Abstract: A vehicle heating and cooling system has a distribution duct separated into two channels by a baffle for supplying separate air streams to the passenger and driver sides of the vehicle compartment. Two temperature control doors associated with the heater core and evaporator separately admit an air mix to the two channels for independent control of driver and passenger side temperature. Optionally a single door is used in place of the two temperature control doors so that at the time of manufacture the system can be configured as a single zone system. A rear air discharge opening is provided in one of the channels to supply a duct leading to the rear seat region of the vehicle compartment.

Abstract: An air/liquid heat exchanger for aircraft having ram pressure powered evaporative cooling.

Abstract: A variable displacement compressor having a rotary drive shaft coupled to a gas pressure positioned wobble plate carried by a drive mechanism including a drive journal and journal sleeve on the rotary drive shaft and a drive lug connected to the drive shaft having a slot operatively connected by a coupling pin to the journal. Thrust bearings located in the cylinder head and front head of the compressor axially position the drive mechanism within a gas pressured crankcase. The rear thrust bearing includes a race engaged by a coil spring on the shaft to provide relative axial movement between the shaft and the rear thrust bearing to compensate for end play between the thrust shoulders and the thrust bearings following assembly of the cylinder head and front head.

Abstract: A heat exchanger core having a plurality of spaced fluid conducting tubes operatively connected in series at their upper ends by projecting tank portions. The tubes have flattened main body portions that extend downward from the tank portions to terminal ends having rows of integral spacing and locking links formed with snap fasteners for releasably locking onto one another to connect the lower end of the tubes to one another providing column strength thereby preventing damage to corrugated metal air centers disposed between adjacent tubes by compression forces exerted on the core. In addition to the spacing and locking links, this core features integral snap fasteners to lock the separate plates of each tube together in face to face relationship so that the entire core is mechanically connected and interlocked and is ready for permanent connection by brazing.

Abstract: A coupling has first and second tube portions joined by a control collar that is rotatable to axially position the first and second tube portions in an installed position, a locked position and in a blow-off position. In the locked position, the tube portions are axially inserted and rotated and locked together by a biasing spring against separation and an O-ring member on one tube portion seals against the other tube portion to seal the tube portions together to prevent fluid leakage therefrom when in their locked position. The other tube portion includes a relief port which is opened for safety blow-off of pressure when the one tube portion is positioned in the blow-off position.

Abstract: A variable flow restrictor valve is disclosed that is adapted to be inserted in a fluid line to provide first and second alternative flow paths therethrough in accordance with the pressure differential between inlet and outlet ends of the valve. The assembly is characterized by use of a moveable orifice tube which defines one of the alternative paths and an intermediate part of a valve housing defines a flow path which forms another alternative flow path having flow therethrough regulated by a stop disk and a valve disk both of which are fixed to the orifice tube on either side of the intermediate part to position the valve disk to either close or open the another alternative flow path in accordance with the aforesaid pressure differential.

Abstract: A heating, ventilating and air conditioning system for vehicles incorporating a rotary air valve mounted in a housing for limited arcuate movement with respect to a pivot axis to adjust the amount of opening of two adjacent air flow windows to thereby control the routing and quantity of air flow through the heater core and a heater core bypass. The rotary valve is moved in a track radially spaced above peripheral edges in the housing defining the windows to eliminate frictional drag and wear of the sealing face of the air valve as well as the load on the motor or mechanical actuator. The valve is positioned at an infinitely variable number of positions for partial opening of the windows and a camming system is used to move the valve without drag into or from sealing positions with respect to the two windows.

Abstract: An instrument pointer attaching device has a hub with flat internal side walls that deflect outward in establishing a press fit with a spindle while also acting to limit the assembly force.

Abstract: A combination radiator and condenser apparatus for a motor vehicle has inlets and outlets adapted to be connected in both a coolant system for a liquid cooled engine and in a refrigerant system of an automobile air conditioning system. The apparatus includes a plurality of axially aligned fluid flow tubes having the same air centers and the tubes each extend between combination radiator and condenser tanks, in one embodiment the axially aligned fluid flow tubes are unitary, integral fluid flow tubes with a separate refrigerant vapor passage and a separate engine coolant passage therein. A method for simultaneously cooling engine coolant and refrigerant vapor in combined radiator and condenser apparatus for a motor vehicle includes the steps directing vehicle inlet airstream through common air centers between the axially aligned refrigerant vapor tubes and vehicle coolant tubes.

Abstract: A deflatable sealing member forms a weatherstrip to seal a closure opening. The sealing member includes an operative tubular section designed to provide tight interference engagement between the closure and vehicle body when vented to atmosphere and expanded by built-in resilient memory. A bellows pump is connected to the sealing member through a flow control circuit. The bellows pump serves to deflate the sealing member during closing of the closure. The bellows pump is adapted for convenient mounting in a cavity in the closure or vehicle body spaced from the closure hinge area. A flexible cable connects the bellows pump to the closure or vehicle body to provide the necessary actuation for operation of the bellows pump in response to the swinging movement of the closure. As the closure closes, a bleed port of fixed or variable size located at the pump vents the sealing member to ambient pressure, and the sealing member expands by resilient memory to its full cross section so as to provide a tight seal.

Abstract: A fluid pumping assembly including a housing and a plurality of pistons disposed parallel relative to one another and supported for reciprocal movement in the housing. The assembly also includes a shaft which is supported by the housing and which has a longitudinal axis. A wobble plate is mounted about the shaft. A drive mechanism is rotatably driven about the longitudinal axis of the shaft and drives the wobble plate through angulartory movement relative to the shaft thereby reciprocating the pistons. The shaft is nonrotatably supported in the housing but is precisely moveable coaxial of its longitudinal axis to predetermined points to adjust the position of the wobble plate thereby precisely varying the displacement of the assembly.

Abstract: A vacuum valve having a compliable selector plate.

Abstract: The bellows in the stroke control valve of a variable stroke axial piston wobble plate refrigerant compressor is partially filled with an anti-freeze solution and continuously exposed to both suction pressure and crankcase pressure. This has the effect of reducing the piston stroke at high compressor speeds while increasing suction pressure to maintain some air conditioning performance.

Abstract: In an automotive heater or air conditioner system the temperature control and the mode control for directing air flow to the desired outlet is controlled by a single actuator. A mixing chamber has inlet and outlet end walls for temperature control and mode control, respectively. Each wall has openings for air flow and has an associated rotary door for controlling air flow through the openings. The rotary doors are mounted on a common shaft for simultaneous rotation and the shaft is driven by a single actuator. A heater core is mounted in the chamber adjacent an opening in the inlet end wall. A mixer device blends hot and cold air in the chamber.

Abstract: Baffles are arranged relative to an oil cooler mounted in one of the tanks of a motor vehicle radiator so as to force coolant through the oil cooler rather than allow coolant to bypass same for enhanced heat transfer.

Abstract: A heat exchanger assembly has a pair of spaced extruded tanks and a tube and header subassembly including a pair of header plates on opposite ends of a plurality of spaced parallel tubes. The extruded tanks include stop surfaces thereon for locating the subassembly within the extruded tanks and the extruded tanks further include a pair of seal ribs and a pair of deformable side flanges defining a pocket for receiving flux material to secure the subassembly to the extruded tanks without exposing the flux material to the interior of the extruded tanks.

Abstract: A motor vehicle passenger compartment heating, ventilating and air conditioning system employing a split heater core. A central opening in the heater core is aligned with an outlet and the temperature of the air discharged into the passenger compartment can be varied by adjusting a pair of air temperature doors.

Abstract: A motor vehicle heating, ventilating and air conditioning system having a combined mode and temperature door that can be controlled by a single selector for automatic or manual automotive air conditioning control.

Abstract: An evaporator for an automotive air conditioner having a plurality of tubes arranged side by side so that the tubes form spaces for air centers and channel heated air past the sidewalls of the tubes. Each tube has a divider rib to define liquid and vapor passages for the flow of refrigerant around the end the rib in a general U-shaped flow. The ribs have spaced bypass openings therein so that each rib is able to allow the leakage of liquid refrigerant across the rib from the liquid to the vapor side to eliminate dry out areas and thereby increase heat exchanger efficiency.

Abstract: A transmission oil cooler has spaced elongated plates secured at the margins and ports at either end to define an oil flow channel. A center disposed between the plates for creating turbulence in the oil and enhancing heat transfer comprises a metal sheet folded to form generally planar fins in side-by-side relationship and the fins having louvers extending over most of their area. The center is disposed in the flow channel with the planes of the fins transverse to the oil flow or alternatively with the planes of the fins parallel to the oil flow.