Patents by Inventor Subramaniam Padmanabhan

Subramaniam Padmanabhan 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: 4489650
    Abstract: To reduce the extremely high wear in steel belt printers, a revolving tape is arranged between the revolving steel belt and the platen.
    Type: Grant
    Filed: March 6, 1980
    Date of Patent: December 25, 1984
    Assignee: International Business Machines Corporation
    Inventors: Werner Hasler, Subramaniam Padmanabhan, Klaus Staudenmaier
  • Patent number: 4150619
    Abstract: Impact printing apparatus for recording at different character densities having an interposer unit movable between a plurality of print hammers and type chain to provide a translation function for the variable character-to-character distances required of the different character densities. During low density recording the interposer unit renders ineffective certain of the print hammers otherwise used for the higher density. A single type chain may be used with different interposer arrangements to obtain the various densities or type chains of different densities can be used.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: April 24, 1979
    Assignee: International Business Machines Corporation
    Inventors: Werner Hasler, Eckart Lennemann, Subramaniam Padmanabhan
  • Patent number: 4141290
    Abstract: Print hammer actuating apparatus of the double lever type in which one lever is moved in response to an input force and carries a pivotally mounted second lever which provides the output force through either an "inertia" principle or "ratio" principle. The angular velocity of the first lever is multiplied through those principles to provide greater impact velocity at the output of the second lever without requiring an increase of the input energy.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: February 27, 1979
    Assignee: International Business Machines Corporation
    Inventors: Werner Hasler, Subramaniam Padmanabhan