Abstract: A rotary regenerator construction comprising a ceramic core adapted to rotate upon its central axis and a ring gear surrounding the periphery of the core for purposes of driving the core rotatably and a yieldable compliant ring sandwiched between the ring gear and the periphery of the core to prevent stresses in the core caused by differential rates of expansion of the core and the ring during operation of the regenerator in a gas turbine engine and during processing of the regenerator and the regenerator drive ring.

Abstract: A seal system for a rotary regenerator with a circular ceramic regenerator core, the seal system including a peripheral portion sealingly engaged with the margin of the core and a cross arm portion extending generally diametrically across the surface of the core, the peripheral seal portions on the cross arm portion being located in seal recesses formed in the gas turbine housing during the casting of the housing thereby forming a portion of the housing assembly, the seal portions being made in segments whereby provision is made for reducing or eliminating seal breakage and maintenance cost.