Patent FR-1910-418774

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A conical metal cap for propellers

Inventor location: France (Seine)


  • {{esp|FR|418774A espacenet]

Year filed 1910
Year granted 1910
Office FR
Patent number 418774
Inventors Ambroise Goupy
Inventor country FR
Applicant person
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Perfectionnements aux appareils aériens augmentant le rendement de propulsion et diminuant la résistance à la pénétration
English title Improvements to aircraft increasing propulsive efficiency and reducing resistance to penetration
Tech fields propeller, aerodynamics
Filing date July 29, 1910
Full specification filed date
Application number 418774D
Grant date December 19, 1910
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent Armengaud jeune
Assigned to
National tech categories FR 6.4
IPCs IPC B64C11/14
CPCs CPC B64C11/14
Family year 1910
First filing? No
Cites these patents
Citations from after 1930
Application ID 19237702
INPADOC family ID 5311493
Number of text pages 2
Number of diagram pages 1
Number of figures 1
Number of claims