Patents by Inventor Eduard Figwer

Eduard Figwer 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: 4440345
    Abstract: A sprinkler for irrigating large areas comprises a stationary bearing member (1) for the spray pipe (12) and also comprises a separate braking device (3). The braking device (3) comprises radial extensions (13), which are non-rotatably connected to the spray pipe (12). The desired braking is effected in that a free rotation of said radial extensions (13) is prevented by a high-viscosity fluid in the braking device (3). The radial extensions (13) which are non-rotatably connected to the spray pipe (12) may interdigitate with radial extensions (10) which are non-rotatably connected to the stationary housing (2) of the braking device (3). As a result, the high-viscosity fluid will be subjected to shear stress between adjacent radial extensions (10, 13), which are non-rotatably connected in alternation to the spray pipe (12) and the housing (2). To improve the braking action, interdigitating axial extensions may be connected to the radial extensions.
    Type: Grant
    Filed: August 19, 1980
    Date of Patent: April 3, 1984
    Assignee: Oesterreichische Salen-Kunststoffwerk Gesellschaft m.b.H.
    Inventors: Eduard Figwer, Franz Schmitzberger