Patents by Inventor Franz Rieger

Franz Rieger 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: 20080141429
    Abstract: The invention relates to a helmet, in particular a protective helmet for emergency services or intervention forces. Said helmet comprises a dome (1), which is provided with internal padding and lateral convex sections (1a) in the ear regions for accommodating ear defender capsules (5). The dome (1) and the lateral convex sections (1a) in the ear regions consist preferably of a single deep-drawn titanium sheet.
    Type: Application
    Filed: July 19, 2007
    Publication date: June 19, 2008
    Inventors: Georg Scharpenack, Walter Obermair, Franz Rieger
  • Patent number: 7021568
    Abstract: A fuel injector (1), in particular a fuel injector (1) for fuel injection systems, includes a first solenoid (2) cooperating with an armature (3), a second solenoid (4) cooperating with the armature (3), and a valve needle (13) friction-locked to the armature (3) for actuating a valve closing body, a force being exertable on the armature (3) in a closing direction using the first solenoid (2) and in an opening direction using the second solenoid (4).
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: April 4, 2006
    Assignee: Robert Bosch GmbH
    Inventors: Franz Rieger, Harald Maisch, Michael Huebel, Ulrich Becker, Juergen Stein
  • Patent number: 6892971
    Abstract: A fuel injector, in particular a fuel injector for fuel-injection systems of internal combustion engines, includes a first magnetic coil cooperating with a first armature, a second magnetic coil cooperating with a second armature, and a valve needle which is in force-locking connection with the first armature via a first flange and to the second armature via a second flange, to actuate a valve-closure member. A restoring spring acts upon the valve needle in a closing direction of the fuel injector. A first positioning spring, situated between the first flange and the first armature, acts upon the first armature in the closing direction of the fuel injector, while a second positioning spring, situated between the second flange and the second armature, acts upon the second armature in an opening direction of the fuel injector.
    Type: Grant
    Filed: May 16, 2002
    Date of Patent: May 17, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Franz Rieger, Fevzi Yildirim, Andreas Eichendorf, Günther Hohl, Michael Hübel, Jürgen Stein
  • Patent number: 6814309
    Abstract: A fuel injector is described, in particular an injector for fuel injection systems in internal combustion engines, that includes a valve needle having a valve-closure member which cooperates with a valve-seat surface arranged in valve-seat member to form a sealing seat and which has several injection orifices which are arranged downstream from the sealing seat, and are sealed by sealing seat against a fuel supply. A disk element is arranged downstream from the sealing seat, the disk element having at least one valve section, which changes its shape when the temperature changes. Valve section is connected to a heating element and optionally covers an injection orifice.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: November 9, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Franz Rieger, Thomas Ludwig, Hans Schlembach, Gottlob Haag, Ulrich Brenner, Michael Huebel, Juergen Stein, Udo Sieber
  • Patent number: 6766968
    Abstract: A fuel injector for fuel injection systems in internal combustion engines, including an actuator, a valve needle operable by the actuator for operating a valve-closure member, which, together with a valve-seat surface forms a sealing seat and a swirl device including at least one swirl channel, through which fuel flows with a tangential component relative to a longitudinal axis of the fuel injector. The axial position of a plunger element determines a cross-section of at least one bypass channel that bypasses the at least one swirl channel without a tangential component.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: July 27, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Franz Rieger, Thomas Ludwig, Hans Schlembach, Gottlob Haag, Ulrich Brenner, Michael Huebel, Juergen Stein, Udo Sieber
  • Patent number: 6748918
    Abstract: A fuel injector having an integrated spark plug for injecting fuel directly into a combustion chamber of an internal combustion engine and for igniting the fuel that is injected into the combustion chamber has a valve body, which, together with a valve-closure member, forms a sealing seat. Disposed contiguously to the sealing seat is a discharge orifice, which discharges at a valve-body end face facing the combustion chamber. Provision is also made for a housing body that is insulated from the valve body, and for an ignition electrode that is connected to the housing body. In this context, a spark arc-over is produced between the valve body and the ignition electrode. The ignition electrode and the valve body are formed so that the spark arc-over occurs between the end face of the valve body facing the combustion chamber and the ignition electrode.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: June 15, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Franz Rieger, Gernot Wuerfel, Stefan Kampmann
  • Publication number: 20040074998
    Abstract: A fuel injector (1), in particular for fuel injection systems in internal combustion engines, including an actuator (27), a valve needle (3) operable by the actuator (27) for operating a valve-closure member (4), which, together with a valve-seat surface (6) forms a sealing seat and a swirl device (34) having at least one swirl channel (35), through which fuel flows with a tangential component relative to a longitudinal axis (38) of the fuel injector (1). The axial position of a plunger element (36) determines a cross-section of at least one bypass channel (37) that bypasses the at least one swirl channel (35) without a tangential component.
    Type: Application
    Filed: November 21, 2002
    Publication date: April 22, 2004
    Inventors: Franz Rieger, Thomas Ludwig, Hans Schlembach, Gottlob Haag, Ulrich Brenner, Michael Huebel, Juergen Stein, Udo Sieber
  • Publication number: 20040050977
    Abstract: A fuel injector (1), in particular a fuel injector (1) for fuel-injection systems of internal combustion engines, comprises a first magnetic coil (2) cooperating with a first armature (3), a second magnetic coil (4) cooperating with a second armature (5), and a valve needle (14) which is in force-locking connection with the first armature (3) via a first flange (12) and to the second armature (5) via a second flange (13), to actuate a valve-closure member. A restoring spring (17) acts upon the valve needle (14) in a closing direction of the fuel injector (1). A first positioning spring (15), situated between the first flange (12) and the first armature (3), acts upon the first armature (3) in the closing direction of the fuel injector (1), while a second positioning spring (16), situated between the second flange (13) and the second armature (5), acts upon the second armature (5) in an opening direction of the fuel injector (1).
    Type: Application
    Filed: September 4, 2003
    Publication date: March 18, 2004
    Inventors: Franz Rieger, Fevzi Yildirim, Andreas Eichendorf, Gunther Hohl, Michael Hubel, Jurgen Stein
  • Publication number: 20030127543
    Abstract: A fuel injector, in particular an injector for fuel injection systems in internal combustion engines, includes a valve needle (6) having a valve-closure member (7) which cooperates with a valve-seat surface (8) situated in valve-seat member (5) to form a sealing seat (9) and which has several injection orifices (4, 12) which are situated downstream from the sealing seat (9), and are sealed by sealing seat (9) against a fuel supply. A disk element (10) is arranged downstream from the sealing seat (9), the disk element (10) having at least one valve section (11), which changes its shape when the temperature changes. Valve section (11) is connected to a heating element (13) and is possibly covering an injection orifice (12).
    Type: Application
    Filed: November 12, 2002
    Publication date: July 10, 2003
    Inventors: Franz Rieger, Thomas Ludwig, Hans Schlembach, Gottlob Haag, Ulrich Brenner, Michael Huebel, Juergen Stein, Udo Sieber
  • Publication number: 20030111042
    Abstract: A fuel injector having an integrated spark plug (1) for injecting fuel directly into a combustion chamber (72) of an internal combustion engine and for igniting the fuel that is injected into the combustion chamber (72) has a valve body (7), which, together with a valve-closure member (10), forms a sealing seat. Disposed contiguously to the sealing seat is a discharge orifice (12), which discharges at a valve-body (7) end face (73) facing the combustion chamber (72). Provision is also made for a housing body (2) that is insulated from the valve body (7), and for an ignition electrode (70a) that is connected to the housing body (2). In this context, a spark arc-over is produced between the valve body (7) and the ignition electrode (70a). The ignition electrode (70a) and the valve body (7) are formed in such a way that the spark arc-over takes place between the end face (73) of the valve body (7) facing the combustion chamber (72) and the ignition electrode (70a).
    Type: Application
    Filed: January 29, 2003
    Publication date: June 19, 2003
    Inventors: Franz Rieger, Gernot Wuerfel, Stefan Kampmann
  • Publication number: 20030111557
    Abstract: A fuel injection valve, in particular for direct injection of fuel into a combustion chamber of an internal combustion engine, includes an actuator that is in working engagement with a valve needle, the valve needle including at its spray-discharge end a valve closure element that coacts with a valve seating surface configured on a valve seat element to form a sealing seat. Also provided is a swirl disk in which swirl channels are configured. The swirl disk includes extensions that coact with a cam disk in such a manner that a tangential component of the swirl generated by the swirl disk is modifiable.
    Type: Application
    Filed: October 28, 2002
    Publication date: June 19, 2003
    Inventors: Franz Rieger, Thomas Ludwig, Hans Schlembach, Gottlob Haag, Ulrich Brenner, Michael Huebel, Juergen Stein, Udo Sieber
  • Publication number: 20030080202
    Abstract: In a fuel-injection system, a fuel injector (1) has a valve-closure member (4), which cooperates with a valve seat surface (6) on a valve seat element (5) to form a sealing seat. At least one spray-discharge opening (7. 49) is situated downstream of the sealing seat and it is sealed from a fuel inlet (16) by the sealing seat. The spray-discharge opening (7, 49) has a spray-shaping section (34) which is made of a thin-walled wall section of the spray-discharge opening (7, 49) lying opposite to a pressure chamber (44), and the pressure chamber (44) may have pressure applied to it by a pressure fluid.
    Type: Application
    Filed: October 11, 2002
    Publication date: May 1, 2003
    Inventors: Franz Rieger, Thomas Ludwig, Hans Schlembach, Gottlob Haag, Ulrich Brenner, Michael Huebel, Juergen Stein, Udo Sieber
  • Patent number: 6536405
    Abstract: A fuel injector having an integrated spark plug (1) for injecting fuel directly into a combustion chamber (72) of an internal combustion engine and for igniting the fuel that is injected into the combustion chamber (72) has a valve body (7), which, together with a valve-closure member (10), forms a sealing seat. Disposed contiguously to the sealing seat is a discharge orifice (12), which discharges at a valve-body (7) end face (73) facing the combustion chamber (72). Provision is also made for a housing body (2) that is insulated from the valve body (7), and for an ignition electrode (70a) that is connected to the housing body (2). In this context, a spark arc-over is produced between the valve body (7) and the ignition electrode (70a). The ignition electrode (70a) and the valve body (7) are formed in such a way that the spark arc-over takes place between the end face (73) of the valve body (7) facing the combustion chamber (72) and the ignition electrode (70a).
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: March 25, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Franz Rieger, Gernot Wuerfel, Stefan Kampmann
  • Publication number: 20020170986
    Abstract: A fuel injector (1), in particular a fuel injector (1) for fuel injection systems, includes a first solenoid (2) cooperating with an armature (3), a second solenoid (4) cooperating with the armature (3), and a valve needle (13) friction-locked to the armature (3) for actuating a valve closing body, a force being exertable on the armature (3) in a closing direction using the first solenoid (2) and in an opening direction using the second solenoid (4).
    Type: Application
    Filed: May 9, 2002
    Publication date: November 21, 2002
    Inventors: Franz Rieger, Harald Maisch, Michael Huebel, Ulrich Becker, Juergen Stein
  • Patent number: 6340015
    Abstract: A fuel injection valve (1) having an integrated sparkplug for direct injection of fuel into the combustion chamber of an internal combustion engine and for igniting the fuel injected into the combustion chamber has a valve body (7) which, together with a valve closing body (10) operated by a valve needle (9), forms a seal seat. The valve body (7) and to some extent the valve needle (9) are surrounded radially by an insulating body (6). The insulating body (6) is in turn surrounded radially at least in part by a housing body (2). Ignition electrodes (15, 16) are provided on the valve body (7) and the housing body (2). The valve needle (9) has a first metal guide section (9a) guided in a swirl insert (14), a second metal guide section (9b) guided in the insulating body (6) and an insulating section (9c) arranged between the guide sections (9a, 9b). The guide sections (9a, 9b) are connected in a positive manner to the insulating section (9c).
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: January 22, 2002
    Assignee: Robert Bosch GmbH
    Inventors: Walter Benedikt, Franz Rieger, Rainer Norgauer
  • Patent number: 5983855
    Abstract: A fuel injection valve includes a valve needle passing through the valve opening to the valve closing body arranged on the spray outlet end. A closing spring prestresses the valve needle in a direction opposite its opening direction aimed in the direction of spraying, so that the valve closing body is in contact with the valve seat on the spray outlet end when the fuel injection valve is closed. The armature is kept engaged and in contact with the valve needle by means of a bearing spring which acts in the direction of opening by means of a connecting piece arranged between the armature and the valve needle. The connecting piece includes a suitable insulation element for providing insulation against high voltage.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: November 16, 1999
    Assignee: Robert Bosch GmbH
    Inventors: Walter Benedikt, Franz Rieger, Rainer Norgauer, Christian Preussner
  • Patent number: 5534296
    Abstract: A bath for pre-treatment of light metals that form oxide layers, before electroless (chemical) metal deposition is an aqueous bath containing phosphorous acid. The bath is used in the following process for electroless deposition of nickel: (1) Degreasing by boiling (2) Rinsing (3) Pickling (4) Rinsing (5) Treatment in aqueous bath containing phosphoric acid (6) Rinsing with water (7) Chemically nickel plating (8) Rinsing. The light metal articles are packed in a drum that is immersed and rotated in the pre-treatment bath. Current and voltage are applied to a light metal bar that is attached to a non-rotating place on the drum.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: July 9, 1996
    Inventor: Franz Rieger
  • Patent number: 5380451
    Abstract: A bath for pre-treatment of light metals that form oxide layers, before electroless (chemical) metal deposition is an aqueous bath containing phosphorous acid. The bath is used in the following process for electroless deposition of nickel: (1) Degreasing by boiling (2) Rinsing (3) Pickling (4) Rinsing (5) Treatment in aqueous bath containing phosphoric acid (6) Rinsing with water (7) Chemically nickel plating (8) Rinsing. The light metal articles are packed in a drum that is immersed and rotated in the pre-treatment bath. Current and voltage are applied to a light metal bar that is attached to a non-rotating place on the drum.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: January 10, 1995
    Inventor: Franz Rieger
  • Patent number: 4967708
    Abstract: In lean operation of internal combustion engines having externally supplied ignition, improvement in terms of fuel consumption and emissions are obtained if the fuel is injected directly into the combustion chamber. Because the gas exchange guide cross sections are large, the space available for installing the injection valve and spark plug is very limited, and disruptions in the course of combustion occur when the injection valve and ignition device are too far apart. By developing a fuel injection valve that has wire electrodes on the injection end to serve as an ignition device, the spark gap arcing over in the vicinity of the fuel introduced by the injection valve, optimal ignition conditions are attained even for poorly ignited fuels or when the proportion of fuel in the combustion chamber charge is extremely low (stratified charge operation).
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: November 6, 1990
    Assignee: Robert Bosch GmbH
    Inventors: Ernst Linder, Franz Rieger, Gernot Wuerfel
  • Patent number: 4786324
    Abstract: In some cases, it is necessary to coat aluminum with nickel, and the most difficult operating conditions are probably met here in the case of aluminum pistons in internal combustion engines. With known processes, adhesion problems occur in the further coating with other metals. Without intermediate activation, satisfactory solutions are not obtained.However, the problem is solved by high proportions of nickel sulfate, small proportions of an acid which stabilizes the pH values, and very small proportions of a fluoride which loosens the oxide layer appearing in the licer bath, of a chloride which promotes the dissolution of the nickel anodes and of a phosphite which improves the adhesive strength of the nickel layer.The solids are kept in suspension in the bath by vigorous circulation, for example by means of air. The particle size should preferably be 3 micrometers.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: November 22, 1988
    Inventor: Franz Rieger