Patent GB-1916-109672
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"109,672. Pybus, P. J., and Phoenix Dynamo Manufacturing Co. Sept. 30, 1916. Aerial machines without aerostat; captive balloons; propelling.-Observation machines of the helicopter type, or captive balloons having helicopter screws and propelling means enabling them to cruise within the limits allowed by the cable, are driven by direct-coupled highvoltage electro-motors supplied through the connecting-cable from a source of energy on the ground or on board ship. Fig. 1 shows a helicopter having two screws 6 direct-coupled to induction motors 2 driven in opposite directions and controlled by a handwheel 3 acting on resistances. A parachute 9 is provided for the observer should the motors stop. Propelling-screws may be provided."
- Tech class: CPC B64C27/20: Rotorcraft characterised by having shrouded rotors, e.g. flying platforms
- Inventor location: Pybus: Managing Director ; Phoenix Dynamo Manufacturing Company Limited: Electrical and Mechanical Engineers ; both of Thornbury Works, Bradford, County of York
Sources
- Original patent document and bibliography entry on espacenet
- Patent GB109672A on google patents
| Year filed | 1916 |
|---|---|
| Year granted | 1917 |
| Office | GB |
| Patent number | 109672 |
| Inventors | Percy John Pybus |
| Inventor country | GB |
| Inventor location | |
| Applicant person | Percy John Pybus |
| Applicant firm | Phoenix Dynamo |
| Applicant type | COMPANY+INDIV |
| Applicant is inventor? | 0 |
| Original title | Improvements in Aircraft for Observation and like purposes |
| English title | Improvements in Aircraft for Observation and like purposes |
| Tech fields | helicopter |
| Filing date | 1916-09-30 |
| Full specification filed date | 1917-03-30 |
| Application number | 1393916 |
| Grant date | 1917-09-27 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | 13939 |
| Patent agent | W. P. Thompson & Co. |
| Assigned to | |
| National tech categories | |
| IPCs | IPC B64C27/04 |
| CPCs | CPC B64C27/20, CPC B64C2700/6281 |
| Family year | 1916 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | 0 |
| Application ID | 21703489 |
| INPADOC family ID | 23459164 |
| Number of text pages | 2 |
| Number of diagram pages | 1 |
| Number of figures | 2 |
| Number of claims | 3 |
