Power plants – Motor operated by expansion and/or contraction of a unit of... – Mass is a solid
Patent
1992-12-23
1994-06-07
Lazarus, Ira S.
Power plants
Motor operated by expansion and/or contraction of a unit of...
Mass is a solid
60528, 359820, F01B 2910, F02G 104
Patent
active
053178750
ABSTRACT:
In a first preferred embodiment of a thermal rotary actuator constructed according to the present invention, an actuator body includes first and second spaced, parallel linear actuator elements each linear actuator element having a respective predetermined coefficient of thermal expansion (CTE) and respective first and second ends defining the linear actuator element length. The linear actuator elements, in response to a selected temperature differential therebetween, are thereby subject to a predetermined length differential. Means are provided for effecting the selected temperature differential in the first and second linear actuator elements to thereby effect the predetermined length differential. First yoke means, attached to the first ends of the first and second linear actuator elements, include fixing means for fixing the first ends in a predetermined spatial relationship, and means for flexibly attaching said fixing means to the reaction structure. Second yoke means are attached to the second ends of the first and second linear actuator elements and include means for flexibly attaching the moveable object to the second ends of the first and second linear actuator elements. The second yoke means, in response to said length differential, thereby translates the predetermined differential length to a proportional displacement of the moveable element. Second and third preferred embodiments include the addition of an auxiliary flexure system in the second yoke means.
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O'Brien Michael J.
Smith William B.
Close Thomas H.
Dudley Mark Z.
Eastman Kodak Company
Lazarus Ira S.
Raab Sara
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