Patents by Inventor Edward F. Zinna

Edward F. Zinna 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: 4030563
    Abstract: Four speakers, each having a small thickness, are arranged so as to form a cubic arrangement. The four speakers form the four side surfaces of the cubic arrangement, with each of two diametrically opposed speakers extending at an acute angle relative to a vertical plane perpendicular to the other two speakers. A top panel connects the top edge surfaces of the speakers and has thereon means for attaching the system to a ceiling, or the like. In a modification of the invention, the speaker system is surrounded by a decorative housing having a top and bottom circular surface connected by four decorative posts. The four posts lie adjacent to the four corner edges of the cubic configuration. A grill cloth surrounds the front faces of the speakers for decorative and acoustical functions.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: June 21, 1977
    Inventor: Edward F. Zinna