Patents by Inventor William Stewart Wentink

William Stewart Wentink 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).

  • Recording apparatus for magnetic disks using both sides of the disk
    Patent number: 3946439
    Abstract: Magnetic disk recording apparatus including a pair of magnetic transducers contacting the opposite sides of a magnetic disk and each carried by a swingable arm. The arms are interconnected together so that the swinging movement of one of the arms is transmitted to the other arm to cause an opposite swinging movement of the other arm for simultaneously moving the transducers away from the magnetic disk. An electromagnet actuates one of the arms so as to thereby also move the other arm.
    Type: Grant
    Filed: January 31, 1975
    Date of Patent: March 23, 1976
    Assignee: International Business Machines Corporation
    Inventors: Daniel Owen Castrodale, Steven Gary Steele, William Stewart Wentink, Stephen Edward Wheeler