Patent BE-1909-219377

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Patent BE-1909-219377 RdBdI

"Cette machine volante se compose de deux grandes ailes circulaires ou roues se mouvant sur un même axe vertical, mais en sense contraire."

That is, "This flying machine is composed of two large circular wings, or wheels, moving on one single vertical axis, but in opposite rotational directions".

(This may have more to do with ascension than with propulsion, and this may be some sort of precursor to the helicopter. These "wings", in fact, may be a grand form of propeller.)

Inventor location: Montguyon, France Patent agent location: Brussels

Year filed 1909
Year granted 1909
Office BE
Patent number
Inventors A. Beurrier
Inventor country FR
Applicant person A. Beurrier
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Ailes circulaires concentriques à mouvement contrariés
English title Concentric circular wings with contrary movements
Tech fields wings, propellers, hybrid, helicopter
Filing date
Full specification filed date
Application number
Grant date September 22, 1909
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent M. Benoît
Assigned to
National tech categories BE K
IPCs
CPCs
Family year 1909
First filing? No
Number of citations
Cited by
Application ID
INPADOC family ID
Number of text pages
Number of diagram pages
Number of figures
Number of claims