Patent US-1909-991331
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Propeller blades with some flexibility and become more concave in motion. Some variation in pitch is referred to.
- Tech category: CPC F04D29/382 Flexible blades
- Inventor location: Micheldever, Hants, England; a subject of the King of Great Britain and Ireland
- Diagrams identical to Patent GB-1909-27974 -- I'll say it's supplementary
Sources
- Patent 991331 document and bibliographic info on espacenet
- Patent 991331 at google patents
| Year filed | 1909 |
|---|---|
| Year granted | 1911 |
| Office | US |
| Patent number | 991331 |
| Inventors | Sidney Lawrence |
| Inventor country | GB |
| Inventor location | |
| Applicant person | Sidney Lawrence |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Aerial propeller |
| English title | Aerial propeller |
| Tech fields | aerial propeller |
| Filing date | November 23, 1909 |
| Full specification filed date | |
| Application number | |
| Grant date | May 2, 1911 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | Patent GB-1909-27974 |
| Related to aircraft? | |
| Serial number | 529622 |
| Patent agent | |
| Assigned to | |
| National tech categories | USPC 416/132R, USPC 416/132A, USPC 416/135, USPC 416/240 |
| IPCs | |
| CPCs | CPC F04D29/382 |
| Family year | 1909 |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | 3 |
| Number of diagram pages | 1 |
| Number of figures | 7 |
| Number of claims | 6 |
