Patents by Inventor Paul E. Blenkle

Paul E. Blenkle 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: 5220362
    Abstract: An ophthalmic lighting apparatus for operable attachment to ophthalmic articles, such as ophthalmic refractors, which articles are capable of supporting and deploying a protruding reading card rod, a reading card holder and accordingly a reading card during an ophthalmic examination. An illumination member is operably attached to one or more of the components of the reading card assembly for providing a controlled and standardized amount of light to the reading card. A position sensitive switch is interposed between a power source and the illumination member for automatically switching a light source upon movement of the reading card rod from a vertically protruding pre-ophthalmic examination position to a substantially horizontal protruding ophthalmic examination position.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: June 15, 1993
    Assignee: Woodlyn Inc.
    Inventor: Paul E. Blenkle