Patents by Inventor Richard H. Hess

Richard H. Hess 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: 4262348
    Abstract: This liquid clock has a lower liquid reservoir and an upper-liquid reservoir connected by an overflow to the lower reservoir. A plurality of timekeeping reservoirs are positioned to allow liquid in them to stand at the same level as in the upper reservoir. Each of the timekeeping reservoirs has a liquid exit orifice which connects to one of a plurality of timekeeping tubes, each having timekeeping related indicia on it. A means is provided for dropping a liquid displacement member in each of the timekeeping reservoirs at predetermined time intervals, thus displacing liquid into the timekeeping tubes. A means for withdrawing the liquid displacement members from the timekeeping reservoirs does so between the predetermined time intervals. A pump supplies liquid to the upper reservoir from the lower liquid reservoir to maintain the level of liquid in the upper reservoir at the level of the overflow. Means is further provided for periodically emptying the timekeeping tubes at time related intervals.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: April 14, 1981
    Inventor: Richard H. Hess