Patents by Inventor O. Lew Wood

O. Lew Wood 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).

  • Crystal resonator with low acceleration sensitivity and method of manufacture thereof
    Patent number: 5168191
    Abstract: In a process of producing crystal resonators in which the direction and magnitude of the gamma vector is substantially the same for each resonator, a method of altering the resonator during the process to change the resonator mass, shape, or electrode placement so as to reduce the gamma vector magnitude of each crystal. This alteration may be done by adding mass, removing mass, or both adding and removing mass, or by positioning the electrodes to selectively position the electric field in the crystal, all in order to move the location of the active region of vibration and thereby reduce the gamma vector.
    Type: Grant
    Filed: September 17, 1990
    Date of Patent: December 1, 1992
    Assignee: Quartztronics, Inc.
    Inventors: Errol P. EerNisse, Roger W. Ward, O. Lew Wood
  • Method of manufacturing crystal resonators having low acceleration sensitivity
    Patent number: 5022130
    Abstract: In a process of producing crystal resonators in which the direction and magnitude of the gamma vector is substantially the same for each resonator, a method of altering the resonator during the process to change the resonator mass, shape, or electrode placement so as to reduce the gamma vector magnitude of each crystal. This alteration may be done by adding mass, removing mass, or both adding and removing mass, or by positioning the electrodes to selectively position the electric field in the crystal, all in order to move the location of the active region of vibration and thereby reduce the gamma vector.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: June 11, 1991
    Assignee: Quartztronics, Inc.
    Inventors: Errol P. EerNisse, Roger W. Ward, O. Lew Wood
  • Crystal resonator with low acceleration sensitivity and method of manufacture thereof
    Patent number: 4935658
    Abstract: In a process of producing crystal resonators in which the direction and magnitude of the gamma vector is substantially the same for each resonator, a method of altering the resonator during the process to change the resonator mass, shape, or electrode placement so as to reduce the gamma vector magnitude of each crystal. This alteration may be done by adding mass, removing mass, or both adding and removing mass, or by positioning the electrodes to selectively position the electric field in the crystal, all in order to move the location of the active region of vibration and thereby reduce the gamma vector.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: June 19, 1990
    Assignee: Quartztronics, Inc.
    Inventors: Errol P. EerNisse, Roger W. Ward, O. Lew Wood