US PATENT SUBCLASS 73 / 35.02
.~ Fuel rating (e.g., octane rating)

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

35.01  DF  ENGINE DETONATION (E.G., KNOCK) {4}
35.02.~ Fuel rating (e.g., octane rating)

DEFINITION

Classification: 73/35.02

Fuel rating (e.g., octane rating):

(under subclass 35.01) Subject matter wherein a measurement of a quality of a test fuel is made by detecting an abnormal rapid combustion (e.g. knock) of the test fuel in the engine and comparing the knock of the test fuel with a knock value of a second fuel having a known fuel rating.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53.01+, for liquid analysis, per se.

SEE OR SEARCH CLASS

123, Internal-Combustion Engines,

575+, for diverse fuel supply for an internal-combustion engine.

261, Gas and Liquid Contact Apparatus, 36.2, for fluid distribution means in a carburetor.