Patents by Inventor Gilbert H. Avery

Gilbert H. Avery 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).

  • Reset controller with improved input mechanism
    Patent number: 4394869
    Abstract: A controller for a damper maintains a substantially constant volumetric rate of flow of air through a duct into a controlled space for a given condition in the space and resets the rate of flow to three different levels as a function of three different conditions in the space. Two pneumatic actuators respond to the four conditions in the space and produce forces which vary with the conditions. A floating lever receives the forces and causes the controller to set the air flow as a function of the sum of the weighted values of the forces produced by the two actuators.
    Type: Grant
    Filed: December 16, 1981
    Date of Patent: July 26, 1983
    Assignee: Barber-Colman Company
    Inventor: Gilbert H. Avery
  • Dual reset controller
    Patent number: 4264035
    Abstract: A controller for at least one damper maintains a constant volume rate of flow of air through a duct into a controlled space for a given condition in the controlled space. The dual reset controller resets the volume rate of flow as functions of two sensed conditions.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: April 28, 1981
    Assignee: Barber-Colman Company
    Inventors: Dale E. Maxson, Gilbert H. Avery