Patents by Inventor Josef Penasa

Josef Penasa 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).

  • Optical-electrical liquid probes
    Patent number: 4039845
    Abstract: An optical-electrical liquid probe for sensing the presence or absence of a liquid comprises a light emitter and a light receiver housed within a translucent hollow body. When there is no liquid adjacent a sensing part of the body, the light rays from the emitter pass to the receiver by refraction through the walls of the body. The presence of liquid adjacent the sensing part of the body causes the light rays to be refracted in such a manner that they no longer reach the receiver with the result that the state of the receiver changes.
    Type: Grant
    Filed: July 21, 1976
    Date of Patent: August 2, 1977
    Assignee: Hectronic AG
    Inventors: Jurg Oberhansli, Erwin Stalder, Willy Bulgheroni, Josef Penasa