Patents by Inventor Philip A. Jeffrey

Philip A. Jeffrey 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).

  • Evaporative emissions control system for automotive vehicle
    Patent number: 5762692
    Abstract: An evaporative emission control system for an automotive vehicle includes a generally cylindrical casing having an adsorption zone containing hydrocarbon adsorbing agent, an antechamber extending within the casing to the adsorption zone, and a swirl inducing inlet passage for conduction of hydrocarbon laden air into the antechamber such that a rotational flow pattern will be established in the antechamber, with the rotational flow having an axis coincident with a longitudinal axis of the generally cylindrical casing.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: June 9, 1998
    Assignee: Ford Motor Company
    Inventors: James T. Dumas, Philip Jeffrey Johnson
  • Serial data clock recovery circuit using dual oscillator circuit
    Patent number: 5418496
    Abstract: A serial data clock receiver circuit (11) is provided that synchronizes a clock signal to data. The serial data clock receiver circuit (11) comprises a control circuit (21), a dual oscillator circuit (19), and a phase locked loop circuit (22). The control circuit (21) arms the dual oscillator circuit (19) for being enabled during an idle period. The phase locked loop circuit (22) provides a reference voltage for the dual oscillator circuit (19). The dual oscillator circuit (19) is responsive to both the data and control circuit (19) for providing a clock signal.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: May 23, 1995
    Assignee: Motorola, Inc.
    Inventors: David Ford, Emil N. Hahn, Michael D. Reed, Nandini Srinivasan, Philip A. Jeffrey