Patents by Inventor Rudolf Haufe

Rudolf Haufe 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: 5297735
    Abstract: A hand shower has a shower housing having an inner end formed centered on an axis with an axially open central recess and an outer end carrying a shower head. A male coupling part adapted to be fixed to the end of a supply hose has a tubular outlet end engageable axially in the housing inner end. A latch element can be displaced radially of the axis in the inner end between a holding position engaging and axially retaining the coupling part in the recess and a freeing position allowing the coupling part to move axially freely into and out of the recess. The housing has a central feed tube forming the inner and outer ends and at least one rigid outer housing part surrounding and completely enclosing the central feed tube. Furthermore the shower includes a pair of such latch elements radially oppositely displaceable between the positions. These elements can be fitted without soldering or fusing into the housing for a very inexpensive and simple assembly of the device.
    Type: Grant
    Filed: May 15, 1992
    Date of Patent: March 29, 1994
    Assignee: Friedrich Grohe Aktiengesellschaft
    Inventors: Bruno Heimann, Eckhard Gransow, Rudolf Haufe, Bernd Bischoff
  • Patent number: 5056562
    Abstract: A plumbing fitting has a flexible hose suppliable with water under pressure and having an outer end, an upstream end piece having an upstream side connected to the outer end and a downstream side, and a downstream end piece having a downstream side and an upstream side. An outer sleeve has an upstream end and a downstream end and respective couplings releasably connect the upstream end of the sleeve to the downstream side of the upstream end piece and the downstream end of the sleeve to the upstream side of the downstream end piece. An inner tube having a downstream end connected to the upstream side of the downstream end piece and an upstream end connected to the downstream side of the upstream end piece forms a flow conduit therebetween. Seals are provided at the ends of the tube between same and the respective sides of the end pieces.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: October 15, 1991
    Assignee: Friedrich Grohe Armaturenfabrik GmbH & Co.
    Inventors: Manfred Pawelzik, Rudolf Haufe