Patent US-1922-1419061
Jump to navigation
Jump to search
″Kraft asserts that wooden propellers are more vulnerable to the elements and hazardous if they break; the rubber propeller solves these problems. By the way, he mentions, rubber propellers are cheaper and easier to make.
The rubber propeller is molded onto a framework of metal fibers, possibly twisted or braided to ensure a good connection.
Inventor Location: Akron ("Rubber City"), Ohio
Sources
- Patent 1419061 document and bibliographic info on espacenet
- Patent 1419061 at google patents
| Year filed | 1917 |
|---|---|
| Year granted | 1922 |
| Office | US |
| Patent number | 1419061 |
| Inventors | Herman T. Kraft |
| Inventor country | US |
| Applicant person | |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Reinforced rubber propeller |
| English title | Reinforced rubber propeller |
| Tech fields | propeller, propulsion, rubber |
| Filing date | 1917-06-29 |
| Full specification filed date | |
| Application number | 17772117 |
| Grant date | 1922-06-06 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | 177721 |
| Patent agent | |
| Assigned to | Goodyear Tire and Rubber Company |
| National tech categories | USPC 416/230 |
| IPCs | IPC B64C 11/00, IPC B64C11/20 |
| CPCs | CPC B64C11/20 |
| Family year | 1917 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | 48417753 |
| INPADOC family ID | 43485708 |
| Number of text pages | 3 |
| Number of diagram pages | 1 |
| Number of figures | 8 |
| Number of claims | 10 |
