Reciprocating thermal actuator with hydraulic multiplier

Details Reciprocating thermal actuator with hydraulic multiplier Reciprocating thermal actuator with hydraulic multiplier

1982-01-11

1983-03-01

Ostrager, Allen M.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Mass is a liquid

60528, 374195, F03C 500

Patent

active

043751520

ABSTRACT:
A reciprocating thermal actuator with hydraulic multiplier has a thermally expansible fluid (expansible by heating or in an alternative embodiment by cooling) and heat exchange means including powered means for causing the thermally expansible fluid to cycle from expanded to nonexpanded state, in the process linearly driving a small area portion of a first piston which, in turn, through a large area portion of the first piston and hydraulic fluid provision drives a second, smaller-area piston to produce a linear output motion; return may be under spring bias; a free-floating bore-fitting second piston structure and a piston sleeve head at the motion output which has a sleeve returning and guiding on a portion of the housing for stability are also disclosed.

REFERENCES:
patent: 1176727 (1916-03-01), Clorius
patent: 2316611 (1943-04-01), Neuse
patent: 4222239 (1980-09-01), Negishi

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