(under the class definition) Devices in which the temperature control valve does not move on slight changes in temperature, but its operating force is stored up during a certain movement of the temperature responsive device, and then the valve (or controlling means) suddenly moves throughout its entire movement not provided for more specifically below.
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81, 83, for such devices incorporating a fluid motor which is relay operated.
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74, Machine Element or Mechanism,
100.1+, for snap action devices associated with mechanism for converting reciprocating motion to or from oscillating motion.