Patents by Inventor Frank Spitzer

Frank Spitzer 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: 11988117
    Abstract: The present invention pertains to a method of determining a lubrication oil condition of a stationary gas engine comprising the steps of retrieving a lubrication oil temperature information and retrieving a lubrication oil level information from a lubrication oil level sensor, wherein the lubrication oil level sensor is a capacitance sensor, and a step of normalizing a lubrication oil level information over the lubrication oil temperature information.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: May 21, 2024
    Assignee: Caterpillar Energy Solutions GmbH
    Inventors: Darshit Shah, Jan-Rudolf Spitzer, Markus Frank
  • Patent number: 4723747
    Abstract: An extensible bar hanger assembly designed to support recessed lighting fixtures in a ceiling. A pair of double L shaped bar members, one on each side of a fixture, are extensible and contractable to adjust between ceiling joists or other ceiling support to provide a rigid mount for the fixture. The bar members are each longitudinally domed to provide interlocking and each include an elongated slot extending the major length of each respective bar. One end of each bar includes a side extending barbed tab which is secured to adjacent ceiling joists. The opposite ends of the bar members include precisely formed locks. In the case of one bar member, the lock is an offset T shaped foot. The other end lock is a trapezoidal shaped head. These ends lock the joints together by interlocking through the elongated slots in the opposite bar member.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: February 9, 1988
    Assignee: Capri Lighting
    Inventors: Warren Karp, Frank Spitzer
  • Patent number: 4291817
    Abstract: The panel enclosure is used to house electrical equipment and not only shields the equipment from stray RF fields but also protects the equipment against water, moisture and the like. The enclosure is in the form of a shallow rectangular box having an opening outlined by an upwardly sloping flange. A cover has a downwardly depending skirt or lip which overlaps the flange, the cover including an interior gasket which is positioned to seat over the entire perimeter of the flange. One side of the cover is hinged to the box and the other side has securing bolts passing through the lip to engage the sloping surface of the flange. By threading the bolts inwardly, the cover is cammed into tight engagement with the gasket to provide the desired weatherproof features.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: September 29, 1981
    Inventors: Erlys C. Spitzer, Frank Spitzer