Patents by Inventor Melvin C. Carlson

Melvin C. Carlson 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).

  • Control installation for variable volume air diffusers
    Patent number: 4694989
    Abstract: In a self-powered diffuser for a variable volume air distribution system, an installation for the control components which facilitate adjustment, modification and system start up. A Tee fitting located in the control compartment feeds through the bulkhead and into the diffuser to sense the flow rate of air in the diffuser. One leg of the Tee fitting is available to receive a tube in order to permit servicemen to actually measure the flow rate from below the ceiling. The maximum flow rate is adjustable from below the ceiling and is carried out by an adjustment mechanism having enhanced stability and reliability. A thermostat in the control compartment can be installed, serviced and replaced if necessary from below the ceiling.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: September 22, 1987
    Assignee: Tempmaster Corporation
    Inventors: Melvin C. Carlson, Raymond H. Dean
  • Control installation for variable volume air diffusers
    Patent number: 4694988
    Abstract: In a self-powered diffuser for a variable volume air distribution system, an installation for the control components which facilitate adjustment, modification and system start up. A Tee fitting located in the control compartment feeds through the bulkhead and into the diffuser to sense the flow rate of air in the diffuser. One leg of the Tee fitting is available to receive a tube in order to permit servicemen to actually measure the flow rate from below the ceiling. The maximum flow rate is adjustable from below the ceiling and is carried out by an adjustment mechanism having enhanced stability and reliability. A thermostat in the control compartment can be installed, serviced and replaced if necessary from below the ceiling.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: September 22, 1987
    Assignee: Tempmaster Corporation
    Inventors: Melvin C. Carlson, Raymond H. Dean
  • Control installation for variable volume air diffusers
    Patent number: 4648552
    Abstract: In a self-powered diffuser for a variable volume air distribution system, an installation for the control components which facilitate adjustment, modification and system start up. A Tee fitting located in the control compartment feeds through the bulkhead and into the diffuser to sense the flow rate of air in the diffuser. One leg of the Tee fitting is available to receive a tube in order to permit servicement to actually measure the flow rate from below the ceiling. The maximum flow rate is adjustable from below the ceiling and is carried out by an adjustment mechanism having enhanced stability and reliability. A thermostat in the control compartment can be installed, serviced and replaced if necessary from below the ceiling.
    Type: Grant
    Filed: March 10, 1986
    Date of Patent: March 10, 1987
    Inventors: Melvin C. Carlson, Raymond H. Dean