Patent US-1917-1290831
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Objective: Enable steep descent by heavier-than-air flying machines. Enable pilot to change speed "without manipulating the engine throttle." (Not clear why the second aspect is significant.)
An advantage of this design, says the patent text, is that the aircraft is small so it will be less visible from the ground if "suitably colored". Inference: patentee is thinking of military use, although he doesn't quite say so.
- Tech class CPC B64C23/005: Influencing air flow over aircraft surfaces, not otherwise provided for
- Inventor location: Arncliffe, near Sydney, state of New South Wales, Commonwealth of Australia
Patent family descending from Patent AU-1916-630
- Patent AU-1916-630 (English title: Improvements in aerial machines)
- Patent US-1917-1290831 (English title: Aerial machine, Supplementary to patent: Patent AU-1916-630)
- Patent GB-1917-106092 (English title: Improvements in Aerial Machines of the Heavier than Air Type, Supplementary to patent: Patent AU-1916-630)
- Patent FR-1917-487618 (English title: Aerial machine, Supplementary to patent: Patent AU-1916-630, National tech categories: FR 6.4)
Sources
- Patent 1290831 document and bibliographic info on espacenet
- Patent 1290831 at google patents
| Year filed | 1917 |
|---|---|
| Year granted | 1919 |
| Office | US |
| Patent number | 1290831 |
| Inventors | Albert John Fortescue |
| Inventor country | AU |
| Applicant person | Albert John Fortescue |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Aerial machine |
| English title | Aerial machine |
| Tech fields | |
| Filing date | 1917-03-29 |
| Full specification filed date | |
| Application number | 15843117 |
| Grant date | 1919-01-07 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | Patent AU-1916-630 |
| Related to aircraft? | 1 |
| Serial number | 158431 |
| Patent agent | James L. Norris |
| Assigned to | |
| National tech categories | |
| IPCs | |
| CPCs | CPC B64C23/005 |
| Family year | 1916 |
| First filing? | 0 |
| Cites these patents | |
| Citations from after 1930 | 0 |
| Application ID | 47977252 |
| INPADOC family ID | 43368490 |
| Number of text pages | 3 |
| Number of diagram pages | 3 |
| Number of figures | 6 |
| Number of claims | 3 |
