Patents Assigned to Tekram Associates
  • Patent number: 4261337
    Abstract: The solar heat collector includes an enclosure having a solar energy transmitting cover member and a solar energy absorbing base member. Within the enclosure, structure is provided, connected to a fluid inlet, for causing a stream or film of fluid to flow along the interior surface of the cover member. The same structure may be used to impart a separate flow of fluid along the energy absorbing base member. The cover member is oriented to prevent the gravitational forces on the fluid stream, flowing along the interior surface of the cover member, from overcoming the adhesion forces between the stream and the interior surface of the cover member. This stream removes condensation from the cover member as it captures heat therefrom. The stream may be created by spraying fluid on the interior surface of the cover member or by a fluid dispensing member having a fluid outlet adjacent the interior surface of the cover.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: April 14, 1981
    Assignee: Tekram Associates
    Inventors: Karl H. Brosenius, Arne Logdberg
  • Patent number: 4175698
    Abstract: A very well heat insulated water storage or accumulator tank of relatively large capacity as compared to the capacity of the hot water heating unit is interposed between the unit and the radiator system and is interconnected with the unit. Heated water from the top portion of the tank is used to preheat the unit prior to actuation thereof, and mixed water above a given temperature is fed to the unit from the tank during actuation, such that the corrosive condensation on the heating surfaces of the heating unit, caused by heating a cold surface, is eliminated thereby extending the useful life of the unit. When the unit is actuated, heated water from the unit fills the tank from the top side until a volume of non-heated return water from the radiator system, approximately equal to the capacity of the unit, remains in the bottom of the tank.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: November 27, 1979
    Assignee: Tekram Associates, Inc.
    Inventor: Karl H. Brosenius
  • Patent number: 4155506
    Abstract: A very well heat insulated water storage or accumulator tank of relatively large capacity as compared to the capacity of the hot water heating unit is interposed between the unit and the radiator system and is interconnected with the unit. Heated water from the top portion of the tank is used to preheat the unit prior to actuation thereof, and mixed water above a given temperature is fed to the unit from the tank during actuation, such that the corrosive condensation on the heating surfaces of the heating unit, caused by heating a cold surface, is eliminated thereby extending the useful life of the unit. When the unit is actuated, heated water from the unit fills the tank from the top side until a volume of non-heated return water from the radiator system, approximately equal to the capacity of the unit, remains in the bottom of the tank.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: May 22, 1979
    Assignee: Tekram Associates
    Inventor: Karl H. Brosenius
  • Patent number: 4115953
    Abstract: The system includes a plurality of movable heat insulating shutter sections forming a barrier to produce a "dead air gap" adjacent the interior of a window and increasing the heat insulation capacity of the windows. The sections are suspended by wheels, rollers or gliding fittings from guide tracks situated above the shutters and are movable therealong between opened and closed positions. The sections are provided with vertical and horizontal friction or pressure seals which, when the sections are in the closed position, seal the sections together and to the window embracement. The tracks and the suspending fittings are formed such that the sections can be pendulum-like pivoted away from the window in order to disengage the pressure of the seals and thus facilitate movement of the sections between the open and closed positions without friction at these seals.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: September 26, 1978
    Assignee: Tekram Associates
    Inventor: Karl Hilding Brosenius