Patents by Inventor Dale E. Maxson

Dale E. Maxson 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).

  • Air distributor with automatically closable damper
    Patent number: 4397223
    Abstract: A reciprocating pneumatic actuator moves the damper of an air diffuser between open and closed positions and is automatically vented to atmosphere if fire or high heat occurs in the vicinity of the diffuser. When the actuator is vented, the return spring of the actuator snaps the damper to its closed position. A heat responsive latch automatically holds the damper in its closed position and prevents the damper from dropping open in the event the return spring is weakened by heat.
    Type: Grant
    Filed: October 23, 1981
    Date of Patent: August 9, 1983
    Assignee: Barber-Colman Company
    Inventor: Dale E. Maxson
  • Double induction unit
    Patent number: 4281592
    Abstract: An air induction unit having a first induction means to induce secondary air through a first induction opening into a stream of primary air to produce an air stream of mixed primary and secondary air, and a second induction means to induce additional secondary air into the mixed air stream through a second induction opening.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: August 4, 1981
    Assignee: Barber-Colman Company
    Inventors: Dale E. Maxson, David Ober
  • 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
  • Multiple heat pipe heat exchanger and method for making
    Patent number: 4245380
    Abstract: A heat pipe heat exchanger has a plurality of heat pipes which are interconnected so as to permit fluid communication between the pipes at least during charging so that the heat pipes may be simultaneously filled with heat transfer fluid.
    Type: Grant
    Filed: November 1, 1978
    Date of Patent: January 20, 1981
    Assignee: Barber-Colman Company
    Inventor: Dale E. Maxson
  • Damper control for preventing spread of fire and smoke through an induction mixing box
    Patent number: 4189092
    Abstract: Upon sensing an excessive temperature in a plenum supplying secondary air to a mixing box, a thermostatic element opens a valve to exhaust air from a pneumatic actuator for opening a normally closed secondary air damper. This action permits the damper to close and so prevent flow of secondary air from the plenum into the mixing box. The control may be tested by applying auxiliary heat to the thermostatic element. The control may be made to prevent spread of smoke by making the application of heat to the thermostatic element responsive to a smoke detector.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: February 19, 1980
    Assignee: Barber-Colman Company
    Inventors: Dale E. Maxson, David E. Ober
  • Multiple heat pipe heat exchanger and method for making
    Patent number: 4180127
    Abstract: A heat pipe heat exchanger has a plurality of heat pipes which are interconnected so as to permit fluid communication between the pipes at least during charging so that the heat pipes may be simultaneously filled with heat transfer fluid.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: December 25, 1979
    Assignee: Barber-Colman Company
    Inventor: Dale E. Maxson