Patents by Inventor Karl Pfahler

Karl Pfahler 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: 20080290703
    Abstract: The invention relates to a motor vehicle seat comprising a back rest (11), a height-adjustable head rest (12), and an aeration device (13) that is integrated into the back rest and comprises a blow opening (16) arranged in the upper side (111) of the back rest (11) and used to blow out hot air. The aim of the invention is to improve the aeration device by reducing the aeration noises and generating a comfortable warm feeling for the user of the seat, in the head, neck and shoulder region. To this end, a diffuser (19) is arranged in the intermediate space between the back rest (11) and the head padding (15) of the head rest (12), said diffuser being embodied and oriented in relation to the blow opening in such a way that the hot air flow through the blow opening towards the head padding is deflected into a wide, diffuse hot air flow flowing around the head, neck and shoulder area of a user (10).
    Type: Application
    Filed: November 30, 2004
    Publication date: November 27, 2008
    Applicant: DAIMLERCHRYSLER AG
    Inventors: Claudio Bargheer, Thomas Heckmann, Karl Pfahler
  • Publication number: 20080246325
    Abstract: A vehicle seat (and a cushion for a vehicle seat) comprise an assembly of layers with at least one air-guiding layer. An outlet opening is provided in the region of the air-guiding layer and is arranged in such a manner that the discharging of warm and moist air causes dry and cool ambient air to automatically flow into the air-guiding layer.
    Type: Application
    Filed: January 21, 2006
    Publication date: October 9, 2008
    Applicant: DaimlerChrysler AG
    Inventors: Karl Pfahler, Manfred Ziemann
  • Publication number: 20080203781
    Abstract: A motor vehicle seat has a headrest which is supported by a backrest. At a front side of the headrest, which faces toward the seat occupant, the air nozzle opens out of an air supply device for supplying the head, shoulder, and neck region of the seat occupant with an air flow. The air nozzle is provided with guide elements for directing the emerging airflow. Each component of the air nozzle is arranged so as to be recessed with respect to the front side of the headrest by a comfort dimension.
    Type: Application
    Filed: December 8, 2005
    Publication date: August 28, 2008
    Applicant: Daimlerchrylser AG
    Inventors: Claudio Bargheer, Karl Pfahler, Lothar Renner
  • Publication number: 20080191520
    Abstract: An air supply mechanism for a vehicle seat has an air discharging opening which is provided in the upper region of the vehicle seat and via which the head, shoulder, and neck region of a seat occupant can be subjected to an airflow in order to reduce undesirable draft phenomena. The airflow can be regulated with a control device, by regulating a blower speed of a fan, and can be heated via a heating element. The heating element has three heating stages which can be selected by a manually setting a regulating device by the seat occupant in order to select a heating stage and/or by the control device in response to an external parameter value. It is possible for the control device to regulate the blower speed of the fan in response to a further external parameter value. This construction makes it possible for the sensation of heat experienced by the seat occupant to be taken into account in the elimination of a sensation of a draft.
    Type: Application
    Filed: June 17, 2005
    Publication date: August 14, 2008
    Applicant: DAIMLER AG
    Inventors: Dietmar Hartmann, Karl Pfahler, Lothar Renner
  • Publication number: 20080136221
    Abstract: The present invention discloses an air supply mechanism for a vehicle seat (12), and a method for the operation thereof. The air supply mechanism comprises a control device (24), for driving a fan (38) and a heating element (39) connected downstream of the fan (38). When the air supply mechanism is switched on, the control device (24) switches on a heating element (39) and at the same time carries out a starting control of a fan (38) in such a manner that the fan (38) starts and is operated at minimum blower speed for a predetermined period of time before the blower speed is raised to a predetermined working point and subsequently the blower speed is regulated as a function of the driving speed. In this manner, a seat occupant does not experience an initial sensation of draft due to a powerful discharge of relatively cold air but rather experiences a pleasant warmth even directly after the mechanism is switched on.
    Type: Application
    Filed: June 18, 2005
    Publication date: June 12, 2008
    Applicant: DAIMLERCHRYSLELR AG
    Inventors: Dietmar Hartmann, Karl Pfahler, Lothar Renner
  • Publication number: 20080122275
    Abstract: A backrest for a vehicle seat has a rear wall and an integrated device for supplying hot air to the shoulder, neck and head region of a seated person. The device has at least one air duct leading to an air discharge opening, a fan housing, which accommodates a fan and is connected on the delivery side to the air duct and has an air intake opening connected to an air inlet opening in the rear wall, and a heating element, which is arranged in the air flow of the fan. In order for the hot air supply device to take up less empty space in the backrest and for it to be able to be fitted simply and rapidly, the air duct and the fan housing are combined to form a single-piece module arranged on the inner surface of the rear wall.
    Type: Application
    Filed: May 4, 2005
    Publication date: May 29, 2008
    Applicant: Daimlerchrysler AG
    Inventors: Gerhard Flory, Karl Pfahler, Lothar Renner
  • Publication number: 20080036249
    Abstract: A vehicle seat has a backrest with a vertically adjustable headrest, and a device for warming the nape and head area of a seat occupant with warm air. The device comprises an electric heating unit and an air vent which is arranged in an intermediate space between the backrest and head cushion of the headrest. In order to obtain a warm air heating device which i) is of low overall volume, ii) can be integrated satisfactorily into the seat, iii) is efficient and iv) does not disrupt the esthetics of the vehicle seat and/or of the passenger cell, the electric heating unit, and preferably also a blower, are integrated in the air vent.
    Type: Application
    Filed: January 12, 2005
    Publication date: February 14, 2008
    Applicant: Daimler Chrysler AG
    Inventors: Thomas Heckmann, Karl Pfahler
  • Publication number: 20070278835
    Abstract: A vehicle seat with a back rest, a height-adjustable head restraint with a head cushion, and a heating device for heating the neck and head region of a seat occupant with hot air. The heating device has an air-guiding duct that is arranged in the head cushion and has a hot air outlet opening and on the lower side of the head cushion. The intermediate space between the lower side of the head cushion and the upper side of the back rest is shielded to the rear by a covering.
    Type: Application
    Filed: January 12, 2005
    Publication date: December 6, 2007
    Applicant: DAIMLERCHRYSTER AG
    Inventors: Claudio Bargheer, Thomas Heckmann, Karl Pfahler
  • Publication number: 20070145808
    Abstract: A vehicle seat for a motor vehicle has a cushion core and ventilation ducts which run along and inside a seat surface and/or backrest surface, and each have a constant cross section ventilation channels are essentially arranged transversely to the ventilation ducts, have a constant cross section, penetrate the entire thickness of the cushion core and extend from the ventilation ducts as far as a rear wall facing away from the seat surface and/or backrest surface. A predetermined arrangement of the ventilation ducts and/or ventilation channels defines regions in the cushion core which are ventilated to different extents and are adapted to a ventilation requirement of a standard vehicle occupant.
    Type: Application
    Filed: October 23, 2004
    Publication date: June 28, 2007
    Applicant: DAIMLERCHRYSLER AG
    Inventors: Karl-Heinz Minuth, Karl Pfahler
  • Publication number: 20070120401
    Abstract: A series of components is provided for a vehicle seat of a motor vehicle. Each vehicle seat has a cushion core with ventilation ducts running along and inside a seat surface and/or backrest surface. Ventilation channels are arranged essentially transversely to the ventilation ducts, penetrate the entire thickness of the cushion core and extend from the ventilation ducts as far as a rear wall facing away from the seat surface and/or backrest surface. For a passively ventilated vehicle seat, the ventilation channels are connected in a flow-permeable manner to the surroundings via an opening in the ear wall, whereas, in an actively ventilated vehicle seat, at least one fan is provided and at least one ventilation channel is closed.
    Type: Application
    Filed: October 23, 2004
    Publication date: May 31, 2007
    Applicant: DAIMLERCHRYSLER AG
    Inventors: Karl-Heinz Minuth, Karl Pfahler
  • Publication number: 20070029862
    Abstract: A motor vehicle seat having an air supply device by means of which an air flow can be established through a ventilation layer of the cushion of the seat in order to ventilate the seat and/or in order to heat the seat. An air outflow opening of the air supply device is arranged in the upper region of the seat and via which the head, shoulder and neck region of the seat occupant can be acted upon by an air flow. The air supply device is assigned a fan. In order to provide a motor vehicle seat with an air supply device which can be used more universally, the fan can be supplied with air from the ventilation layer of the cushion of the seat in order to generate the air flow for the heat, shoulder and neck region of the seat occupant.
    Type: Application
    Filed: March 16, 2004
    Publication date: February 8, 2007
    Applicant: DaimlerChrysler AG
    Inventors: Claudio Bargheer, Vasilios Orizaris, Karl Pfahler, Lothar Renner
  • Publication number: 20060267383
    Abstract: An air supply device for an automotive seat includes an air duct which is arranged at the delivery side of a fan and has at least one air outlet opening provided in the upper region of the seat for supplying the head, shoulder and neck region of a seat occupant with a flow of air. A heating element is arranged in the air duct between the fan and the air outlet opening, and the air supply device has at least one sensor for detecting a parameter value as a function of which the flow of air emerging from the air outlet opening is controlled. In order to provide the air supply device with a flow of air which can be controlled in a more universal manner, the sensor is arranged inside the air duct between the air outlet opening and the heating element.
    Type: Application
    Filed: February 26, 2004
    Publication date: November 30, 2006
    Inventors: Claudio Bargheer, Dietmar Hartmann, Karl Pfahler, Lothar Renner
  • Publication number: 20060219699
    Abstract: In a method for adjusting the temperature of a motor vehicle seat, which includes a seat ventilating system and a seat heater, to a predetermined desired value, in which the temperature of the seat is detected in the region of a seat surface by a first temperature sensor and the outside temperature is detected by a second temperature sensor, the seat ventilating system is switched off below a first temperature threshold for the outside temperature, and the seat heater is switched off above a second temperature threshold for the outside temperature. By these measures, an occupant may be provided with a comfortable micro-climate in the seat region for his/her well-being.
    Type: Application
    Filed: November 25, 2003
    Publication date: October 5, 2006
    Inventors: Thomas Geisel, Achim Gottmann, Vasilios Orizaris, Karl Pfahler, Lothar Renner, Bernd Schmidt, Dietmar Zwoelfer
  • Publication number: 20060150756
    Abstract: A method for determining seat comfort includes the steps of measuring pressure distribution over a seat surface using a pressure sensing system, measuring an actual deformation of the seat surface using a deformation sensing system, and computing a value of seat comfort on the basis of the measured actual deformation of the seat surface and the measured pressure distribution of the seat surface. Apparatus for determining seat comfort includes a pressure sensing system for measuring a pressure distribution on a seat surface, a deformation sensory system for measuring an actual deformation of the seat surface, and an evaluation unit for computing seat comfort from the measured pressure distribution and the measured deformation of the seat surface.
    Type: Application
    Filed: October 24, 2003
    Publication date: July 13, 2006
    Inventors: Lothar Kassing, Vasilios Orizaris, Karl Pfahler
  • Patent number: 7075034
    Abstract: An air supply device is provided for a vehicle seat of an open-top motor vehicle having at least one air outflow opening which is provided in the upper region of the vehicle seat and via which an airstream can be applied to the head area, shoulder area and nape area of the sitting vehicle occupant in order to reduce undesired draft phenomenon. The airstream can be regulated by way of a control device. In order to provide improved comfort for the sitting vehicle occupant when driving with the top open, the airstream is adjusted, when the air supply device is switched on, by way of the control device as a function of an automatically sensed external parameter value or of a predefined value selectable by the sitting vehicle occupant, to an assigned basic value, starting from which the further adjustment of the airstream is carried out as a function of an automatically sensed further parameter value.
    Type: Grant
    Filed: April 26, 2003
    Date of Patent: July 11, 2006
    Assignee: DaimlerChrysler AG
    Inventors: Claudio Bargheer, Dietmar Hartmann, Karl Pfahler, Lothar Renner
  • Publication number: 20060138811
    Abstract: A cushion has a cushion core, particularly made of a foam material, and an air-permeable and moisture-permeable covering layer that covers the core. To improve the climate comfort by ensuring good removal of moisture from the area between covering layer and cushion core, longitudinal and transverse grooves, spaced apart from one another, are formed in the surface of the cushion core covered by the covering layer. These grooves are open toward the covering layer and intersect one another. In addition, the cushion core is provided with channels which pass through the entire thickness of the core and which, at one end, open out at the points of intersection of the longitudinal and transverse grooves and, at the other end, open freely to the outside of the cushion core.
    Type: Application
    Filed: August 16, 2003
    Publication date: June 29, 2006
    Inventors: Karl Pfahler, Lothar Renner, Gerd Urban, Manfred Ziemann
  • Publication number: 20050238339
    Abstract: Air supply device is provided for a vehicle seat of an open-top motor vehicle having at least one air outflow opening which is provided in the upper region of the vehicle seat and via which an airstream can be applied to the head area, shoulder area and nape area of the sitting vehicle occupant in order to reduce undesired draught phenomenon. The airstream can be regulated by means of a control device. In order to provide improved comfort for the sitting vehicle occupant when driving with the top open, the airstream is adjusted, when the air supply device is switched on, by means of the control device as a function of an automatically sensed external parameter value or of a predefined value selectable by the sitting vehicle occupant, to an assigned basic value, starting from which the further adjustment of the airstream is carried out as a function of an automatically sensed further parameter value.
    Type: Application
    Filed: April 26, 2003
    Publication date: October 27, 2005
    Applicant: DAIMLER CHRYSLER AG
    Inventors: Claudio Bargheer, Dietmar Hartmann, Karl Pfahler, Lothar Renner
  • Publication number: 20050091817
    Abstract: A method for determining an evaluation number which is representative of the quality of the dynamic sitting comfort of upholstered seat elements of a vehicle seat. A flexible measuring mat is applied to the upholstered seat element in a defined position and a matrix, which covers the surface, of force measuring sensors which operate without hysteresis is integrated into said measuring mat. A test person or a test body which behaves anthropomorphically in terms of oscillation is positioned on the vehicle seat. In order to carry out a measurement, this body/seat system is excited so as to oscillate, for example by traveling over a bad stretch of road. The signals supplied by the force measuring sensors are added with the same phase to form a composite signal. The frequency response of the body/seat system is determined from this composite signal.
    Type: Application
    Filed: August 21, 2002
    Publication date: May 5, 2005
    Inventors: Michael Eger, Lothar Kassing, Karl Pfahler, Lothar Renner
  • Patent number: 6817675
    Abstract: A motor vehicle seat includes padding which is assigned to a backrest or a seat cushion and includes a lower padding part, a ventilation layer which rests on the lower padding part and through which air may flow, and an air-permeable, upper padding layer arranged above the latter, the padding covered by upholstery and provided with stitching along which the upholstery is connected to the upper padding layer via fastening device(s), and the ventilation layer extending into side parts of the padding and having a virtually unchanged thickness in the region of the stitching. The upholstery and the upper padding layer are fastened to the lower padding part along the stitching via the fastening device(s) bridging the ventilation layer.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: November 16, 2004
    Assignee: DaimlerChrysler AG
    Inventors: Henning Buss, Karl-Heinz Minuth, Karl Pfahler, Lothar Renner
  • Patent number: 6808230
    Abstract: A seat module is designed as a seat cushion or backrest and can be actively ventilated. The seat module includes a cushion, which has a cushion pad impermeable to air and an upholstered zone that extends over the latter and through which air can be made to flow and which is covered by an air-permeable cushion cover. A cushion carrier accommodates the cushion. To improve the quality of the module as regards sitting comfort and long-term stability combined with low manufacturing costs, the upholstered zone through which air can be made to flow is composed of three layers and in the manner of a sandwich of two rubberized hair layers and a knitted layer of coarse-mesh knitted spacing fabric in between the hair layers.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: October 26, 2004
    Assignee: DaimlerChrysler AG
    Inventors: Henning Buss, Joachim Kunkel, Karl Pfahler