Patent FR-1911-436934

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An epsacenet record exists but lacks title or scan. I think we can infer the title and category from the addition FR-1917-436934.21631, which also gives us directly the date of the original and some information about it:

La disposition de laboratoire d'essais pour modèles d'aéroplanes ou d'hélices décrite dans le brevet № 436.934 est caractérisée en principe par ce fait que la chambre, où sont placés les modèles à essayer, est reliée par un diffuseur conique allongé à un ventilateur de diamètre de l'ouverture de la chambre, ce ventilateur pouvant être suivi lui même d'un second diffuseur. Cette disposition permet de réduire très notablement la puissance nécessaire pour faire fonctionner le ventilateur.

The technology here described reflects (more or less) the actual designs of two wind tunnels built by Eiffel, the first at the Champs-de-Mars in 1909, the second at Auteuil. He was actually successful in reducing the power required to operate the wind tunnel at his second plant; the design of both tunnels was hailed as setting a new standard of precision in aerodynamic experiments.[1]

References

  1. Dijana Damljanović, "Gustave Eiffel and the Wind: A Pioneer in Experimental Aerodynamics", Scientific Technical Review (2012), Vol. 62, No. 3–4, pp. 3–13.

Patent family descending from Patent FR-1911-436934


Year filed 1911
Year granted
Office FR
Patent number 436934
Inventors Gustave Eiffel
Inventor country FR
Applicant person
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Disposition d'un laboratoire d'essais pour modèles d'aéroplanes ou hélices
English title Laboratory for trials of model airplanes and propellers
Tech fields aerodynamics, airplane, propeller, wind tunnel
Filing date 1911-11-28
Full specification filed date
Application number
Grant date
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent
Assigned to
National tech categories FR 12.3
IPCs IPC G01M9/00
CPCs CPC G01M9/00
Family year 1911
First filing? 1
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages
Number of diagram pages
Number of figures
Number of claims