Patents by Inventor Charles L. Lovercheck

Charles L. Lovercheck 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: 4171900
    Abstract: A xerography type copy machine is disclosed. The machine has a photo conductor and a brush covered with a flexible sheet material for applying powdered material to the photo conductor of said xerography type machine. The flexible material contains particles of a permanently magnetized material, encapsulated in the flexible sheet. A permanent bar magnet is supported adjacent the flexible sheet on the side thereof remote from the photoconductor. The permanent magnet has a pole extending perpendicular to the direction of travel of the sheet so that when the magnetic field from the bar magnet passes through the laterally extending magnetic poles of the sheet, it alternately aids and opposes the field of the magnets on the sheet thereby causing the magnetic particles attracted to the sheet to bristle out and retract back to the sheet thereby causing the powder to form bristles which brush against the photo conductor and allow toner to be attracted to the charged parts of the photo conductor to form an image.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: October 23, 1979
    Inventors: Richard D. Brugger, Charles L. Lovercheck
  • Patent number: 4030823
    Abstract: A xerographic copier made up of a machine frame having a suspension mechanism supported in a cabinet so that the frame can be pulled out of the front of the cabinet for servicing. The machine has a drum covered with a removable photo-sensitive sheet of material held in place by double sided adhesive tape and a lens system made up of two lenses. The lenses are swung about an axis passing through the periphery of the drum, and the lenses are maintained at a fixed distance from the document support throughout their movement. A toner dispenser made up of magnetic rubber disposed in the form of a hollow cylinder which moves past a permanent magnet held in fixed position relative to the inner periphery of the cylinder is provided. The magnetic particles in the magnetic rubber are so magnetized that they provide a plurality of spaced magnetic poles, and the permanent magnet cooperates with these poles, causing the particles on the outer side of the hollow cylinder to erect in the form of brush bristles.
    Type: Grant
    Filed: March 13, 1975
    Date of Patent: June 21, 1977
    Inventors: Richard D. Brugger, Charles L. Lovercheck