Abstract: An oil cooler is mounted to a radiator so as to be in series therewith. The oil cooler is provided with a framework having four holes therein arranged in a rectangular pattern. In one embodiment, the holes are transverse, with a lower pair being axially aligned, and in another embodiment the holes are vertical, with the pairs of holes at the opposite transverse sides being vertically aligned. Mounted on the radiator are four spring metal straps which respectively carry pins received in an associated hole. In the one embodiment, removal of the upper pair of pins permits the cooler to pivot about the lower pair while, in the other embodiment, removal of the pair of pins at one side of the cooler will permit the cooler to pivot about the pins at the other side.

Abstract: A cooling radiator having a secondary cooling means and comprising a pair of spaced liquid coolant tanks, one of which is an inlet tank having a liquid coolant inlet adjacent one end and the other of which is a liquid outlet tank having an outlet adjacent its corresponding opposite end, interconnecting spaced coolant tubes between the tanks, a heat exchanger for cooling a second liquid such as engine oil located in the outlet tank with the heat exchanger having a spaced inlet and outlet and a confined liquid space therebetween for flow of this second liquid through this spaced and an internal fin within the heat exchanger located within an inner tube of the heat exchanger in heat exchange relationship with the liquid coolant in the outlet tank.

Abstract: The present invention relates to a heat exchange unit for cooling oil or other fluids.

Abstract: An oil cooler for an internal combustion engine comprises a housing for containing a coolant and an axially disposed center fixing tube extending through the housing. A plurality of plate-like oil chambers are disposed within the housing, each being formed by a pair of oppositely profiled cooling plates. The oil chambers are spaced apart axially along the fixing tube so that the space between the oil chambers forms cooling channels for a coolant. An oil inlet and outlet extend parallel to the fixing tube and communicate with all the oil chambers for supplying and discharigng oil directly from all the oil chambers. The oil inlet and outlet, as viewed in cross-section, lie along radii from the central axis of the oil chambers which are at an acute angle relative to one another, and a partition extends radially in the acute angle between the inlet and outlet so that oil supplied to the oil cooler is directed tangentially around the fixing tube toward the outlet.

Abstract: A built-in oil cooler, comprising an outer tube and an inner tube, the latter tube is provided with a plurality of dent and projection portions alternately formed on its surface in axial direction thereof. Said inner tube is inserted in said outer tube to keep its outside face having no dent portion in contact with inside face of said outer tube, forming oil space between both of said tubes. Oil within said oil space flows zigzag to assure very good heat transfer rate.

Abstract: A rotary regenerative air preheater has a preliminary heating stage for the cold air, before it reaches the regenerative mass, constituted by recuperative heating surfaces provided within the ducting which brings the cold air to the regenerative mass and which are heated by exhaust gas which has passed through the regenerative mass but has lost least heat to that mass. The surfaces take e.g. the form of tubes passing through the channel and gas is guided into these tubes by a gas-catching wing extending to close to one face of the regenerative mass.An embodiment of each of a rotating-and a stationary-mass preheater are described.