Patent US-1920-1358603
Aeroplane with propellers envisioned as making direct vertical ascents (i.e. at or nearly at a right angle with the ground):
These propellers are disposed in such relation to the sustaining surfaces that the propeller slip stream acts upon practically the full surface area as well as upon the controlling surfaces usually mounted at the wing tips and at the tail end of the machine.
In other words, the direct effect of the propellers on the air around the wings becomes a key part of propulsion. ("Slip stream" later defined as "both the entering and exit stream of air passing through the propeller or propellers.")
The airplane design includes unique landing gear using skids which enables the vessel to be tipped sharply upward before takeoff.
Cited by six patents after 1950.
Sources
- Patent 1358603 document and bibliographic info on espacenet
- Patent 1358603 at google patents
- US1358603 on Google Patents
Inventor location (imputed by HistPat): Washington, DC (FIPSloc=11001)
| Year filed | 1917 |
|---|---|
| Year granted | 1920 |
| Office | US |
| Patent number | 1358603 |
| Inventors | Albert Francis Zahm |
| Inventor country | US |
| Applicant person | |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Hovering aeroplane |
| English title | Hovering aeroplane |
| Tech fields | airplane, landing, airfoil, navigation, propulsion, marine |
| Filing date | August 10, 1917 |
| Full specification filed date | |
| Application number | 185488 |
| Grant date | November 9, 1920 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | Yes |
| Serial number | 185488 |
| Patent agent | |
| Assigned to | |
| National tech categories | |
| IPCs | IPC B64C23/00 |
| CPCs | CPC B64C23/005, CPC B64C2700/7271 |
| Family year | 1917 |
| First filing? | Yes |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 48481471 |
| INPADOC family ID | 43531458 |
| Number of text pages | 4 |
| Number of diagram pages | 1 |
| Number of figures | 3 |
| Number of claims | 6 |
