Patents by Inventor Rolf Karlstedt

Rolf Karlstedt 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: 8449767
    Abstract: An oil reservoir having an oil inlet fitting and at least one oil outlet fitting for connecting to a hydraulic system. The reservoir comprising a housing having a lower housing part and a reservoir cover which is connected to the lower housing part and includes an integrated oil filter. An oil filler neck, which can be closed by a cap, is configured on the housing cover. The reservoir housing is equipped with at least one guide element which is attached to at least one inside wall of the reservoir housing and forms a circular guidance track for the oil. This guidance track forces the oil flow in a circular manner, after entering the reservoir and passing through the oil filter but before exiting the oil reservoir, such that any air which may be present is separated from the oil and can exit the oil reservoir via an air outlet.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: May 28, 2013
    Assignees: Robert Bosch GmbH, ZF Friedrichshafen AG
    Inventors: Uwe Renner, Christoph Lipp, Rolf Karlstedt
  • Publication number: 20120091047
    Abstract: An oil reservoir having an oil inlet fitting and at least one oil outlet fitting for connecting to a hydraulic system. The reservoir comprising a housing having a lower housing part and a reservoir cover which is connected to the lower housing part and includes an integrated oil filter. An oil filler neck, which can be closed by a cap, is configured on the housing cover. The reservoir housing is equipped with at least one guide element which is attached to at least one inside wall of the reservoir housing and forms a circular guidance track for the oil. This guidance track forces the oil flow in a circular manner, after entering the reservoir and passing through the oil filter but before exiting the oil reservoir, such that any air which may be present is separated from the oil and can exit the oil reservoir via an air outlet.
    Type: Application
    Filed: November 13, 2008
    Publication date: April 19, 2012
    Applicants: ROBERT BOSCH GMBH, ZF FRIEDRICHSHAFEN AG
    Inventors: Uwe Renner, Rolf Karlstedt, Christoph Lipp