USPC 244/62

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U.S. patent classification subclass USPC 244/62 and its subcategories are for Aircraft propulsion -- that is, "Devices and arrangements for propelling aircraft in flight."[1][2]

Subclasses within USPC 244/62:

  • USPC 244/63 Launching: Devices and arrangements to assist in aircraft take-offs from land or water
  • USPC 244/64 Manual propulsion: Devices and arrangements for propelling aircraft by human agency without other power sources
  • USPC 244/65 Screw propellers: The arrangement devices on aircraft using helical screws rotating in air for propelling aircraft.
    • USPC 244/66 Tilting propellers: Aircraft screw propellers arranged so that the direction of propeller thrust can vary relative to the aircraft's horizontal axis in response to control mechanisms or changing conditions
    • USPC 244/67 Body encircling: Aircraft screw propellers arranged to rotate about the external periphery of aircraft bodies
    • USPC 244/68 Elongated propellers: Arrangement of aircraft screw propellers of the long helix type, in which the blades extend for substantially a full pitch length or more along the hub members.
    • USPC 244/69 Contra-propeller arrangements: Aircraft structures arranged to reduce the rotary motion of the slip-stream of aircraft propellers
  • USPC 244/70 Paddle wheel: Devices and arrangements for using the thrust developed by rotating paddle wheels for propelling aircraft. "Continue the search in this class, subclasses 9, 19, 20, and 27."
  • USPC 244/71 Reciprocating propeller: Devices and arrangements with aircraft that use the thrust developed by elements moving back and forth over substantially the same path for propelling aircraft. These elements usually are designed to have reduced resistance to motion in one direction.
  • USPC 244/72 Beating wing: Devices and arrangements relative to aircraft for using the thrust produced by flapping wings for propelling aircraft.
  • USPC 244/73 Fluid propeller: Devices and arrangements for propelling aircraft using reactions to jets or restricted masses of air or other fluid
    • USPC 244/74 Explosive jet: The arrangements and use of devices in which explosions produce a jet of air or other fluid
  • For propellers used only to steer or stabilize aircraft, not propel them, see USPC 244/92.[2]
  • For reaction motors, per se, capable of propelling any type of vehicle, see USPC class 60, Power Plants.[2]
  • For the combination of a motor driven propeller, per se, see USPC Class 416, Fluid Reaction Surfaces, i.e., Impellers.[2]
  • Devices for cooling internal combustion engines by means of air are classified in USPC 123, Internal-Combustion Engines, subclasses 41.56+, particularly subclass 41.7. This includes cowling devices for the engines to direct cooling air against engine parts. Combinations of impellers with driving means are ordinarily classified in USPC 416, Fluid Reaction Surfaces (i.e., Impellers), but such combinations with modifications to cool the engine are classified in USPC 123, subclasses 41.63+.[2]

References

  1. ↑ https://www.uspto.gov/web/patents/classification/uspc244/sched244.htm#C244S062000
  2. ↑ 2.0 2.1 2.2 2.3 2.4 Description of category USPC 244/62 at uspto.gov

See also

Patents in category USPC 244/62

Enclosing categories USPC 244
Subcategories USPC 244/63, USPC 244/64, USPC 244/65, USPC 244/70, USPC 244/71, USPC 244/72, USPC 244/73
Keywords Propulsion
Start year
End year
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