Patents by Inventor John Echols

John Echols 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).

  • Testing a circuit assembly that contains a piezoelectric switch
    Patent number: 9140757
    Abstract: A method of testing a circuit assembly that includes a piezoelectric switch may include driving a DC current into the piezoelectric switch. The method may further include measuring the time interval it takes to develop a predetermined voltage across the piezoelectric switch and comparing the measured time interval with a first predetermined time interval and a second predetermined time interval. The method may include identifying the circuit assembly as defective when the measured time interval is either less than the first predetermined time interval or more than the second predetermined time interval, and otherwise identifying the circuit assembly is operational.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: September 22, 2015
    Assignee: Essex Electronics, Inc.
    Inventors: Douglas Hogg, John Echols
  • TESTING A CIRCUIT ASSEMBLY THAT CONTAINS A PIEZOELECTRIC SWITCH
    Publication number: 20130257438
    Abstract: A method of testing a circuit assembly that includes a piezoelectric switch may include driving a DC current into the piezoelectric switch. The method may further include measuring the time interval it takes to develop a predetermined voltage across the piezoelectric switch and comparing the measured time interval with a first predetermined time interval and a second predetermined time interval. The method may include identifying the circuit assembly as defective when the measured time interval is either less than the first predetermined time interval or more than the second predetermined time interval, and otherwise identifying the circuit assembly is operational.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 3, 2013
    Inventors: Douglas Hogg, John Echols
  • Pressure sensitive electric signal generator
    Patent number: 4458173
    Abstract: A device is disclosed which is useful to generate electric signals particularly in close quarters. The preferred embodiment is described in terms of a piezoelectric signal generator incorporated into the beltline trim of an automobile and an alternate configuration in a flat sheet metal application. The invention is discussed in terms of its ability to take advantage of already existing structural elements of its host body and its ability to be attached without putting holes in such structure.
    Type: Grant
    Filed: February 4, 1983
    Date of Patent: July 3, 1984
    Assignee: Essex-Tec Corporation
    Inventors: Peter Kaufman, John J. Sharkey, John Echols
  • Keypad
    Patent number: D459671
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: July 2, 2002
    Assignee: Essex Electronics, Inc.
    Inventors: Peter Kaufman, Garrett Kaufman, John Echols, Richard W. Foster
  • Keypad
    Patent number: D491087
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: June 8, 2004
    Assignee: Essex Electronics, Inc
    Inventors: Peter Kaufman, Garrett Kaufman, John Echols