Patents by Inventor Louis R. Focht

Louis R. Focht 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).

  • Vortex shedding mass air flow sensor with stabilized fluid flow
    Patent number: 4455877
    Abstract: A device for measuring the velocity of fluid includes a vortex generating means positioned in the fluid stream so that vortices are formed in the wake of the generating means. Plates elongated in the direction of fluid flow are positioned adjacent the vortex generating means to improve detection of the vortices by increasing the signal to noise ratio.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: June 26, 1984
    Assignee: Ford Motor Company
    Inventors: Chester J. Blechinger, Louis R. Focht
  • Engine pressure and knock sensor
    Patent number: 4446724
    Abstract: A combination pressure and knock sensor produces an electrical signal in response to the intake manifold absolute pressure of an internal combustion engine. A high pass filter is coupled to the output of the sensor for providing a signal indicative of engine knock. A low pass filter is coupled to the output of the sensor for providing a signal indicative of absolute intake manifold vacuum pressure.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 8, 1984
    Assignee: Ford Motor Company
    Inventor: Louis R. Focht
  • Velocity and mass air flow sensor
    Patent number: 4440027
    Abstract: A mass air flow sensor (10) has a vortex generator (12) positioned in the air flow for generating two streams of vortices. Spaced vortex detectors (20), (22) are each positioned the same distance downstream of vortex generator (12) in one of the two streams of vortices. Vortex detectors (20), (22) are coupled to a differential amplifier (24) which reduces noise signals applied equally to vortex detectors (20), (22) and enhances vortex signals alternately applied to vortex detectors (20), (22).
    Type: Grant
    Filed: May 26, 1982
    Date of Patent: April 3, 1984
    Assignee: Ford Motor Company
    Inventor: Louis R. Focht
  • Engine knock anticipation
    Patent number: 4428344
    Abstract: An engine operating parameter which anticipates knock, such as throttle angle position, is used in combination with a knock sensor to generate a control signal to retard engine spark. For example, the relatively slow response of a low noise sensed knock signal can be compensated by a relatively fast response signal indicating change in the throttle angle position. Thus earlier and improved control of knock can be achieved.
    Type: Grant
    Filed: January 8, 1982
    Date of Patent: January 31, 1984
    Assignee: Ford Motor Company
    Inventor: Louis R. Focht
  • Piezoelectric apparatus for generating electrically distinguishable bipolar signals
    Patent number: 4409548
    Abstract: This specification discloses an apparatus and method for providing electrically distinguishable signals occurring as a function of the position of a moving element. The electrical signals are generated by a piezoelectric apparatus and can be used to determine a variable such as revolutions per minute of the movable element. Particular ones of the electrically distinguishable signals can be used for initiating a function such as the firing of the spark plugs.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: October 11, 1983
    Assignee: Ford Motor Company
    Inventor: Louis R. Focht