1977-12-02
1979-07-24
Evans, F. L.
G02B 702
Patent
active
041621204
ABSTRACT:
A linearly expanding and contracting linkage assembly, responsive to changes in temperature, is constructed from a plurality of elongated link elements having alternately dissimilar linear coefficients of expansion. The link elements are adjacently arranged in link pairs and the links in each pair are joined at a first end so as to appear folded. Each pair includes a first link element with a relativey large coefficient of expansion and a second element with a relatively small linear coefficient of expansion, so that the amount of linear movement of the second end of the second element with respect to the second end of the first element in each pair is due to the difference between the dissimilar linear coefficients of expansion. A plurality of link pairs are serially connected together at their second ends so that the total linear movement of the second end of the second link of the last serially connected pair with respect to the first end of the first link of the first pair is the sum of linear movements contributed by each of the serially connected pairs.
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Evans F. L.
Ford Aerospace & Communications Corp.
Godwin Jr. Paul K.
Sadler Clifford L.
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