Patent US-1902-702120

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Multiple sets of blades in back & in rear.

In the operation of the invention it will be seen that the rotation of the driving-shaft B4 produces a simultaneous oscillation of the wings B and blades F and an oscillation in the opposite direction of the lower wings D and the rotation of the wings E, thus providing the simultaneous driving action for three separate devices reproducing, respectively, the propelling movement of a bird, a fish, and an insect, such as a bee.


Inventor location (imputed by HistPat): Pittsburg, Allegheny county, PA (FIPSloc=42003)

Year filed 1901
Year granted 1902
Office US
Patent number 702120
Inventors Harvey B. Van Voorhis
Inventor country US
Applicant person
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Air-ship
English title Air-ship
Tech fields LTA, balloon, flapping, propulsion, ornithopter, design, airfoil
Filing date December 11, 1901
Full specification filed date
Application number 1901085488
Grant date June 10, 1902
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number 85488
Patent agent E. B. Stocking
Assigned to
National tech categories USPC 244/28
CPCs CPC B64B1/00
Family year
First filing? Yes
Number of citations
Cited by
Application ID 46760916
INPADOC family ID 43644564
Number of text pages 3
Number of diagram pages 2
Number of figures 3
Number of claims 13