Patent US-1922-1406600

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Propeller-hub construction: Addresses issue of propeller strain from torque at hub by adding reinforcement with wood-grain at a right angle to the grain of the propeller.

Sources list the Applicant as "OURTISS AEROPLANE" but from the document itself, it's Curtiss Aeroplane Co.[1][2][3]

  • Inventor location (imputed from HistPat): New York county, NY (FIPSloc=36061)


Year filed 1916
Year granted 1922
Office US
Patent number 1406600
Inventors Albert Francis Zahm
Inventor country
Applicant person
Applicant firm
Applicant type
Applicant is inventor? Yes
Original title Propeller-hub construction
English title Propeller-hub construction
Tech fields propeller, propulsion, safety
Filing date October 13, 1916
Full specification filed date
Application number 12541116
Grant date February 14, 1922
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number 12541116
Patent agent
Assigned to Curtiss Aeroplane & Motor Corp
National tech categories
IPCs [[IPC B64C11/04]]
CPCs CPC B64C11/04
Family year 1916
First filing? Yes
Cites these patents
Citations from after 1930
Application ID 47911671
INPADOC family ID 43148480
Number of text pages 2
Number of diagram pages 1
Number of figures 5
Number of claims 7