US PATENT SUBCLASS 299 / 1.05
AUTOMATIC CONTROL; SIGNALING OR INDICATING

Current as of: June, 1999
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299 /   HD   MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL

1.05AUTOMATIC CONTROL; SIGNALING OR INDICATING {4}
1.1  DF  .~> Ore/rock interface determination during cutting {1}
1.3  DF  .~> Of tunneling apparatus having a wall temporary support
1.4  DF  .~> Of hard material disintegrating machines {3}
1.9  DF  .~> Of material handling means

DEFINITION

Classification: 299/1.05

AUTOMATIC CONTROL; SIGNALING, OR INDICATING:

(under the class definition) Process or apparatus comprising (1) sensing a condition which may or may not occur and initiating, modifying, or terminating the operation of a power operated means or (2) providing a visual or audible manifestation or representation of the operation of a device for the benefit of an observer.

(1) Note. The sensing means may comprise a cutter and may be integrally connected to the control means.

(2) Note. A valve which senses and controls with the same surface (i.e., a check valve) is not included as a sensing and control means under this definition. However, a valve which senses with one surface and controls the flow of motive fluid to a motor with a separate surface is included as a sensing and control means.

SEE OR SEARCH CLASS

173, Tool Driving or Impacting,

2+, and the search there noted for automatic control of a tool driving or impacting device and subclasses 20+ for indicating or signaling means.

175, Boring or Penetrating the Earth,

24+, for automatic control of an earth boring means, subclass 39 for bit wear signal generating, and subclasses 40+ for an earth boring means or process with signaling, indicating, testing, or measuring.

340, Communications: Electrical,

690, for geophysical position responsive indicating systems.

364, Electrical Computers and Data Processing Systems,

130+, for generic data processing control systems.