Abstract: The master jaw assembly comprises at least three jaw members adapted to be mounted to a chuck, a collet adapter which is received within the jaw members and in an opening in the chuck, and a selected collet received and releasably fixed within the collet adapter.

Abstract: A heat exchanger for use in a Stirling cycle engine includes a plurality of disc-like plates which are stacked in coaxial fashion within a cylindrical housing, and are supported thereby. The plates are all identical, and are provided with a matrix of perforations extending therethrough parallel to the axis of the heat exchanger. The plates are all parallel and spaced slightly apart, and each plate is rotated about the axis of the device approximately two percent from the adjacent plates. The cylindrical housing includes a plurality of radially extending fins which are disposed within an annular fluid jacket.

Abstract: A drive mechanism for linking the pistons of a heat engine to a rotating drive shaft includes a housing through which the drive shaft extends in rotatable fashion. Secured to the drive shaft within the housing is a main bevelled gear. A plurality of bevelled drive gears engage the main gear, each drive gear being secured to a gear shaft which extends through the exterior of the housing. Secured to the exterior end of each gear shaft is a gear wheel, which meshes with a similar, free-wheeling gear wheel. A pair of eccentric arms are secured to each pair of meshing gear wheels, their distal ends being secured to a block. A piston rod is also secured to the block, so that the reciprocal motion of the piston rod may be transferred through the eccentric arms and the gear wheels to the drive gear and the main gear.