Patent FR-1909-402280
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Propeller blades are mounted in such a way that angle of incidence is adjusted in accordance with the aircrafts speed of translation. Concave and convex blade surfaces are used in combination with the above in the interests of presenting a stabilizing queue automatically harmonized with aircraft speed variation. These factors of "play" are limited as appropriate.
This patent and Patent GB-1909-10098 both refer to a Belgian predecessor. We are unsure as to Esnault-Pelterie's reasons for filing first in Belgium.
- Inventor location: Seine, France
Sources
- {{esp|FR|402280A Bibliographical data via Espacenet]
- Original via Espacenet
| Year filed | 1909 |
|---|---|
| Year granted | 1909 |
| Office | FR |
| Patent number | 402280 |
| Inventors | Robert Esnault-Pelterie |
| Inventor country | FR |
| Applicant person | Robert Esnault-Pelterie |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Hélice propulsive à ailes automatiquement orientables suivant le régime de vitesse |
| English title | Propulsive blade with automatically-orientating wings (responsive therein to aircraft speed) |
| Tech fields | propellers, stability, propulsion |
| Filing date | April 21, 1909 |
| Full specification filed date | |
| Application number | 402280D |
| Grant date | August 25, 1909 |
| Granted? | Yes |
| Publication date | October 2, 1909 |
| Supplementary to patent | Patent BE-1908-May 22 Robert Esnault-Pelterie |
| Related to aircraft? | Yes |
| Serial number | |
| Patent agent | Armengaud jeune |
| Assigned to | |
| National tech categories | FR 6.4 |
| IPCs | IPC B64C11/34 |
| CPCs | CPC B64C11/343 |
| Family year | 1908 |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 19221566 |
| INPADOC family ID | 5299494 |
| Number of text pages | 2 |
| Number of diagram pages | 1 |
| Number of figures | 3 |
| Number of claims | 3 |
