Difference between revisions of "USPC 244/25"
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| + | [[USPC 244/24]] is for LIGHTER-THAN-AIR AIRCRAFT: Miscellaneous aircraft which ordinarily have a total weight less than or equal to that of the volume of air which they displace and are therefore sustained by their buoyancy with respect to the air.<ref name=usptodefs/> | ||
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| + | Within 244/24:<ref name=usptodefs>https://www.uspto.gov/web/patents/classification/uspc244/defs244.htm</ref> | ||
| + | * '''USPC 244/25''' Airships with sustaining wings: Propelled aeronautical machines sustained by their buoyancy relative to the air, having also provision for sustentation by aerodynamic action on airfoils in fixed relation to the machines. | ||
| + | *(1) Note. In this subclass the machines are primarily lighter-than-air craft with the fixed sustaining airfoils providing additional sustentation. | ||
| + | *(2) Note. Machines which are primarily airplanes but have provision for carrying some lighter-than-air gas to diminish their weight are found in [[USPC 244/5]]. | ||
| + | {{References}} | ||
{{Techtype | {{Techtype | ||
| − | |Enclosing categories=USPC 244 | + | |Enclosing categories=USPC 244/24 |
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Revision as of 15:47, 24 April 2018
USPC 244/24 is for LIGHTER-THAN-AIR AIRCRAFT: Miscellaneous aircraft which ordinarily have a total weight less than or equal to that of the volume of air which they displace and are therefore sustained by their buoyancy with respect to the air.[1]
Within 244/24:[1]
- USPC 244/25 Airships with sustaining wings: Propelled aeronautical machines sustained by their buoyancy relative to the air, having also provision for sustentation by aerodynamic action on airfoils in fixed relation to the machines.
- (1) Note. In this subclass the machines are primarily lighter-than-air craft with the fixed sustaining airfoils providing additional sustentation.
- (2) Note. Machines which are primarily airplanes but have provision for carrying some lighter-than-air gas to diminish their weight are found in USPC 244/5.
References
| Enclosing categories | USPC 244/24 |
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| Start year | |
| End year |
