(under the class definition) Subject matter wherein the valve has one position which it will maintain under the influence of a spring or weight which comprises a biasing means, and force must be applied to the valve in order to have it take a different position.
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66+, for biased trip valves, and see the search notes thereto.
75, for valves having means to produce a snap action, which usually include biasing means.
SEE OR SEARCH CLASS
137, Fluid Handling,
455+, for line condition responsive valves, most of which involve biasing means, and see especially subclasses 524 and 530 for adjustable biasing means and 511+ for direct response condition responsive valves, i.e., check and safety valves. 222, Dispensing,
511+, for resilient biasing means for dispenser outlet elements.
