FR553834A - Multiple-helix - Google Patents
Multiple-helixInfo
- Publication number
- FR553834A FR553834A FR553834DA FR553834A FR 553834 A FR553834 A FR 553834A FR 553834D A FR553834D A FR 553834DA FR 553834 A FR553834 A FR 553834A
- Authority
- FR
- France
- Prior art keywords
- helix
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
- B64C11/48—Units of two or more coaxial propellers
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR553834T | 1922-06-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR553834A true FR553834A (en) | 1923-05-31 |
Family
ID=8938479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR553834D Expired FR553834A (en) | 1922-06-15 | 1922-06-15 | Multiple-helix |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR553834A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4118144A (en) * | 1976-04-16 | 1978-10-03 | Kelley Lawrence L | Support means for a windmill |
-
1922
- 1922-06-15 FR FR553834D patent/FR553834A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4118144A (en) * | 1976-04-16 | 1978-10-03 | Kelley Lawrence L | Support means for a windmill |
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