Patents Assigned to Rolf Prettl
  • Patent number: 10170239
    Abstract: One aspect is for a method of manufacturing a magnetic coil for a magnetic actuator. A coil carrier is provided which comprises a tubular section and a collar which adjoins the tubular section, wherein the coil carrier is arranged for accommodating a coil winding. A die comprising a defined inner contour is provided which is adapted to the coil carrier. The coil carrier is inserted into the die, wherein the collar of the coil carrier rests on a seating surface of the die. The collar is punched with a punch, wherein a flange contour is formed at the collar the outline of which is defined by an inner contour of the die. The coil carrier is also at least sectionally potted or overmolded with a filler material, wherein the flange contour provides a barrier for the filler material. The disclosure further relates to a corresponding magnetic coil.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: January 1, 2019
    Assignee: ROLF PRETTL
    Inventor: Rolf Prettl
  • Publication number: 20120121449
    Abstract: Check valve with a valve housing, on which is formed a valve seat. The valve seat is designed as an oblique face with respect to a flow direction. A shut-off element has at least one sheet-like shut-off tab which is composed of an elastically deformable material and which, in a shut-off position, bears against the valve seat and, in an opening position, is lifted off from the valve seat, in order to allow the passage of fluid. An abutment element is arranged on that side of the shut-off tab which faces away from the valve seat. The shut-off tab can abut against the abutment element in order to limit the amount by which the shut-off tab is lifted off from the valve seat.
    Type: Application
    Filed: October 18, 2011
    Publication date: May 17, 2012
    Applicant: ROLF PRETTL
    Inventors: Peter Borst, Philip Schreier
  • Publication number: 20110198528
    Abstract: A directional control fluid valve for establishing a first throughflow path, with which fluid is sucked in and supplied under pressure to a consumer, and a second throughflow path with which fluid is sucked out of the consumer. The valve has a housing which has a tank port, a pressure port for connecting to a pressure side of a pump, a suction port for connecting to a suction side of the pump, and a consumer port. The valve has at least one valve flap which is arranged within the housing and which can be moved between a first flap position for establishing the first throughflow path and a second flap position for establishing the second throughflow path. The housing has two parts on which are formed in each case at least two valve seats. The housing has a base part on which the tank port, the pressure port, the suction port and the consumer port are formed, and a cover part which has closed ducts. The closed ducts are connected to the associated valve seats.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 18, 2011
    Applicant: ROLF PRETTL
    Inventors: Juergen Dettinger, Peter Borst
  • Publication number: 20080141505
    Abstract: A seat belt buckle for seat belts has a housing, an opening for inserting a seat belt tongue, a locking device for locking the seat belt tongue, and a release device for releasing the seat belt tongue from the lock. A sensor device electrically senses whether the seat belt tongue is locked, wherein the sensor device has a switch arrangement which can be activated by the seat belt tongue. The switch arrangement has an electrically conductive snap-action plate that can be moved between a first switched position and a second switched position. A mechanical activation device transmits a force exerted on the seat belt tongue during the insertion of the seat belt tongue onto the snap-action plate in order to move the snap-action plate from the first switched position into the second switched position. As a result, an electrical contact element is closed or opened.
    Type: Application
    Filed: February 21, 2008
    Publication date: June 19, 2008
    Applicant: ROLF PRETTL
    Inventor: Peter BORST
  • Patent number: 7301329
    Abstract: A sensor holder for mounting a sensor component is disclosed. In one aspect, the sensor holder comprises an elongate holding device, at the first axial end of which the sensor component is mounted and at the second axial end of which a junction cable can be led up, the conductors of which can be connected to terminals of the sensor component. In this case, the holding device has a plastic carrier, on which the sensor component is mounted, and the metallic outer carrier, in particular a metal sleeve, surrounding the plastic carrier.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: November 27, 2007
    Assignee: Rolf Prettl
    Inventors: Peter Borst, Dietmar Barth