Patents by Inventor James W. Sneed, Jr.

James W. Sneed, Jr. 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).

  • Dual threshold logic probe
    Patent number: 4110687
    Abstract: A logic probe includes a first lamp for indicating an input voltage level above a first predetermined magnitude or upper threshold, a second lamp for indicating an input voltage below a second predetermined magnitude or lower threshold, and a pulse lamp for indicating the change in the input voltage level. Circuit means are provided to control the operation of the third or pulse lamp so that the lamp operates in accordance with the position of a selector switch. When the switch is in a first position, the pulse lamp will operate in response to a change in the input voltage level through either one of the thresholds, and when the switch is in the second position, the pulse lamp will operate only if the input voltage level transitions both thresholds within a predetermined time.
    Type: Grant
    Filed: August 24, 1977
    Date of Patent: August 29, 1978
    Inventor: James W. Sneed, Jr.