Patents by Inventor David W. Hall

David W. Hall 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: 5514982
    Abstract: A low noise logic (LNL) family is disclosed. An inverter 10 has a pair of load devices NL1, NL2 coupled to the drains of NMOS transistors N 1, N2. The input signal is coupled to the gate of N 1. The drain of N 1 is coupled to the gate of N2. A constant current source 12 is coupled between V.sub.ss and the sources of the transistors N1,N2. Trickle current devices NTR1, NTR2 are coupled to the drains of N 1, N2, respectively to insure input control of the output states. A high logic signal on the gate of N1 steers the constant current to the load NL1 and turns NL2 off. A low logic signal on the gate of N1 turns N1 off and applies a high voltage to the gate of N2, turning N2 on. N2 steers the constant current to NL2.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: May 7, 1996
    Assignee: Harris Corporation
    Inventors: David W. Hall, J. G. Dooley, Arecio A. Hernandez
  • Patent number: 5250139
    Abstract: A lighted bonding iron having a heating unit which defines a plane. A handle is mounted to the heating unit. First and second light sources are incorporated in the handle. The light sources project nonintersecting beams obliquely toward the plane.
    Type: Grant
    Filed: March 6, 1992
    Date of Patent: October 5, 1993
    Inventor: David W. Hall