michael J. Fox, Thomas H. Fischer
  • Publication number: 20140083385
    Abstract: A camshaft phaser is provided for varying the phase relationship between a crankshaft and a camshaft in an engine. The camshaft phaser includes a stator having lobes. A rotor is disposed within the stator includes vanes interspersed with the stator lobes to define alternating advance and retard chambers. A lock pin is provided for selective engagement with a lock pin seat for preventing relative rotation between the rotor and the stator. Pressurized oil disengages the lock pin from the seat while oil is vented for engaging the lock pin with the seat. A phase relationship control valve is coaxial with the rotor and controls the flow of oil into and out of the chambers. A lock pin control valve is coaxial with the phase relationship control valve and controls the flow of oil to and from the lock pin. The control valves are operational independent of each other.
    Type: Application
    Filed: November 27, 2013
    Publication date: March 27, 2014
    Inventors: THOMAS H. FISCHER, THOMAS H. LICHTI
  • Patent number: 8677961
    Abstract: A camshaft phaser includes a housing. A harmonic gear drive unit is disposed within the housing and includes a circular spline and a dynamic spline, a flexspline disposed within the circular spline and the dynamic spline, a wave generator disposed within the flexspline, and a rotational actuator connectable to the wave generator. One of the circular spline and the dynamic spline is fixed to the housing. A hub is rotatably disposed within the housing and attachable to the camshaft and fixed to the other of the circular spline and the dynamic spline. A lock pin is provided for selective engagement with a lock pin seat such that engagement of the lock pin with the lock pin seat prevents relative rotation between the circular spline and the dynamic spline.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: March 25, 2014
    Assignee: Delphi Technologies, Inc.
    Inventor: Thomas H. Fischer
  • Patent number: 8662039
    Abstract: A camshaft phaser is provided for varying the phase relationship between a crankshaft and a camshaft in an engine. The camshaft phaser includes a stator having lobes. A rotor is disposed within the stator includes vanes interspersed with the stator lobes to define alternating advance and retard chambers. A lock pin is provided for selective engagement with a lock pin seat for preventing relative rotation between the rotor and the stator. Pressurized oil disengages the lock pin from the seat while oil is vented for engaging the lock pin with the seat. A phase relationship control valve is coaxial with the rotor and controls the flow of oil into and out of the chambers. A lock pin control valve is coaxial with the phase relationship control valve and controls the flow of oil to and from the lock pin. The control valves are operational independent of each other.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: March 4, 2014
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas H. Fischer, Thomas H. Lichti
  • Patent number: 8609130
    Abstract: The present invention is directed to a hemostatic textile, comprising: a material comprising a combination of glass fibers and one or more secondary fibers selected from the group consisting of silk fibers; ceramic fibers; raw or regenerated bamboo fibers; cotton fibers; rayon fibers; linen fibers; ramie fibers; jute fibers; sisal fibers; flax fibers; soybean fibers; corn fibers; hemp fibers; lyocel fibers; wool; lactide and/or glycolide polymers; lactide/glycolide copolymers; silicate fibers; polyamide fibers; feldspar fibers; zeolite fibers, zeolite-containing fibers, acetate fibers; and combinations thereof; the hemostatic textile capable of activating hemostatic systems in the body when applied to a wound. Additional cofactors such as thrombin and hemostatic agents such as RL platelets, RL blood cells; fibrin, fibrinogen, and combinations thereof may also be incorporated into the textile. The invention is also directed to methods of producing the textile, and methods of using the textile to stop bleeding.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: December 17, 2013
    Assignees: The University of North Carolina at Chapel Hill, Entegrion, Inc.
    Inventors: Thomas H. Fischer, E. Stan Eskridge, Jr., William M. Malloy, Jr., Malloy Evans
  • Patent number: 8607823
    Abstract: A valve assembly includes a housing with a supply port receiving working fluid from a working fluid source, a control port connected to a working device, and a vent port for returning working fluid to the working fluid source. A spool with a spool bore in fluid communication with the control port controls the flow of working fluid between the supply port and the control port and between the control port and the vent port. An actuator assembly selectively alters the position of the spool. In a high pressure mode, the supply port is in fluid communication with the spool bore at a first pressure. In a pressure relief mode, the vent port is in fluid communication with the spool bore. In a pressure regulating mode, the supply port is in fluid communication with the spool bore at a second pressure which is less than the first pressure.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: December 17, 2013
    Assignee: Delphi Technologies, Inc.
    Inventor: Thomas H. Fischer
  • Publication number: 20130267017
    Abstract: A device, system and method is disclosed in which small volume blood samples are subjected to shear forces and shear stresses between two parallel planar surfaces to which linear motion trajectories are imparted. The formation of clots or coagulation of the sample is measured from dynamic mechanical coupling which occurs between the two parallel planar surfaces. Detection of the coagulation response can be achieved through optical probing or by measurement of physical effects of the blood sample binding to the planar surfaces, and restricting movement thereof.
    Type: Application
    Filed: May 20, 2013
    Publication date: October 10, 2013
    Applicant: Entegrion, Inc.
    Inventors: Robert Glenn Dennis, Thomas H. Fischer, Joseph Anthony DaCorta
  • Patent number: 8534246
    Abstract: A camshaft phaser is provided for varying the phase relationship between a crankshaft and a camshaft in an engine. The camshaft phaser includes a stator having lobes. A rotor disposed within the stator includes vanes interspersed with the stator lobes to define alternating advance and retard chambers. A lock pin is provided for selective engagement with a lock pin seat for preventing relative rotation between the rotor and stator. Pressurized oil disengages the lock pin from the seat while oil is vented for engaging the lock pin with the seat. A phase relationship control valve is located coaxially within the rotor to control the flow of oil into and out of the chambers. A lock pin oil passage communicates oil to and from the lock pin based on input from a lock pin control valve located outside of the camshaft phaser. The control valves are operational independent of each other.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: September 17, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas H. Lichti, Thomas H. Fischer
  • Patent number: 8512697
    Abstract: The invention is directed to platelets containing micron or nanometer size particles wherein the micron or nanometer sized particles comprises an active agent. The invention is also directed to a pharmaceutical composition comprising a pharmaceutically acceptable carrier and the above platelets. The invention is further directed to methods of delivering the micron or nanometer size particles containing an active agent to a site of interest in a patient.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: August 20, 2013
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Thomas H. Fischer, E. Stan Eskridge, Jr., Timothy C. Nichols, Caterina Maria Gallippi
  • Patent number: 8450078
    Abstract: A device, system and method is disclosed in which small volume blood samples are subjected to shear forces and shear stresses between two parallel planar surfaces to which linear motion trajectories are imparted. The formation of clots or coagulation of the sample is measured from dynamic mechanical coupling which occurs between the two parallel planar surfaces. Detection of the coagulation response can be achieved through optical probing or by measurement of physical effects of the blood sample binding to the planar surfaces, and restricting movement thereof.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: May 28, 2013
    Assignee: Entegrion, Inc.
    Inventors: Robert Glenn Dennis, Thomas H. Fischer, Joseph Anthony DaCorta
  • Publication number: 20130102946
    Abstract: The present invention is directed to a hemostatic textile, comprising: a material comprising a combination of glass fibers and one or more secondary fibers selected from the group consisting of silk fibers; ceramic fibers; raw or regenerated bamboo fibers; cotton fibers; rayon fibers; linen fibers; ramie fibers; jute fibers; sisal fibers; flax fibers; soybean fibers; corn fibers; hemp fibers; lyocel fibers; wool; lactide and/or glycolide polymers; lactide/glycolide copolymers; silicate fibers; polyamide fibers; feldspar fibers; zeolite fibers, zeolite-containing fibers, acetate fibers; and combinations thereof; the hemostatic textile capable of activating hemostatic systems in the body when applied to a wound. Additional cofactors such as thrombin and hemostatic agents such as RL platelets, RL blood cells; fibrin, fibrinogen, and combinations thereof may also be incorporated into the textile. The invention is also directed to methods of producing the textile, and methods of using the textile to stop bleeding.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 25, 2013
    Applicants: ENTEGRION, INC., THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
    Inventors: Thomas H. Fischer, E. Stan Eskridge,, JR., William M. Malloy, JR., Malloy Evans
  • Publication number: 20130072842
    Abstract: The present invention is directed to a hemostatic textile, comprising: a material comprising a combination of glass fibers and one or more secondary fibers selected from the group consisting of silk fibers; ceramic fibers; raw or regenerated bamboo fibers; cotton fibers; rayon fibers; linen fibers; ramie fibers; jute fibers; sisal fibers; flax fibers; soybean fibers; corn fibers; hemp fibers; lyocel fibers; wool; lactide and/or glycolide polymers; lactide/glycolide copolymers; silicate fibers; polyamide fibers; feldspar fibers; zeolite fibers, zeolite-containing fibers, acetate fibers; and combinations thereof; the hemostatic textile capable of activating hemostatic systems in the body when applied to a wound. Additional cofactors such as thrombin and hemostatic agents such as RL platelets, RL blood cells; fibrin, fibrinogen, and combinations thereof may also be incorporated into the textile. The invention is also directed to methods of producing the textile, and methods of using the textile to stop bleeding.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 21, 2013
    Applicants: ENTEGRION, INC., THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
    Inventors: Thomas H. Fischer, E. Stan Eskridge,, JR., William M. Malloy, JR., Malloy Evans
  • Patent number: 8387578
    Abstract: A camshaft phaser is provided for varying the phase relationship between a crankshaft and a camshaft in an engine. The camshaft phaser includes a stator having lobes. A rotor is disposed within the stator and includes vanes interspersed with the stator lobes to define alternating advance and retard chambers. A primary lock pin is provided for selective engagement with a primary lock pin seat for limiting rotation between the rotor and stator to a range between full advance and full retard. A secondary lock pin is provided for selective engagement with a secondary lock pin seat for preventing rotation between the rotor and the stator at a predetermined position within the range. A cap is disposed axially adjacent the rotor to define a bridging lock pin oil passage therebetween. The bridging lock pin oil passage provides fluid communication between the primary lock pin and the secondary lock pin.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: March 5, 2013
    Assignee: Delphi Technologies, Inc.
    Inventor: Thomas H. Fischer
  • Patent number: 8377467
    Abstract: The present invention is directed to a hemostatic textile, comprising: a material comprising a combination of glass fibers and one or more secondary fibers selected from the group consisting of silk fibers; ceramic fibers; raw or regenerated bamboo fibers; cotton fibers; rayon fibers; linen fibers; ramie fibers; jute fibers; sisal fibers; flax fibers; soybean fibers; corn fibers; hemp fibers; lyocel fibers; wool; lactide and/or glycolide polymers; lactide/glycolide copolymers; silicate fibers; polyamide fibers; feldspar fibers; zeolite fibers, zeolite-containing fibers, acetate fibers; and combinations thereof; the hemostatic textile capable of activating hemostatic systems in the body when applied to a wound. Additional cofactors such as thrombin and hemostatic agents such as RL platelets, RL blood cells; fibrin, fibrinogen, and combinations thereof may also be incorporated into the textile. The invention is also directed to methods of producing the textile, and methods of using the textile to stop bleeding.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: February 19, 2013
    Assignees: The University of North Carolina at Chapel Hill, Entegrion, Inc
    Inventors: Thomas H. Fischer, E. Stan Eskridge, Jr., William M. Malloy, Jr., Malloy Evans
  • Publication number: 20130019825
    Abstract: A camshaft phaser includes a housing. A harmonic gear drive unit is disposed within the housing and includes a circular spline and a dynamic spline, a flexspline disposed within the circular spline and the dynamic spline, a wave generator disposed within the flexspline, and a rotational actuator connectable to the wave generator. One of the circular spline and the dynamic spline is fixed to the housing. A hub is rotatably disposed within the housing and attachable to the camshaft and fixed to the other of the circular spline and the dynamic spline. A lock pin is provided for selective engagement with a lock pin seat such that engagement of the lock pin with the lock pin seat prevents relative rotation between the circular spline and the dynamic spline.
    Type: Application
    Filed: July 18, 2011
    Publication date: January 24, 2013
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventor: THOMAS H. FISCHER
  • Publication number: 20120318219
    Abstract: A camshaft phaser is provided for varying the phase relationship between a crankshaft and a camshaft in an engine. The camshaft phaser includes a stator having lobes. A rotor is disposed within the stator and includes vanes interspersed with the stator lobes to define alternating advance and retard chambers. A primary lock pin is provided for selective engagement with a primary lock pin seat for limiting rotation between the rotor and stator to a range between full advance and full retard. A secondary lock pin is provided for selective engagement with a secondary lock pin seat for preventing rotation between the rotor and the stator at a predetermined position within the range. A cap is disposed axially adjacent the rotor to define a bridging lock pin oil passage therebetween. The bridging lock pin oil passage provides fluid communication between the primary lock pin and the secondary lock pin.
    Type: Application
    Filed: June 14, 2011
    Publication date: December 20, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventor: THOMAS H. FISCHER