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: 20120298058
    Abstract: A camshaft phaser attachment system is provided for attaching a camshaft phaser to a camshaft of an internal combustion engine. The camshaft phaser attachment system includes a camshaft phaser for controllably varying the phase relationship between a crankshaft and the camshaft. The camshaft phaser attachment system also includes a camshaft phaser installation tool having a handle with a head sized to be inserted through an opening of a cover of the camshaft phaser. A plurality of notches formed on a rotor of the camshaft phaser interfit with a plurality of tangs of the head. The head includes a recess on the periphery to provide clearance relative to a bias spring capture flange extending radially inward from the opening. The head also includes a central passage extending through the head to allow a tightening tool to tighten a bolt used to hold the camshaft phaser to the camshaft.
    Type: Application
    Filed: May 27, 2011
    Publication date: November 29, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: THOMAS H. FISCHER, THOMAS H. LICHTI
  • Publication number: 20120255509
    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: Application
    Filed: April 8, 2011
    Publication date: October 11, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: THOMAS H. LICHTI, THOMAS H. FISCHER
  • Patent number: 8277837
    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: January 8, 2007
    Date of Patent: October 2, 2012
    Assignees: Entegrion, Inc., University of North Carolina at Chapel Hill
    Inventors: Thomas H. Fischer, E. Stan Eskridge, Jr., William M. Malloy, Jr., Malloy Evans
  • Publication number: 20120234275
    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: March 16, 2011
    Publication date: September 20, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: THOMAS H. FISCHER, THOMAS H. LICHTI
  • Publication number: 20120172776
    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: March 2, 2012
    Publication date: July 5, 2012
    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: 8127728
    Abstract: A vane-type camshaft phaser for varying the timing of combustion valves including a first torsional bias spring disposed on a cover plate spring guide and grounded to the cover plate and to a slot in a spring retainer to urge the rotor toward an intermediate locking position from any position retarded of the locking position. A second torsional bias spring also anchored to the cover plate and spring retainer urges the rotor in the advance direction over the full range of phaser authority to compensate for added camshaft torque loads imposed by non-valve actuating functions such as driving a mechanical fuel pump.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: March 6, 2012
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas H. Fischer, Daniel G. Gauthier
  • Publication number: 20120031359
    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: Application
    Filed: September 29, 2011
    Publication date: February 9, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Daniel R. Cuatt, Michael J. Fox, Thomas H. Fischer
  • Publication number: 20120027867
    Abstract: The present invention is directed to a method of preparing dehydrated blood products, comprising the steps of: (a) providing a hydrated blood product; (b) spray-drying the hydrated blood product to produce a dehydrated blood product, as well as dehydrated blood products made by the method. The present invention is directed to a method of treating a patient suffering from a blood-related disorder, comprising the steps of: (a) rehydrating a therapeutic amount of the dehydrated blood products to produce a rehydrated therapeutic composition; and (b) administering the rehydrated therapeutic composition to the patient. The present invention is directed to a bandage or surgical aid comprising the dehydrated blood products described above.
    Type: Application
    Filed: April 6, 2010
    Publication date: February 2, 2012
    Applicant: ENTEGRION, INC.
    Inventors: Thomas H. Fischer, Joseph A. DaCorta, Michael Lawrence Galiger
  • Patent number: 8033257
    Abstract: A vane-type camshaft phaser including a bias spring to urge the rotor toward an intermediate locking position from any rotational position retarded of the locking position. The rotor comprises non-coaxially acting primary and secondary locking pins for mating with primary and secondary locking pin seats in the phaser stator. The primary seat is elongated and is readily located by the primary locking pin to provide a first limit to the rotor phase angle authority in the retard direction. Camshaft torque reversals cause the rotor phase angle to dither. With each torque reversal the secondary locking pin passes over its seat, allowing multiple opportunities for re-engagement. The clearance of the secondary locking pin to its seat defines the rotary lash in the phaser.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: October 11, 2011
    Assignee: Delphi Technologies, Inc.
    Inventor: Thomas H. Fischer
  • Publication number: 20110215269
    Abstract: A switchable valve assembly is provided with a housing having a longitudinal bore with a spool disposed therein. The spool is selectively positioned within the longitudinal bore for controlling the flow of working fluid between a supply port and a control port and between the control port and a vent port. An actuator assembly is provided for selectively positioning the spool in the longitudinal bore. The actuator assembly includes a connecting rod for mechanically transmitting linear motion to the spool when switching from at least one valve mode to another valve mode. The connecting rod is structurally separate from the spool.
    Type: Application
    Filed: March 5, 2010
    Publication date: September 8, 2011
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Thomas H. Fischer, Michael J. Dinkel
  • Publication number: 20110151491
    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: December 17, 2010
    Publication date: June 23, 2011
    Applicant: ENTEGRION, INC.
    Inventors: Robert Glenn Dennis, Thomas H. Fischer, Joseph Anthony DaCorta
  • Patent number: 7798113
    Abstract: A two-step roller finger follower assembly for use in conjunction with a camshaft of an internal combustion engine, wherein the camshaft has at least one first lobe and at least one second lobe. The roller finger follower assembly comprises a follower body for engaging the first cam lobe and having a central aperture, a follower pivotably disposed on the follower body in the central aperture for engaging the second cam lobe, and a limiting stop disposed on the follower body for engaging a feature on the follower to limit travel of the follower body with respect to the follower. The limiting stop prevents overtravel of the follower body during valve-deactivation mode of the assembly, thus preventing excessive leak down of an associated hydraulic lash adjuster.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: September 21, 2010
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas H. Fischer, Andrew J. Lipinski, Hermes A. Fernandez, Timothy W. Kunz, Richard B. Roe
  • Patent number: 7721692
    Abstract: During assembly of an improved phaser, a rotor bias spring is captured by a spring retainer that is fitted or formed into the cover, allowing the spring to be installed in a pre-load position and forming a sub-assembly that is then attached to the remaining components. Grounded and active spring tangs are captured in separate slots in the spring retainer. A pocket within the rotor receives the active tang of the bias spring. The pocket has a tapered bottom ramp that lifts the active tang from the slot wall in the retainer and positions the active tang within the pocket in a retarding direction. Lifting the active tang of the bias spring prevents friction between the spring and the retainer slot wall as would occur as the rotor moves in a retarded direction. In advancing, spring rotation stops when the active tang contacts the end of the retainer slot.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: May 25, 2010
    Assignee: Delphi Technologies, Inc.
    Inventor: Thomas H. Fischer
  • Patent number: 7614370
    Abstract: A vane-type camshaft phaser for varying the timing of combustion valves in an internal combustion engine includes a seat formed in the sprocket at the appropriate position of intermediate rotation and a locking pin slidably disposed in a vane of the rotor for engaging the seat to lock the rotor at the intermediate position. A bias spring system disposed on a cover plate urges the rotor toward the locking position from any position retarded of the locking position. A first spring system embodiment comprises a pair of compression spring assemblies. A second spring system embodiment comprises an internal torsion spring. In each embodiment, the phaser may be assembled without having the spring system coupled to the rotor, thereby overcoming a rotor cocking problem inherent in prior art phasers, assuring reliable mounting of an assembled phaser onto an engine camshaft.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: November 10, 2009
    Assignee: Delphi Technologies, Inc.
    Inventors: Thomas H. Fischer, Dominic Borraccia
  • Publication number: 20090266322
    Abstract: A vane-type camshaft phaser including a bias spring to urge the rotor toward an intermediate locking position from any rotational position retarded of the locking position. The rotor comprises non-coaxially acting primary and secondary locking pins for mating with primary and secondary locking pin seats in the phaser stator. The primary seat is elongated and is readily located by the primary locking pin to provide a first limit to the rotor phase angle authority in the retard direction. Camshaft torque reversals cause the rotor phase angle to dither. With each torque reversal the secondary locking pin passes over its seat, allowing multiple opportunities for re-engagement. The clearance of the secondary locking pin to its seat defines the rotary lash in the phaser.
    Type: Application
    Filed: April 28, 2008
    Publication date: October 29, 2009
    Inventor: Thomas H. Fischer
  • Publication number: 20090235884
    Abstract: A vane-type camshaft phaser for varying the timing of combustion valves including a first torsional bias spring disposed on a cover plate spring guide and grounded to the cover plate and to a slot in a spring retainer to urge the rotor toward an intermediate locking position from any position retarded of the locking position. A second torsional bias spring also anchored to the cover plate and spring retainer urges the rotor in the advance direction over the full range of phaser authority to compensate for added camshaft torque loads imposed by non-valve actuating functions such as driving a mechanical fuel pump.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 24, 2009
    Inventors: Thomas H. Fischer, Daniel G. Gauthier
  • Publication number: 20090069097
    Abstract: During assembly of an improved phaser, a rotor bias spring is captured by a spring retainer that is fitted or formed into the cover, allowing the spring to be installed in a pre-load position and forming a sub-assembly that is then attached to the remaining components. Grounded and active spring tangs are captured in separate slots in the spring retainer. A pocket within the rotor receives the active tang of the bias spring. The pocket has a tapered bottom ramp that lifts the active tang from the slot wall in the retainer and positions the active tang within the pocket in a retarding direction. Lifting the active tang of the bias spring prevents friction between the spring and the retainer slot wall as would occur as the rotor moves in a retarded direction. In advancing, spring rotation stops when the active tang contacts the end of the retainer slot.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 12, 2009
    Inventor: Thomas H. Fischer
  • Publication number: 20090053288
    Abstract: The present invention is directed to a woven fabric having the modified crowsfoot weave pattern shown in FIGS. 2A and 2B. The present invention is directed to a woven fabric comprising about 65 wt % fiberglass yarn and about 35 wt % bamboo yarn, the woven fabric (1) being about 15.0 ounces per square yard (OSY); (2) having a thread count of about 760; and (3) having the modified crowsfoot weave pattern shown in FIGS. 2A and 2B. Additional ingredients may also be added to the woven fabrics of the invention to enhance the hemostatic properties.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 26, 2009
    Inventors: E. Stan Eskridge, JR., Thomas H. Fischer, James V. Snipes
  • Publication number: 20080314340
    Abstract: A two-step roller finger follower assembly for use in conjunction with a camshaft of an internal combustion engine, wherein the camshaft has at least one first lobe and at least one second lobe. The roller finger follower assembly comprises a follower body for engaging the first cam lobe and having a central aperture, a follower pivotably disposed on the follower body in the central aperture for engaging the second cam lobe, and a limiting stop disposed on the follower body for engaging a feature on the follower to limit travel of the follower body with respect to the follower. The limiting stop prevents overtravel of the follower body during valve-deactivation mode of the assembly, thus preventing excessive leak down of an associated hydraulic lash adjuster.
    Type: Application
    Filed: June 20, 2007
    Publication date: December 25, 2008
    Inventors: Thomas H. Fischer, Andrew J. Lipinski, Hermes A. Fernandez, Timothy W. Kunz, Richard B. Roe
  • Publication number: 20080286366
    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: Application
    Filed: April 29, 2008
    Publication date: November 20, 2008
    Inventors: Thomas H. Fischer, E. Stan Eskridge, JR.