Patents by Inventor Klaus Hirschfeld

Klaus Hirschfeld 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).

  • Patent number: 6756550
    Abstract: A switch assembly includes a rotary-push switch group placed on a switch lever. The switch group includes rotary and push switches each having movable contacts supported on corresponding fixed contacts. The rotary switch includes a rotary actuating element actuable to rotate about a longitudinal axis of the switch lever to actuate its movable contacts. The push switch includes an actuating element actuable to move axially along the longitudinal axis in response to axially directed pushing movement to actuate its movable contacts. The fixed contacts associated with the movable contacts of the rotary switch lie in a plane transverse to the longitudinal axis. A slider is engaged to the rotary actuating element to rotate therewith to guide the movable contacts of the rotary switch concentrically about the longitudinal axis. The slider is push-decoupled to the rotary actuating element such that pushing movement is absent from being felt by the slider.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: June 29, 2004
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventors: Wojciech Ficek, Klaus Hirschfeld
  • Publication number: 20040074746
    Abstract: A switch assembly includes a rotary-push switch group placed on a switch lever. The switch group includes rotary and push switches each having movable contacts supported on corresponding fixed contacts. The rotary switch includes a rotary actuating element actuable to rotate about a longitudinal axis of the switch lever to actuate its movable contacts. The push switch includes an actuating element actuable to move axially along the longitudinal axis in response to axially directed pushing movement to actuate its movable contacts. The fixed contacts associated with the movable contacts of the rotary switch lie in a plane transverse to the longitudinal axis. A slider is engaged to the rotary actuating element to rotate therewith to guide the movable contacts of the rotary switch concentrically about the longitudinal axis. The slider is push-decoupled to the rotary actuating element such that pushing movement is absent from being felt by the slider.
    Type: Application
    Filed: September 3, 2003
    Publication date: April 22, 2004
    Applicant: Leopold Kostal GmbH & Co. KG
    Inventors: Wojciech Ficek, Klaus Hirschfeld
  • Publication number: 20040055408
    Abstract: A device for fastening a casing tube switch module to a casing tube of a steering wheel shaft when a steering wheel is mounted on the steering shaft. The device including a clamping element and a bearing. The clamping element is arranged coaxially between the casing tube and the switch module. The clamping element exerts a clamping force in a direction extending radially out from the steering shaft. The bearing rotationally decouples the steering wheel from the switch module. The bearing has a stator operable for transferring an axial motion of the steering wheel as the steering wheel is mounted on the steering shaft to the switch module such that the switch module moves axially with respect to the casing tube toward the clamping element and tensions the clamping element to apply the clamping force to fasten the switch module to the casing tube.
    Type: Application
    Filed: December 23, 2002
    Publication date: March 25, 2004
    Applicant: Leopold Kostal GmbH & Co.
    Inventors: Klaus Hirschfeld, Holger Lettmann, Christoph Oster, Dietmar Kritzler
  • Patent number: 6700219
    Abstract: A steering column module for a motor vehicle includes functional units such as steering angle sensors and torque sensors adjacently arranged on a steering column. The functional units deliver respective output signals and requiring respective control signals. An electronics unit is connected with an onboard power supply of a motor vehicle for receiving power. The electronics unit is operable for processing the output signals of the functional units and operable for generating control signals for the functional units. A first one of the functional units is connected to the electronics unit via electrical plug-in connector parts with correspondingly arranged counter electrical plug-in connector parts situated on the electronics unit. A second one of the functional units is combined with the electronics unit to form an inseparable assembly.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: March 2, 2004
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventors: Klaus Hirschfeld, Holger Lettmann, Markus Adam
  • Publication number: 20030045133
    Abstract: A steering column module for a motor vehicle includes functional units such as steering angle sensors and torque sensors adjacently arranged on a steering column. The functional units deliver respective output signals and requiring respective control signals. An electronics unit is connected with an onboard power supply of a motor vehicle for receiving power. The electronics unit is operable for processing the output signals of the functional units and operable for generating control signals for the functional units. A first one of the functional units is connected to the electronics unit via electrical plug-in connector parts with correspondingly arranged counter electrical plug-in connector parts situated on the electronics unit. A second one of the functional units is combined with the electronics unit to form an inseparable assembly.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 6, 2003
    Applicant: Leopold Kostal GmbH & Co. KG
    Inventors: Klaus Hirschfeld, Holger Lettmann, Markus Adam
  • Patent number: 6046414
    Abstract: A switch assembly includes a housing having a longitudinal axis and a transverse axis. The housing has a pair of spaced apart longitudinally extending walls each having a control curve. An actuating element is mounted to the housing. The actuating element is longitudinally movable along the longitudinal axis between two switching positions and is pivotable about the transverse axis between two other switching positions. A first switching piece is coupled to the actuating element to pivot as the actuating element pivots. A first pair of movable electrical switching contacts is associated with the first switching piece. The first switching piece moves one of the first pair of switching contacts as the actuating element pivots. A second switching piece is coupled to the actuating element to pivot as the actuating element longitudinally moves. A second pair of movable electrical contacts is associated with the second switching piece.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: April 4, 2000
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventor: Klaus Hirschfeld
  • Patent number: 5959268
    Abstract: An electrical switch is proposed which in addition to its mechanical functional parts and the electrical contact parts influenced by said mechanical functional parts consists of a housing and a first actuating element which is rotatably mounted therein and which can be moved into several switching positions and a second actuating element which is likewise rotatably mounted on the housing and can be moved into several switch settings.
    Type: Grant
    Filed: March 10, 1998
    Date of Patent: September 28, 1999
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventor: Klaus Hirschfeld
  • Patent number: 5128500
    Abstract: A switch assembly for controlling the positioning of motor vehicle seat segments is suggested. THe switch assembly includes switching mechanisms in the form of pre-assembled switch modules which are capable of functioning independently. This creates a switch assembly where the number of different working parts is kept to a minimum. The working parts can be used for movement of the horizontal seat cushion, seat back, and headrest, equally well for both the left and the right vehicle seats. The switch modules are mounted on a printed circuit board which is fitted into a housing. Each printed circuit board is so designed that the switch modules can be inserted from either side. The switch modules each have at least two switch contact systems and are provided with symmetrical connecting means which allow mirror-image arrangement of the switch modules on one or the other side of the printed circuit board.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: July 7, 1992
    Assignee: Leopold Kostal GmbH & Co. KG
    Inventor: Klaus Hirschfeld
  • Patent number: 5012056
    Abstract: A control device for an electrical switch is suggested, which is composed, among other things, of an actuation element (1) as well as at least one latching pin (3) that is under the effect of a compression spring (2) and a system having at least one latching track (4) interacting with the latching pin (3). In the latching track (4), at least one molded pathway (7) lying inclined to the actuation directions is present, which upon a displacement of the latching pin (3) in one of the actuation directions necessarily produces a simultaneous displacement of the latching pin (3) in the other actuation direction. The control device designed in such a way serves the purpose of realizing the functions of both angular and axial displacement and in addition, of insuring that the electrical switch can only be brought into permissible switching positions by movement of the actuation element (1).
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: April 30, 1991
    Assignee: Firma Leopold Kostal GmbH & Co. KG
    Inventors: Thomas Abel, Klaus Hirschfeld