Patent GB-1909-28995
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Cites Patent GB-1908-13809 which "described the hollow side of the blades of aerial propellers"; whereas "The object of the present invention is to obtain a similar favourable result with propeller blades of the more ordinary kind and without the 'lilienthal curve' underneath by making use of the upper side of the blades (when lifting) and the front side of the baldes (when transporting) for the purpose of increasing the efficiency."
Sources
- Neilson, 1910, Aeroplane Patents, p78
- Original patent document and bibliography entry on espacenet
- on google patents
| Year filed | 1909 |
|---|---|
| Year granted | 1909 |
| Office | GB |
| Patent number | 28995 |
| Inventors | Christian Lorenzen |
| Inventor country | GB, DE |
| Applicant person | Christian Lorenzen |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Improvements in or relating to Aerial Propellers |
| English title | Aerial Propellers |
| Tech fields | propeller |
| Filing date | 1909/12/11 |
| Full specification filed date | 1910/05/26 |
| Application number | 190928995D |
| Grant date | 1910/12/12 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | Yes |
| Serial number | |
| Patent agent | |
| Assigned to | |
| National tech categories | |
| IPCs | IPC B64C11/18 |
| CPCs | CPC B64C11/18 |
| Family year | 1909 |
| First filing? | Yes |
| Cites these patents | Patent GB-1908-13809 |
| Citations from after 1930 | |
| Application ID | 23592115 |
| INPADOC family ID | 11085964 |
| Number of text pages | 5 |
| Number of diagram pages | 1 |
| Number of figures | 4 |
| Number of claims | 4 |
