Patents by Inventor Karl H. Fuchs

Karl H. Fuchs 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: 5443185
    Abstract: A discharge apparatus for media has a medium pump and a compressed air pump, as well as control means through which, in stroke-dependent manner, precompression only takes place in the air pump during a first partial stroke and then during a further partial stroke delivery takes place from both pumps following a pressure-dependent opening of the delivery valve and finally during a further partial stroke delivery only takes place from the air pump. In order that the medium pump does not deliver to the outlet channel over intermediate and final partial strokes, delivery takes place back into the reservoir via the inlet channel.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: August 22, 1995
    Assignee: Ing. Erich Pfeiffer GmbH & Co. K.G.
    Inventor: Karl H. Fuchs