Patents by Inventor Donald E. Lipfert

Donald E. Lipfert 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: 4348594
    Abstract: A wind power generator includes a flexible sheet or fabric supported under tension within a housing frame which guides an airflow therethrough and across the surfaces of the membrane. As the airflow passes over the surfaces, vortices are created which cause the membrane to vibrate. Energy conversion units are coupled to the membrane to tap the oscillatory motion and convert it into other useful energy forms, e.g., electrical, hydraulic or mechanical. Alternately, the membrane can be formed of a plurality of fabric strips which are connected to the energy conversion unit and are dimensioned in width equal to the pitch of the vortices. The distances between the strips preferably are also equal in dimension to the vortices' pitch.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: September 7, 1982
    Inventor: Donald E. Lipfert
  • Patent number: 4283864
    Abstract: A cushioning material system or construction having at least one module comprising balanced levers and displaceable bearing means, as incorporated in footwear, and such a cushioning material further comprising bearing plates attached to a plurality of said modules which may be made in sheet form for various cushioning purposes.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: August 18, 1981
    Assignee: Deres Development Corporation
    Inventor: Donald E. Lipfert
  • Patent number: 4269527
    Abstract: An applicator for pulverizable substances. The applicator comprises, in co-operation, a resilient container for the pulverizable substance, a permeable membrane through which said substance passes and means for maintaining and releasing said substance.
    Type: Grant
    Filed: October 17, 1979
    Date of Patent: May 26, 1981
    Assignee: American Cyanamid Company
    Inventors: Donald E. Lipfert, Willfred Goldschmidt
  • Patent number: 4154069
    Abstract: A dispenser for use on an agitator-type washing machine is provided. Means are provided for mounting the dispenser on various machines by means of an adapter. The dispenser has a body of generally cylindrical shape which may be mounted on the agitator. The dispenser includes a measuring chamber for containing a volume of liquid such as bleach, soap, etc. Also included are dispensing and timing means for dispensing the liquid in the chamber a predetermined time after the initiation of agitator action. In this manner, liquid is not dispensed until after filling of the machine has occurred. In the first embodiment, the dispensing and timing means includes a double siphon arrangement. In a second embodiment, a single siphon arrangement is used.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: May 15, 1979
    Assignee: The Clorox Company
    Inventors: Donald E. Lipfert, Wiley A. Kittrell
  • Patent number: 3952737
    Abstract: A contraceptive device in the form of a pessary or cervical cap for attachment to the cervix, comprising a valve mechanism to permit outflow of material from the cervix and prevent inflow of material into the cervix.
    Type: Grant
    Filed: August 28, 1974
    Date of Patent: April 27, 1976
    Assignee: The Medevice Company
    Inventors: Donald E. Lipfert, Seymour L. Romney, Robert Zeidman, Willfred Goldschmidt