Patents by Inventor Fredrich von der Haar

Fredrich von der Haar 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).

  • Pump hose for a peristaltic pump
    Patent number: 5088522
    Abstract: A pump hose for a peristaltic pump consists of two arcuate portions that merge along kink lines so that the undeformed hose lumen has the cross-sectional shape of a convex lens. The joinings of the arcuate portions are joined by outwardly extending ribs. When the hose is pressed, only minor squeezing occurs at the joinings. The hose has a considerably improved squeezing and restoring behavior. The ribs prevent an excessive squeezing.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: February 18, 1992
    Assignee: B. Braun Melsungen AG
    Inventors: Dieter Rath, Fredrich von der Haar, Hans-Josef Gerlach, Reinhard Knuth