Patents by Inventor Roderick John Pettit

Roderick John Pettit 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).

  • Sounder control system
    Patent number: 6650232
    Abstract: A sounder control system, including a converter circuit for converting a drive signal to a signal for activating a sounder and a drive circuit for generating the drive signal. The drive circuit includes a microprocessor for receiving at least one input signal representative of one of a plurality of control parameters for the sounder control system and for adjusting the drive signal on the basis of the at least one input signal, such that the sounder exhibits a predetermined sound pressure level characteristic.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: November 18, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Walter Friedrich Strohbeck, Roderick John Pettit