Power plants – Motor operated by expansion and/or contraction of a unit of... – Mass is a solid
Patent
1990-08-06
1992-01-14
Ostrager, Allen M.
Power plants
Motor operated by expansion and/or contraction of a unit of...
Mass is a solid
60528, F03G 706
Patent
active
050799207
ABSTRACT:
A hydraulic shape memory material force converter is provided comprising a shape memory material. The force converter utilizes hydraulic units and a hydraulic fluid. The hydraulic unit is changed from a first position to a second position when the shape memory material, connected at one end to one end of the hydraulic unit and its other to a fixed point or a second end of the hydraulic unit, changes from a martensitic to an austenitic state upon heating. The hydraulic fluid responds to the movement of the hydraulic unit by moving from the hydraulic unit to a receiving device, which receiving device performs work due to the motion of the hydraulic fluid. Upon cooling the shape memory material to change it from the austenitic state back to the martensitic state, the hydraulic unit returns to its original position, with a biasing means being provided to return the hydraulic unit to its rest position.
REFERENCES:
patent: 4031704 (1977-06-01), Moore et al.
patent: 4922718 (1990-05-01), Hochstein et al.
patent: 4945727 (1990-08-01), Whitehead et al.
patent: 4955196 (1990-09-01), Lin et al.
Groom Kenneth N.
Whitehead Charles A.
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