Solid state engine with alternating motion
Patent
·
OSTI ID:6450938
Heat energy is converted to mechanical motion utilizing apparatus including a cylinder, a piston having openings therein reciprocable in the cylinder, inlet and outlet ports for warm water at one end of the cylinder, inlet and outlet ports for cool water at the other end of the cylinder, gates movable with the piston and slidably engaging the cylinder wall to alternately open and close the warm and cool water ports, a spring bearing against the warm water side of the piston and a double helix of a thermal shape memory material attached to the cool end of the cylinder and to the piston. The piston is caused to reciprocate by alternately admitting cool water and warm water to the cylinder.
- Assignee:
- Dept. of Energy
- Patent Number(s):
- US 4325217
- OSTI ID:
- 6450938
- Resource Relation:
- Patent File Date: Filed date 21 Jan 1980; Other Information: PAT-APPL-113868
- Country of Publication:
- United States
- Language:
- English
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