US PATENT SUBCLASS 123 / 41.01
COOLING

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

41.01COOLING {27}
41.02  DF  .~> Automatic coolant flow control {4}
41.13  DF  .~> Interrelated coolant flow and throttle control
41.14  DF  .~> System drained and/or heat-storing
41.15  DF  .~> Indicators and safety devices
41.16  DF  .~> Coolant sealed in cylinder valve or piston
41.17  DF  .~> Coolant released into cylinder or valve passages
41.18  DF  .~> Convertible
41.19  DF  .~> Refrigerating cycle
41.2  DF  .~> With vapor generation and/or condensing {1}
41.28  DF  .~> Multiple cylinders with equalized cooling
41.29  DF  .~> Parallel flow
41.3  DF  .~> Mixed air and liquid
41.31  DF  .~> With cooling of additional parts or materials {2}
41.34  DF  .~> Internal cooling of moving parts; e.g., hollow valves, pistons, and movable cylinder {3}
41.42  DF  .~> Liquid coolants other than water and water treatment
41.43  DF  .~> Movably mounted tank or radiator
41.44  DF  .~> With liquid coolant circulating means {3}
41.48  DF  .~> Devices for cooling liquid by air flow {1}
41.5  DF  .~> Yielding or resilient walls
41.51  DF  .~> Plural radiators and/or tanks in series
41.52  DF  .~> Engine or cylinder-mounted heat dissipators {1}
41.54  DF  .~> With vent
41.55  DF  .~> Combined
41.56  DF  .~> Air-cooled {7}
41.71  DF  .~> Plural materials
41.72  DF  .~> With jacketed head and/or cylinder {8}
41.85  DF  .~> Valve seats or guides

DEFINITION

Classification: 123/41.01

Such miscellaneous devices for cooling the working cylinder, piston, piston-rod, or other element of an internal-combustion engine as do not come within the terms of the definition of some one of the following subclasses of internal-combustion engines, cooling, and accessary devices designed for and used with cooling systems for internal-combustion engines and not classified in some appropriate cooling subclass.

(1) Note. The expressions "primary coolant" and "secondary coolant", found in the definitions of the indented subclasses, refer, respectively to a fluid employed to cool an engine surface by direct contact therewith and to a fluid employed to cool such contacting fluid. For example, the liquid which flows through a radiator for an internal-combustion engine is the primary coolant, whereas the air passing through the radiator to cool the liquid coolant is a secondary coolant.

(2) Note. Class 165 will receive the combination of an internal-combustion engine and radiator when the internal-combustion engine is included by name only.

(3) Note. For structures including shutters for controlling the air flow, which devices do not include significant internal-combustion engine structure, search Classes 49, 180, 236, and 454.

SEE OR SEARCH CLASS

60, Power Plants,

39.83, for cooling of parts of an engine of the internal combustion type; subclasses 597+ for a fluid motor driven by the waste heat of an internal combustion engine; subclasses 320+ for an internal combustion engine having a cooled exhaust or in which the exhaust is used as a heat source and subclass 714 for plural motors with a common cooling means.

165, Heat Exchange,

41+, for a heat exchanger installed on a vehicle, and subclasses 51+ for a heat exchanger installed on an engine. 180, Motor Vehicles,

68.4, and 68.6 for motor vehicle combinations including radiator mountings; and subclasses 68.1+ for hoods and such combinations including shutters. See (3) Note.

236, Automatic Temperature and Humidity Regulation,

34+, for automatic radiator cooling. See (3) Note.

237, Heating Systems,

70+, for heating system radiators, per se.

244, Aeronautics,

53, for aircraft engine cowling or enclosure devices; see (3) Note to subclass 53 in Class 244 for the line; and subclass 57, for radiators combined with aircraft structure.

417, Pumps,

372, for an interrelated or common cooling means for a pump and drive motor therefor.

418, Rotary Expansible Chamber Devices, 83+, for such devices provided with heat exchange means.

454, Ventilation,

3+, for ventilating cowls and subclasses 284+ for registers. See (3) Note.