Abstract: An exhaust gas sensor probe and its method of manufacture are disclosed. A tube of ceramic material is arranged to support a resistive type ceramic exhaust gas sensor within the cup-shaped cavity in the end portion of the tube. The tube is also provided with a generally continuous groove around the exterior of the cup-shaped end portion to support a heater wire in close heat conductive relation to the sensor ceramic wafer. The ceramaic tube is fixedly received within a housing which may include for example sufficient electrical connective means in the form of electrical terminals to electrically communicate the sensor and the heater wire to an external source of electrical energy and/or a utilization means. The present invention also provides a heat retaining end cap member having an infrared reflective coating for assisting in the retention of heat for those resistive type sensor ceramics which require an operating temperature substantially higher than the temperature of their normal environment.

Abstract: A motor pump wherein the motor is a variable reluctance motor having a rotor which functions as an impellor to provide pumping action as a result of centrifugal force acting upon a fluid supplied to the motor pump. The motor pump is extremely simple in that it has only one moving part, its rotor, which is formed of a plurality of ferromagnetic elements spaced from one another with flow passages located between the elements. Fluid enters the pump on the radially inner side of the ferromagnetic elements and flows radially through the flow passages to the pump discharge outlet.