Patents by Inventor Andreas Strauss

Andreas Strauss 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: 20050274344
    Abstract: A hydraulic device for adjusting the rotation angle of a camshaft relative to a crankshaft in an internal combustion engine. The device has a rotor, with blades arranged around its periphery. A stator is connected in a rotationally secure manner to a drive wheel. The rotor and the stator together form pressure chambers, which can be filled with hydraulic fluid via a hydraulic fluid system, in which there is disposed a volume accumulator.
    Type: Application
    Filed: June 14, 2005
    Publication date: December 15, 2005
    Inventors: Jochen Auchter, Andreas Strauss, Lutz Witthoft, Michael Busse, Dirk Heintzen, Jurgen Plate
  • Publication number: 20050252561
    Abstract: A control valve for a device for changing the control times of an internal combustion engine, having a substantially hollow-cylindrical valve housing, a control piston which is arranged within the valve housing and can be displaced axially, a pressure medium connection, two operating connections, and at least one tank connection. The operating connections, the pressure medium connection and the tank connection are formed as radial connections. It is possible for the operating connections to be connected to the pressure medium connection and the tank connection by axial displacement of the control piston within the valve housing. The operating connections are arranged adjacently.
    Type: Application
    Filed: May 12, 2005
    Publication date: November 17, 2005
    Inventors: Andreas Strauss, Andreas Rohr, Jens Hoppe
  • Publication number: 20050252467
    Abstract: A device for changing the control times of an internal combustion engine (camshaft adjuster (1)) having a pressure medium distributor (21) arranged within a camshaft (11) is provided. The pressure medium distributor (21) is provided at its front end with a radially extending shoulder (42), this shoulder (42) forming part of the camshaft axial mounting.
    Type: Application
    Filed: May 9, 2005
    Publication date: November 17, 2005
    Applicant: INA-Schaeffler KG
    Inventors: Andreas Strauss, Andreas Rohr, Jens Hoppe, Viktor Lichtenwald, Jochen Auchter, Rainer Ottersbach
  • Patent number: 6892685
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: May 17, 2005
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Patent number: 6889641
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: May 10, 2005
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Patent number: 6827053
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: December 7, 2004
    Assignee: Ina Walzlager
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Publication number: 20040216709
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Application
    Filed: December 15, 2003
    Publication date: November 4, 2004
    Applicant: INA WALZLAGER
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Publication number: 20040211312
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Application
    Filed: December 15, 2003
    Publication date: October 28, 2004
    Applicant: INA WALZLAGER SCHAEFFLER oHG
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Patent number: 6805080
    Abstract: A device for changing the control times of gas exchange valves of an internal combustion engine, including a drive wheel in driving connection with a crankshaft and a vane wheel connected to rotate with a camshaft. A plurality of hydraulic working spaces are formed within the device and are divided by the vanes of the vane wheel into respectively A and B pressure chambers. The vane wheel can be mechanically coupled to the drive wheel by a locking element, which is displaceable by a spring element into a locking position within a seat in one of the sidewalls of the drive wheel, and is hydraulically moved into an unlocked position in the vane wheel upon application of pressure to the pressure chambers. The locking element is a generally uniform cylindrical locking pin, and is arranged in an axial bore in the hub of the vane wheel. The longitudinal axis of the axial bore has a smallest possible distance from the longitudinal mid-axis of the device.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: October 19, 2004
    Assignee: INA-Schaeffler KG
    Inventors: Eduard Golovatai-Schmidt, Jens Schafer, Andreas Strauss, Martin Scheidt
  • Publication number: 20040194617
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Application
    Filed: December 15, 2003
    Publication date: October 7, 2004
    Applicant: INA WALZLAGER
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Patent number: 6701877
    Abstract: The invention concerns a control device for adjusting the relative angular position of a driven shaft, particularly a camshaft of an internal combustion engine, said device comprising a drive pinion that is rotatably connected to the shaft, an adjusting element (1) for the angular adjustment of the drive pinion relative to the shaft, two chambers (2, 3) that are alternately supplied with hydraulic fluid and a control valve (6) for actuating the adjusting element (1), said control valve being connected to the chambers (2, 3) of the adjusting element (1) through pressure medium channels (4, 5). The control valve (6) comprises a valve body (7) that has two working connections A and B for the pressure medium channels (4, 5), a delivery connection P for the supply of hydraulic fluid and a discharge connection T for the discharge of hydraulic fluid, and the control valve (6) further comprises a sliding valve control piston (8) for setting different hydraulic resistances W between the individual connections.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: March 9, 2004
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Rainer Ottersbach, Andreas Strauss, Mike Kohrs, Jochen Auchter
  • Publication number: 20030143563
    Abstract: A method for identifying a nucleic acid which codes for a polypeptide factor affecting the covalent bonding of polypeptides to the surface of Gram-positive bacteria, comprising the following steps:
    Type: Application
    Filed: July 23, 2002
    Publication date: July 31, 2003
    Applicant: Evotec BioSystems AG of Schnackenburgallee 114
    Inventors: Andreas Strauss, Gunther Thumm, Johannes Pohlner, Friedrich Gotz
  • Publication number: 20030121485
    Abstract: A hydraulic camshaft adjuster for adjusting the angle of rotation of the camshaft of an internal combustion engine relative to its crankshaft, including an external rotor connected in a rotationally fixed manner to a driving wheel, and an internal rotor connected in a rotationally fixed manner to a driving wheel, and an internal rotor connected in a rotationally fixed manner to a camshaft, the external rotor having at least one hydraulic chamber with radial partitions and two side walls, and the internal rotor having a hub with at least one hydraulically swiveling blade which divides the hydraulic chamber into two working chambers operated by oil pressure which is controlled by an electronic regulator via a control valve. The swiveling blade having, between stops, a base position which can be locked by pins in grooves.
    Type: Application
    Filed: November 20, 2002
    Publication date: July 3, 2003
    Applicant: Ina-Schaeffler KG
    Inventor: Andreas Strauss
  • Patent number: 6566062
    Abstract: A method for identifying a nucleic acid which codes for a polypeptide factor affecting the covalent bonding of polypeptides to the surface of Gram-positive bacteria, comprising the following steps: a) providing a sample of Gram-positive bacteria which can be genetically altered and contain or produce at least one enzymatic reporter substance which is or can become covalently bonded to the surface of the Gram-positive bacteria, said at least one reporter substance having a different enzymatic activity when not covalently bonded to the surface of the Gram-positive bacteria from that exhibited when it is covalently bonded to the surface of the Gram-positive bacteria; b) causing genetic alterations in Gram-positive bacteria of the sample; c) assaying the enzymatic activity of the reporter substance of the Gram-positive bacteria of the sample; d) separating Gram-positive bacteria which exhibit a different enzymatic activity of the reporter substance from that observed for covalent bonding of the reporter subst
    Type: Grant
    Filed: May 2, 2000
    Date of Patent: May 20, 2003
    Assignee: Evotec BioSystems AG
    Inventors: Andreas Strauss, Gunther Thumm, Johannes Pohlner, Friedrich Götz
  • Publication number: 20030084863
    Abstract: A device for changing the control times of gas exchange valves of an internal combustion engine, including a drive wheel in driving connection with a crankshaft and a vane wheel connected to rotate with a camshaft. A plurality of hydraulic working spaces are formed within the device and are divided by the vanes of the vane wheel into respectively A and B pressure chambers. The vane wheel can be mechanically coupled to the drive wheel by a locking element, which is displaceable by a spring element into a locking position within a seat in one of the sidewalls of the drive wheel, and is hydraulically moved into an unlocked position in the vane wheel upon application of pressure to the pressure chambers. The locking element is a generally uniform cylindrical locking pin, and is arranged in an axial bore in the hub of the vane wheel. The longitudinal axis of the axial bore has a smallest possible distance from the longitudinal mid-axis of the device.
    Type: Application
    Filed: October 15, 2002
    Publication date: May 8, 2003
    Applicant: INA-Schaeffler KG
    Inventors: Eduard Golovatai-Schmidt, Jens Schafer, Andreas Strauss, Martin Scheidt
  • Patent number: 6516763
    Abstract: A method of actuating a device for varying the valve timing of an internal combustion engine without jamming of the locking element during starting of the internal combustion engine, the solenoid of the hydraulic valve is at first energized through a number of high frequency cycles of high and low energization that are broken off after a defined period of time or after a defined number of cycles, followed by a renewed energization of the solenoid with a high energization with a simultaneous check by the microprocessor to determine whether the element fixed to the camshaft has been angularly displaced relative to the element fixed to the crankshaft out of its basic position whereby if the microprocessor determines that the element fixed to the crankshaft is still in the basic position, the first two phases of energization are repeated and the microprocessor has determined an angular displacement of the element fixed to the camshaft, the solenoid is energized with a current defined by the microprocessor which i
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: February 11, 2003
    Assignee: INA Walzlager Schaeffler oHG
    Inventor: Andreas Strauss
  • Patent number: 6453858
    Abstract: The invention concerns a device for varying valve timing of gas exchange valves of an internal combustion engine, particularly a hydraulic camshaft adjusting device of a rotary piston type, said device comprising a drive pinion (2) connected in driving relationship to a crankshaft of the internal combustion engine and a winged wheel (3) connected rotationally fast to a camshaft of the internal combustion engine. The drive pinion (2) comprises a hollow space formed by a circumferential wall (4) and two side walls (5, 6), at least one hydraulic working chamber (10) being formed in the hollow space by at least two limiting walls (8, 9). The winged wheel (3) comprises at least one radial wing (12), and with each wing (12) it divides one hydraulic working chamber (10) into two hydraulic pressure chambers (13, 14) which, when pressurized by a hydraulic pressure medium effect a pivoting or a fixing of the winged wheel (3) relative to the drive pinion (2).
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: September 24, 2002
    Assignee: INA Walzlager Schaeffler oHG
    Inventors: Martin Scheidt, Andreas Strauss, Michael Haag
  • Patent number: 6418893
    Abstract: The invention relates to a hydraulic camshaft adjusting device (1) of a rotary piston type that is disposed on a camshaft (3) mounted in the cylinder head (2) of an internal combustion engine and comprises a drive pinion (4) that is in driving relation with a crankshaft through a gearing (6), and a winged wheel (5) that is fixedly mounted on the camshaft (3). The drive pinion (4) is made up of a circumferential wall (7), a camshaft-distal side wall (8) and a camshaft-proximate side wall (9), which walls (7, 8, 9) together define a hollow space (10) in which at least one hydraulic working chamber is formed by at least two limiting walls (11). The winged wheel (5) comprises at least one wing (14), and each wing (14) divides a hydraulic working chamber into two hydraulic pressure chambers.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: July 16, 2002
    Assignee: INA Walzlager Schaeffler oHG
    Inventors: Jochen Auchter, Andreas Strauss
  • Patent number: 6418897
    Abstract: The invention concerns a device for the angular adjustment of a camshaft relative to the crankshaft of an internal combustion engine, particularly a vane-type adjuster (1) comprising a stator (12) that is driven by the crankshaft preferably through a traction element and a drive pinion (11), and a vane rotor (18) that can be pressurized by pressure oil and is rotationally fixed to the camshaft while possessing a means, preferably an axially displaceable fixing pin (37) for effecting a releasable, rotational fixing of the vane rotor. The drawback of oil leakage in common vane-type adjusters is avoided by the fact that all components of the vane-type adjuster (1) that have contact with pressure oil are arranged in an oil-tight housing (2).
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: July 16, 2002
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Peter Urban, Andreas Strauss, Dieter Goppelt
  • Patent number: 6382154
    Abstract: A device for changing the timing of valves in an internal combustion engine which includes a crankshaft-coupled component and a camshaft-coupled component is provided. The camshaft-coupled component is hydraulically rotatable and lockable with respect to the crankshaft-coupled component for relative rotation or hydraulic clamping of the camshaft (5) with respect to the crankshaft. Movement of hydraulic fluid to and from the device proceeds via a hydraulic-fluid adapter on the device's axial side facing away from the camshaft, against which adapter is additionally positioned an impulse-sending wheel for determining the camshaft position.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: May 7, 2002
    Assignee: INA Walzlager Schaeffler oHG
    Inventors: Joachim Dietz, Andreas Strauss