Patents by Inventor Mark B. Kearney

Mark B. Kearney 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).

  • Patent number: 4300063
    Abstract: A multiple input window detector is disclosed which includes a balance pair of common base PNP transistors having multiple emitters connected to respective inputs for comparing either input to an upper threshold level established by a voltage divider. A pair of common emitter PNP transistors compare the inputs to a lower threshold level. The two outputs of each comparator are interconnected and the combined currents control an output stage which is driven to one state when both inputs are within the window established by the divider and is driven in the other state if either input is outside the window.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: November 10, 1981
    Assignee: General Motors Corporation
    Inventors: Daniel L. S. Dunphy, Mark B. Kearney
  • Patent number: 4276861
    Abstract: A vehicle mounted, spark ignited, internal combustion engine subject to bursts of ringing knock vibration of varying duration corresponding to knock of varying intensity includes apparatus effective to generate pulses in response to the bursts and of corresponding duration. Further apparatus delays the trailing edge of each pulse by a common predetermined duration to favorably reduce the ratio of the durations of such pulses before application to apparatus effective to control a knock reducing parameter of the engine. The reduced ratio of duration between short and long pulses provides more uniform control over the total range of knock intensity. The engine may also include apparatus to delay the leading edge of each pulse by a common predetermined duration to eliminate short noise pulses and improve the knock signal to noise ratio. If so, this apparatus is inserted prior to the trailing edge delay apparatus and the common predetermined duration of the latter is greater than that of the former.
    Type: Grant
    Filed: May 14, 1980
    Date of Patent: July 7, 1981
    Assignee: General Motors Corporation
    Inventors: Mark B. Kearney, Kenneth D. Mowery, L. Joseph Pechous