Patents by Inventor Lawrence L. Anderson

Lawrence L. Anderson 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: 4780015
    Abstract: A platen assembly for an impact printer comprises the combination of an impact transducer between the backup plate and the type band of a printer and an impact isolator interposed between the transducer and the type band. The transducer comprises a strip of force sensitive material. The strip extends over a plurality of print positions. Electrode means in contact with the surfaces of the force sensitive material form discrete impact zones aligned with the print hammers. One of the electrode means is a continuous conductive strip on one side of the force sensitive strip. Plural conductive pads on the other side of the strip form the discrete impact zones. The continuous conductive strip is preferably on the side facing the type band and serves as the ground connection. The impact isolation means comprises plural force elements between the type band and the transducer element and preferably is part of a comb which can be conductive and provides stiffening to the force sensitive strip.
    Type: Grant
    Filed: October 31, 1986
    Date of Patent: October 25, 1988
    Assignee: International Business Machines Corporation
    Inventors: Lawrence L. Anderson, Edward F. Helinski, Johann H. Meier, Jack L. Zable