Patent BE-1913-250457.252822
This is a perfectionnement to Patent BE-1912-250457, which brevet of invention was filed 1912-10-29.
« L’aire active de l’hélice, par rapport au plan horizontal qui est celui de la rotation, est comprise entre un seul pourtour circonférentiel extérieur formant la haute, et un pourtour circonférentiel intérieur formant le moyeu ; cette aire est divisée, dans le sens radial, en plusieurs plans porteurs, dont chacun est en retrait par rapport à l’autre. »
Note in the above typographical corrections, relative to the source : “haute” rather than “haute”, “circonférentiel” spelled consistently
“The active area of the propeller, with respect to the horizontal plane which is that of rotation, is comprised between a single circumferential periphery forming the upper exterior, and an inner circumferential periphery forming the hub; this area is divided, in the radial direction, into several load-bearing planes, each of which is set back with respect to the other.”
Sources
- RdBdI
- Inventor location: Brussels
- Patent agent location: Brussels
| Year filed | 1913 |
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| Year granted | |
| Office | BE |
| Patent number | 252822 |
| Inventors | Alfred E. Wunderlich |
| Inventor country | BE |
| Applicant person | Alfred E. Wunderlich |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Hélice sustentatrice Aéra |
| English title | Ascension propeller “Aéra” |
| Tech fields | propellers, sustentation, ascension, helicopter, hybrid |
| Filing date | 1913-01-16 |
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| Granted? | 1 |
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| Supplementary to patent | Patent BE-1912-250457 |
| Related to aircraft? | 1 |
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| Patent agent | A. Wunderlich & Cie, Ingénieurs-Conseils |
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| National tech categories | BE K |
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| Family year | 1912 |
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