Patent US-1911-989786
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This was a self-correcting plane to stabilize an airplane, with additional rocker; with keel, rudder, etc; conical surfaces, concave downward (i.e. half-cones opening down); Experience has shown that it is not difficult to lift a comparatively large weight by the reaction between the supporting surface and the air, but with all the types of machines which have previously been devised, it is a very difficult matter to maintain equilibrium, requiring the constant attention of the operator
Inventor location (imputed by HistPat): Brooklyn, NY, Kings county, NY (FIPSloc=36047)
Sources
- Patent 989786 document and bibliographic info on espacenet
- Patent 989786 at google patents
Year filed | 1910 |
---|---|
Year granted | 1911 |
Office | US |
Patent number | 989786 |
Inventors | Ulysses Grant Lee, William Austin Darrah |
Inventor country | |
Applicant person | Ulysses Grant Lee |
Applicant firm | |
Applicant type | INDIV |
Applicant is inventor? | 1 |
Original title | Flying-machine |
English title | Flying machine |
Tech fields | airplane, frame, stability, rudder |
Filing date | 1910-02-15 |
Full specification filed date | |
Application number | 1910544143 |
Grant date | 1911-04-18 |
Granted? | 1 |
Publication date | |
Supplementary to patent | |
Related to aircraft? | 1 |
Serial number | 544143 |
Patent agent | |
Assigned to | |
National tech categories | USPC 244/153R |
IPCs | IPC B64C3/14 |
CPCs | CPC Y10S244/901 |
Family year | 1910 |
First filing? | 1 |
Cites these patents | |
Citations from after 1930 | |
Application ID | 47423730 |
INPADOC family ID | |
Number of text pages | |
Number of diagram pages | |
Number of figures | |
Number of claims |