Heat engine

Power plants – Motor operated by expansion and/or contraction of a unit of... – Mass is a solid

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F03G 706

Patent

active

043971512

ABSTRACT:
A pair of spooling means, such as cylinders, are rotatable about fixed and parallel axes. An elongated member with a planar surface moves in reciprocating motion essentially normal to the cylinder axes such that planar surface remains adjacent and essentially tangential to the cylinder walls. Nitinol bands annealed as straight lengths are fixed at their ends to the cylinder walls and the planar surface such that a portion of the bands become spooled or unspooled about each cylinder depending on the motion and position of elongated member. The motion of the elongated member is caused by application of heat energy to spooled cylinder causing its bands to stiffen and become straight and withdrawal of heat energy from unspooled cylinder causing its bands to become bendable.

REFERENCES:
patent: 3229177 (1966-01-01), Clarke
patent: 3291474 (1966-12-01), Clarke
patent: 4055955 (1977-11-01), Johnson

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