Patents Represented by Law Firm Boyle Frederickson Ziolkoski S.C.
  • Percussion drill and/or jack hammer with handle spring-buffered against the hammer housing
    Patent number: 6148930
    Abstract: A percussion drill and/or jack hammer has a handle that is spring-buffered against the hammer housing which has at least one straight guiding track running parallel to the longitudinal axis of the hammer. The handle can be moved to a limited extent along the guiding track in relation to the hammer housing and is spring-buffered in such a way that its movement against the guiding track is limited on all sides.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: November 21, 2000
    Assignee: Wacker-Werke GmbH & Co. KG
    Inventors: Rudolf Berger, Thomas Maurer