Abstract: A method and a system for stabilizing the core of a mold when injection molding plastic, wherein each production cycle comprises the steps of:(a) injecting a first plastic through a first gate into a chilling cavity with a core so that the cavity is not filled.(b) cooling the injected first plastic in the chilling cavity to thereby solidify the first plastic.(c) injecting, subsequent to injecting the first plastic, but not necessarily subsequent to the first plastic becoming completely solidified, a second plastic through a second gate into the chilling cavity whereby the cooled injected first plastic impedes any movement of the core caused by injecting the second plastic and whereby the injected second plastic fills the cavity and fuses with the previously injected plastic.(d) cooling the injected second plastic in the chilling cavity to thereby solidify the fused unit.(e) ejecting the solidified molded unit.

Abstract: A system and method of thermal energy conversion is disclosed.

Abstract: A method and system for preventing permanent deformation during use and storage of encased expandites that constitute a thermodynamic working fluid for use in combination with a thermal fluid in a thermodynamic energy conversion system. The working fluid is made up of thousands of encased expandites, each of which includes a mass having a flexible covering encasing the mass for enabling rapid heat transfer between the mass and the thermal fluid, for enabling the encased expandite to maintain its integrity as a separate object when submerged in the thermal fluid, and for enabling the volume of the encased expandite to change in accordance with the characteristic interdependent relationship between changes in the density, temperature and pressure of the mass when the encased expandite is submerged in the thermal fluid. Each of the flexible coverings has a maximum containing volume prior to becoming permanently deformed.

Abstract: A thermodynamic energy conversion system includes a thermodynamic working fluid made up of thousands of expandites at a given pressure to thereby change buoyancy with respect to a thermal fluid; a mass transport conduit circuit for introducing the expandites to a thermal fluid at different combinations of temperature and pressure and transporting the thermodynamic working fluid and thermal fluid in response to pressure differentials created by concomitant buoyancy volume and density changes of the expandites as the thermodynamic working fluid is exposed to thermal fluid at different combinations of pressure and temperature; and a transducer for converting the pressure of fluid transported by the circuit to a useful form of energy.