Patent US-1911-996366
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Helicopter with umbrella-shaped propellers, rotating in opposite directions, which will break of the fall of the vessel even if they stop; and exert some gyroscopic effects; air drawn through openings, forced; rotating at adjustable speed
- Inventor location: Seattle, King county, WA (FIPSloc=53033, (imputed by HistPat)
Sources
- Patent 996366 document and bibliographic info on espacenet
- Patent 996366 at google patents
| Year filed | 1910 |
|---|---|
| Year granted | 1911 |
| Office | US |
| Patent number | 996366 |
| Inventors | Walter W. Roberts |
| Inventor country | US |
| Inventor location | |
| Applicant person | Walter W. Roberts |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Aerial-navigation machine |
| English title | Aerial-navigation machine |
| Tech fields | helicopter, propeller, frame, rudder, stability |
| Filing date | 1910-09-16 |
| Full specification filed date | |
| Application number | 1910582366 |
| Grant date | 1911-06-27 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | 582366 |
| Patent agent | Wheatley |
| Assigned to | |
| National tech categories | USPC 244/6, USPC 244/122R, USPC 244/139, USPC 244/104CS |
| IPCs | |
| CPCs | CPC B64C23/005 |
| Family year | 1910 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 47465609 |
| INPADOC family ID | 43940489 |
| Number of text pages | 4 |
| Number of diagram pages | 3 |
| Number of figures | 6 |
| Number of claims | 7 |
