USPC 244/28
LTA aircraft with propulsion from flapping wings.
Category within USPC 244/24, 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]
244/28 defined as follows:[1]
Airship and beating wing sustained: This subclass is indented under subclass 24. Propelled aeronautical machines sustained by their buoyancy relative to the air, having also provision for sustentation or vertical lift by the downward thrust developed by flapping or reciprocating blades attached to the machines. These blades may also provide a part or all of the forward propulsion.
(1) Note. For machines having fixed sustaining air foils as well as beating wings, see this class, subclass 11.
(2) Note. For machines sustained by beating wings alone, see this class, subclass 22.
(3) Note. For beating wing construction, per se, see this class, subclass 72.
CPC does not seem to have a category for airships powered by flapping, and patents classified as USPC 244/28 often fall into the more general LTA category CPC B64B1/00.
Enclosing categories | USPC 244/24 |
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Subcategories | |
Keywords | Flapping, Ornithopter |
Start year | |
End year |
Patents in category USPC 244/28
- Patent US-1914-1108444 (Inventors: Sarkis Jelalian)
- Patent US-1867-80107 (English title: Aerial car, Inventors: Onofrio Abbruzo, Filing date: 1867-09-14)
- Patent US-1874-154654 (English title: Improvement in apparatus for navigating the air, Inventors: Micajah Dyer, Filing date: 1874-06-10)
- Patent US-1875-165881 (English title: Steerable air-ship, Inventors: Frederick W. Schroeder, Filing date: 1875-07-01)
- Patent US-1885-381106 (English title: Apparatus for aerial navigation, Inventors: Blaise Bontems, Supplementary to patent: Patent FR-1885-168266, Filing date: 1885-05-12)
- Patent US-1886-353193 (English title: Air-Ship, Inventors: Marby P. Appling, Filing date: 1886-03-02)
- Patent US-1887-361855 (English title: Aerial navigation, Inventors: William Beeson, Filing date: 1886-10-26)
- Patent US-1889-399783 (English title: Airship, Inventors: Herman A. J. Rieckert, Filing date: 1888-04-10)
- Patent US-1888-398984 (English title: Human-powered flapping wings with balloon, Inventors: Reuben Jasper Spalding, Filing date: 1888-09-01)
- Patent US-1888-411779 (English title: Flying-machine, Inventors: Nicholas H. Borgfeldt, Filing date: 1888-11-03)
- Patent US-1892-478905 (English title: Air-Ship, Inventors: Burr Frank Barnes, Supplementary to patent: Patent US-1891-460194, Filing date: 1891-12-05)
- Patent US-1896-565805 (English title: Air-Ship, Inventors: Charles Abbott Smith, Filing date: 1896-04-02)
- Patent US-1897-592704 (English title: Aerial machine, Inventors: Jacob D. Graybill, Filing date: 1896-05-26)
- Patent US-1897-605579 (English title: Flying machine, Inventors: Fritz Alexander Jone, Supplementary to patent: Patent CH-1893-6380, Filing date: 1897-03-18)
- Patent US-1900-688135 (English title: Air-Ship, Inventors: John Spies, Filing date: 1900-09-22)
- Patent US-1902-702120 (English title: Air-ship, Inventors: Harvey B. Van Voorhis, Filing date: 1901-12-11)
- Patent US-1907-867083 (English title: Airship, Inventors: Arthur G Russell, Filing date: 1905-09-14)
- Patent US-1908-877529 (English title: Air-ship, Inventors: Peter Theodor Tkatzschenko, Filing date: 1907-01-07)
- Patent US-1909-917695 (English title: Air-ship, Inventors: Harry Wells, Filing date: 1907-08-16)
- Patent US-1908-888301 (English title: Air-ship, Inventors: George Bold, Filing date: 1907-11-07)
- Patent US-1909-916626 (English title: Flying-machine, Inventors: Max Strzelecki, Filing date: 1908-03-12)
- Patent US-1909-942958 (English title: Flying machine, Inventors: Thomas F. Dunn, Filing date: 1908-09-04)
- Patent US-1909-937956 (English title: Air-Ship, Inventors: Wiley C. Perry, Filing date: 1909-04-16)
- Patent US-1913-1069823 (Inventors: Alfred M. Sipes, Filing date: 1912-09-16)
- Patent US-1914-1116263 (Inventors: William D FRENCH, Filing date: 1912-12-14)
- Patent US-1913-1071505 (English title: Airship, Inventors: Alexander Bryant, Filing date: 1913-03-18)