Patent CA-1921-213446
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A reversible propeller. It has two arms (blades) extending from the peripheriphy of its hub. The centers of the blades longitudinally are in the same plane as the hub -- that is, the propeller's pretty flat. On each side of the hub is a lever controlling one blade. Some control mechanism controls the levers. So the blades might rotate at different speeds or in different directions. (Source: the claims page)
From the description: the purpose and effect of reversing the direction of the blades is to change the direction of the propelled object.
Patent family descending from Patent US-1920-1348432
- Patent CA-1921-213446 (English title: Reversing propeller, Supplementary to patent: Patent US-1920-1348432, National tech categories: CA 244/120)
- Inventor location: US citizen residing at Carroll, Iowa
- Issued: 1921-09-20, Expired: 1938-09-20 per CIPO
- 1 sheet of diags, 6 pages text, 1 claim (stamped with a different number: 213445),
- attorney signed on diagrams page: Richard B. ... Cluvery? Elvery?
Sources
- Bibliographic info on this patent at CIPO
- Original patent document and bibliography entry on espacenet
- Patent CA213446 on google patents
- https://patents.google.com/patent/CA213446A
| Year filed | |
|---|---|
| Year granted | 1921 |
| Office | CA |
| Patent number | 213446 |
| Inventors | Arthur R. Lyons |
| Inventor country | |
| Inventor location | |
| Applicant person | Arthur R. Lyons |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Reversing propeller |
| English title | Reversing propeller |
| Tech fields | propeller |
| Filing date | |
| Full specification filed date | |
| Application number | |
| Grant date | 1921-09-20 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | Patent US-1920-1348432 |
| Related to aircraft? | |
| Serial number | |
| Patent agent | |
| Assigned to | |
| National tech categories | CA 244/120 |
| IPCs | |
| CPCs | |
| Family year | 1917 |
| First filing? | 0 |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | |
| Number of diagram pages | |
| Number of figures | |
| Number of claims |
