(under subclass 866.1) Subject matter for modifying a signal produced by a sensing element to indicate a variation of the sensed condition during a unit of time.
(1) Note. The particular sensing element is either not claimed, not otherwise provided for in this class, or there are plural sensing elements, some of which are provided for in this class.
(2) Note. Included here are electrical, mechanical, or pneumatic mechanisms.
(3) Note. Included here are devices which have two sensing elements, one of which responds to changes in the sensed condition quickly and one of which responds to the sensed condition slowly.
SEE OR SEARCH THIS CLASS, SUBCLASS:
179, for rate of climb meters.
514.01+, for a device for utilizing an inertia element for measuring the rate of change in speed.
861+, for volume or rate of flow meters. SEE OR SEARCH CLASS
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,
335, for circuits having an output proportional to a rate of change of voltage input.