(under the class definition) Devices comprising means to sense a condition which may or may not be present or may occur spasmodically, and cause operation of a control device, without the intervention of a human operator, (e.g., liquid level or specific gravity responsive devices, temperature responsive devices or self-correlating devices).
(1) Note. For a definition of self-correlating see Class 137, Fluid Handling, subclasses 87.01+.
(2) Note. Control devices for signals or indicators and control devices comprising valves or closures across a passage operated to control fluid flowing in the passage by means sensing the pressure or velocity of the fluid flowing in said passage and control devices operated in response to means sensing inertia, gravity, time, the bottom of the well,
an obstruction in the well, a break, projection, cavity or joint in a well are not considered automatically operated in this class and are classified on other features.
SEE OR SEARCH THIS CLASS, SUBCLASS:
64+, for well devices with means indicating time or distance or with counting means or temperature responsive means, the temperature responsive means sensing temperature as part of an operating cycle or by insertion into a zone of predetermined temperature which causes a predetermined response.
66, for well devices with electrical indicating means. 113, for well devices with mechanical indicating means.
132, for well devices comprising packers or plugs with expanding anchors and having means to sense the end of a conduit.
206+, and the subclasses there noted for anchor devices caused to be set by a means sensing a cavity, joint or break in a wall or caused to be set by an inertia or gravity sensing means, especially subclasses 209+ for anchors caused to be set by inertia or gravity sensing means and subclasses 214+ for anchors caused to be set by means sensing a cavity joint or break in a well wall.
226, and the subclasses there noted for valves, closures or changeable restrictors caused to be operated by means sensing the well bottom or an obstruction or projection in the well.
