Patent GB-1909-7745
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Proposes certain propeller blades with some flexibility "laterally" and/or "longitudinally". Claims a "flexible main stay" or a fabric covering, with several more details. Specifically intended for aircraft, either aeroplanes or dirigibles. Materials mentioned include bamboo, wood, and "light-sprung steel."
Diagrams indicate that the length of the blade might vary a bit, and that its curvature can vary too, perhaps associated with its speed of movement.
- Inventor location: No. 33, Nightingale Vale, Woolwich, London, GB
- Inventor occupation: Engineer
Sources
- Original patent document and bibliography entry on espacenet
| Year filed | 1909 |
|---|---|
| Year granted | 1909 |
| Office | GB |
| Patent number | 7745 |
| Inventors | Walter Charles Pitter |
| Inventor country | GB |
| Applicant person | Walter Charles Pitter |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | An Improved Blade for Propellers and the like |
| English title | Flexible aerial propeller blade |
| Tech fields | propeller, aerial propeller, construction |
| Filing date | March 31, 1909 |
| Full specification filed date | |
| Application number | 190907745D |
| Grant date | September 18, 1909 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | Yes |
| Serial number | |
| Patent agent | Hughes, Son and Thornton |
| Assigned to | |
| National tech categories | |
| IPCs | IPC B64C11/00 |
| CPCs | CPC B64C11/006 |
| Family year | 1909 |
| First filing? | Yes |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 23580177 |
| INPADOC family ID | 11075582 |
| Number of text pages | 2 |
| Number of diagram pages | 1 |
| Number of figures | 7 |
| Number of claims | 4 |
