Patents by Inventor Olaf Langwald

Olaf Langwald 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: 8960370
    Abstract: A drain valve for draining liquid out of a container which comprises an essentially cylindrical opening that passes through a thickened area of the container wall, with an internally threaded section formed at an outer end thereof, followed by an interior space with a larger diameter into which a duct opens, and opposite the interior space an inner section with a smaller diameter opens into the container. A step is provided between the interior space and the inner section and serves as the seat for an associated end face of the valve element. A step between the interior space and the bore, on the one hand, and the inner end face of the valve element, on the other hand, are designed to co-operate as a valve seat which progressively opens and closes as the valve element is displaced.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: February 24, 2015
    Assignee: ZF Friedrichshafen AG
    Inventors: Olaf Langwald, Frank Schuhmacher, Ulf Lang
  • Publication number: 20140161656
    Abstract: What is proposed is a transmission pump (1), in particular a transmission oil pump of an automatic transmission, comprising a pump housing (2) and a pump cover (3) or an oil guide flange, with which in the case of a gear pump, the driving pump gear wheel (6) and, in the case of a vane cell pump, the vane cell wheel, is driven through a pump carrier (5) operatively connected to the pump drive shaft (4), whereas the pump carrier surface areas feature an inclination to the effect that the driving pump gear wheel (6) is led in an axial manner in the direction of the pump housing (2), and arrives at the structure at the pump housing (2).
    Type: Application
    Filed: June 14, 2012
    Publication date: June 12, 2014
    Applicant: ZF Friedrichshafen AG
    Inventors: Olaf Langwald, Mario Holder
  • Publication number: 20120241452
    Abstract: A drain valve for draining liquid out of a container which comprises an essentially cylindrical opening that passes through a thickened area of the container wall, with an internally threaded section formed at an outer end thereof, followed by an interior space with a larger diameter into which a duct opens, and opposite the interior space an inner section with a smaller diameter opens into the container. A step is provided between the interior space and the inner section and serves as the seat for an associated end face of the valve element. A step between the interior space and the bore, on the one hand, and the inner end face of the valve element, on the other hand, are designed to co-operate as a valve seat which progressively opens and closes as the valve element is displaced.
    Type: Application
    Filed: March 14, 2012
    Publication date: September 27, 2012
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Olaf LANGWALD, Frank SCHUHMACHER, Ulf LANG
  • Publication number: 20100218642
    Abstract: An oil cooling circulation for a vehicle transmission comprising a transmission enclosure (1) having an input pipeline (2) and a return pipeline (3) for oil exchange between the inner area of the transmission and an oil cooler. A control valve (5) is provided which, by activation of a pre-loaded valve part (6) sliding along a center line of the control valve (5), the return pipeline (3) can be coupled with the supply input line (2). The valve part (6) has, at the return pipeline (3), a pin shaped top part and the transmission enclosure (1) has a borehole (4), penetrating the supply input line (2) and the return pipeline (3), in which the control valve (5) is positioned. The valve part (6) of the control valve (5) is slidingly positioned between a borehole bottom and a provided supporting part (10; 10?; 10?; 10??) in the estuary of the borehole (4).
    Type: Application
    Filed: February 17, 2010
    Publication date: September 2, 2010
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Horst LEICHSENRING, Olaf LANGWALD
  • Patent number: 7334671
    Abstract: An actuating device (18) or a clutch (16) of a motor vehicle (2) comprising one electric motor (34), one gearing (36, 40, 42, 44) which converts rotational motion of the electric motor (34) into a translatory motion and one accumulator (52). The converter gearing comprises one recirculating ball spindle (44). The accumulator (52) is at least partly situated within the recirculating ball spindle (44), and at least parts (58, 60) of a displacement sensor (56) are situated within the recirculating ball spindle (44).
    Type: Grant
    Filed: October 11, 2003
    Date of Patent: February 26, 2008
    Assignee: ZF Friedrichshafen AG
    Inventor: Olaf Langwald
  • Publication number: 20080000315
    Abstract: The present invention relates to a parking lock mechanism (2) for a transmission (1), comprising a pawl (4), which can pivot from a neutral position into a locking position in which the transmission (1) is locked, whereby the pawl (4) is prestressed in the neutral position by way of a spring element. According to the invention, the spring element is a leaf spring (14). The present invention furthermore relates to a transmission (1) incorporating such a parking lock mechanism (2).
    Type: Application
    Filed: June 21, 2007
    Publication date: January 3, 2008
    Applicant: ZF Friedrichshafen AG
    Inventors: Heinz Reichert, Olaf Langwald
  • Publication number: 20060032721
    Abstract: An actuating device (18) or a clutch (16) of a motor vehicle (2) comprising one electric motor (34), one gearing (36, 40, 42, 44) which converts rotational motion of the electric motor (34) into a translatory motion and one accumulator (52). The converter gearing comprises one recirculating ball spindle (44). The accumulator (52) is at least partly situated within the recirculating ball spindle (44), and at least parts (58, 60) of a displacement sensor (56) are situated within the recirculating ball spindle (44).
    Type: Application
    Filed: October 11, 2003
    Publication date: February 16, 2006
    Inventor: Olaf Langwald