Patents by Inventor John C. Fravel

John C. Fravel 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).

  • Publication number: 20090107737
    Abstract: Methods for determining actuation of a capacitive button having at least three sensor electrode elements associated with at least three distinct sensor electrodes are described. In one embodiment, indicia from the at least three distinct sensor electrodes associated with the at least three sensor electrode elements comprising the capacitive button are received. At least three electrode values are generated from the indicia. The at least three electrode values are then utilized to determine actuation of the capacitive button.
    Type: Application
    Filed: October 27, 2008
    Publication date: April 30, 2009
    Inventors: Joesph K Reynolds, Tracy Scott Dattalo, John C Fravel, Izhak Baharav, John M Feland, III
  • Patent number: 5396384
    Abstract: A hard disk drive architecture includes a housing including a continuous base wall and continuous sidewalls extending from the base wall, and cooperating with a cover structure for enclosing and sealing an interior space for a plurality of rigid data storage disks mounted on a spindle, and a rotary actuator structure for positioning a stack of data transducer heads relative to concentric track locations defined on storage surfaces of the disks. The spindle includes a spindle motor for rotating the spindle and the disks. The housing defines an exterior recess region of the base wall. The recess region includes an opening for a connector pin array. A seal is provided for sealing the opening after the connector pin array is in place. A flex circuit mounting bracket within the interior space is provided for positioning and connecting to a flex circuit connecting to the rotary actuator structure and to the connector pin array.
    Type: Grant
    Filed: May 12, 1992
    Date of Patent: March 7, 1995
    Assignee: Quantum Corporation
    Inventors: Robert A. Caldeira, John C. Fravel, Richard G. Ramsdell, Romeo N. Nolasco
  • Patent number: 4103766
    Abstract: A serial printer comprises a carriage, a print member rotatably mounted to the carriage and including a plurality of character elements, a first drive coupled to the print member for rotating the print member to a desired rotational position in order to place a selected character element at a printing position adjacent a record medium to be printed upon, a second drive coupled to the carriage for moving the carriage along a predetermined path whereby the print member is caused to move to a desired printing position along the path, a first servo control coupled to the first drive and responsive to a first set of input data and instructions for controlling the direction and speed of rotation of the print member, a second servo control system coupled to the second drive and responsive to a second set of input data and instructions for controlling the direction and speed of movement of the carriage, and a programmed data processor coupled to the first and second servo control system for supplying at least some of
    Type: Grant
    Filed: January 13, 1977
    Date of Patent: August 1, 1978
    Assignee: Xerox Corporation
    Inventors: Frank D. Ruble, Louis H. Chang, John C. Fravel
  • Patent number: 4091911
    Abstract: A serial printer comprises a carriage, a print member rotatably mounted to the carriage and including a plurality of character elements, a first drive coupled to the print member for rotating the print member to a desired rotational position in order to place a selected character element at a printing position adjacent a record medium to be printed upon, a second drive coupled to the carriage for moving the carriage along a predetermined path whereby the print member is caused to move to a desired printing position along the path, a first servo control coupled to the first drive means and responsive to a first set of input data and instructions for controlling the direction and speed of rotation of the print member, second servo control means coupled to the second drive and responsive to a second set of input data and instructions for controlling the direction and speed of movement of the carriage, and a programmed data processor coupled to the first and second servo control system for supplying at least some
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: May 30, 1978
    Assignee: Xerox Corporation
    Inventors: Louis H. Chang, John C. Fravel, Carl E. Herendeen, Frank D. Ruble
  • Patent number: 4058195
    Abstract: A serial printer comprises a carriage, a print member rotatably mounted to the carriage and including a plurality of character elements, a drive coupled to the print member for rotating the print member to a desired rotational position, a device coupled to the print member for generating a plurality of periodic position signals each indicative of the rotational movement of the print member, and a device for storing a count indicative of the actual rotational position of the print member, the device for storing including a device responsive to an increment pulse for incrementing the count by one and a device responsive to a decrement pulse for decrementing the count by one.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: November 15, 1977
    Assignee: Xerox Corporation
    Inventors: John C. Fravel, Louis H. Chang, Harunori Yoshikawa
  • Patent number: 4037216
    Abstract: A serial printer comprises a carriage, a print member rotatably mounted to the carriage, drive means coupled to the print member for rotating the print member in a desired direction and at a desired speed, and control apparatus coupled to the drive means for generating a control signal to control the direction and speed of rotation of the print member.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: July 19, 1977
    Assignee: Xerox Corporation
    Inventors: Louis H. Chang, John C. Fravel