Patent US-1912-1015656
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Helicopter: two propellers rotating at the same speed, in opposite directions. Navigation is accomplished by tilting the shaft one way or another. The vessel is caused to hover or to descend by decreasing the speed of the propellers.
- Inventor location (imputed by HistPat): Thurman, Mahaska county, IA (FIPSloc=19123)
Sources
- Patent 1015656 document and bibliographic info on espacenet
- Patent 1015656 at google patents
Year filed | 1911 |
---|---|
Year granted | 1912 |
Office | US |
Patent number | 1015656 |
Inventors | Albert Valentine |
Inventor country | US |
Applicant person | Albert Valentine |
Applicant firm | |
Applicant type | INDIV |
Applicant is inventor? | 1 |
Original title | Flying-Machine |
English title | Flying machine |
Tech fields | helicopter, propeller, navigation, car |
Filing date | 1911-04-13 |
Full specification filed date | |
Application number | 1911620773 |
Grant date | 1912-01-23 |
Granted? | |
Publication date | |
Supplementary to patent | |
Related to aircraft? | Yes |
Serial number | 620773 |
Patent agent | |
Assigned to | |
National tech categories | USPC 244/17.25 |
IPCs | |
CPCs | CPC B64C27/12, CPC Y10S426/805 |
Family year | 1911 |
First filing? | |
Cites these patents | |
Citations from after 1930 | |
Application ID | 47498536 |
INPADOC family ID | 43961323 |
Number of text pages | |
Number of diagram pages | |
Number of figures | |
Number of claims |