US3876331A
Removable propeller blade assembly
Abstract
An exhaust-through hub is provided with mounting brackets for holding a plurality of propeller blade segments each having a blade and a mounting base. The segments are held in the hub by a releasable retainer which can be secured and removed for replacement of the propeller blades without the use of threaded couplings.
Term
Term ended
Expired 8 April 1992, 34.5 years ago.
- Priority and filed
- Granted
- Expired
- Today
2 sheets
Sheet 1 Sheet 2
Every citation, both ways
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3 priority claims, no other members on record
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 30867272 | United States of America | A | |
| 308672 | – | – | – |
| US19720308672 | – | – | – |
1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| AssignmentAS | AS |
Numbers
- Publication, DOCDB
- 3876331
- Publication, EPODOC
- US3876331
- Application
- 308672
- Application, DOCDB
- 30867272
- Application, EPODOC
- US19720308672
Titles
- English
- REMOVABLE PROPELLER BLADE ASSEMBLY
Classification
- CPC, 2
- B63H1/20
- B63H20/245
- IPC, 1
- B63H1 20