US3331444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fairing assembly
Assignee: Piasecki Aircraft Corp
•
Filing: 1966-12-28
•
Granted: 1967-07-18
•
Expires: 1986-12-28
Abstract
No abstract record available.
Inventors
- 👤 Charles V Toner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:11
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/04; B64C27/12; A; A01; A01B; A01B39/00; A01B39/08; B64C27/32; B64C27/46; B64C7/00; B64C27/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
214 words
A FAIRING ASSEMBLY FOR AN OVERHEAD ROTOR BLADE ASSEMBLY OF A ROTARY WING AIRCRAFT INCLUDING A ROTOR MAST AND A PLURALITY OF OUTWARDLY EXTENDING ROTOR BLADES OPERATIVELY CONNECTED TO SAID ROTOR MAST COMPRISING A SEGMENTED HOUSING ASSEMBLY, SAID HOUSING ASSEMBLY COMPRISING A PLURALITY OF RIGID COVER SEGMENTS DISPOSED BETWEEN SUCCESSIVE ROTOR BLADES INTERCONNECTED TO FORM AN INTEGRAL UNIT HAVING A CONTINUOUS SMOOTH EXTERIOR SURFACE AND A SUBSTANTIALLY ELLIPTICAL VERTICAL CROSS-SECTIONAL CONFIGURATION, EACH OF SAID RIGID COVER SEGMENTS INCLUDING A FRAME ASSEMBLY HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED, ARCUATE FRAME SECTIONS, VERTICAL SECTIONS INTERCONNECTING THE ENDS OF EACH ARCUATE SECTION AND HORIZONTAL ARCUATE SECTIONS INTERCONNECTING CIRCUMFERENTIALLY SPACED ENDS OF SAID ARCUATE FRAME SECTIONS, AND A COVER MEMBER DISPOSED ON THE CIRCUMFERENTIALLY SPACED ARCUATE FRAME SECTIONS, THE ADJACENT ENDS OF SUCCESSIVE SEGMENTS BEING RECESSED TO PROVIDE AN OPENING WHEN SAID SEGMENTS ARE ASSEMBLED FOR RECEIVING A ROTARY BLADE THERETHROUGH, THE CONNECTING SHANK PORTION OF EACH ROTOR BLADE HAVING A SUBRIGID COVER MEANS, SAID SHANK COVER MEANS HAVING A SUBSTANTIALLY ELLIPTICAL VERTICAL CROSS-SECTIONAL CONFIGURATION, A PLURALITY OF FLEXIBLE BOOT MEMBERS EACH INTERCONNECTING SAID HOUSING ASSEMBLY AND A SHANK COVER MEMBER TO ENCLOSE THE OPENING THEREBETWEEN AND PERMIT MOVEMENT OF THE ROTARY BLADE RELATIVE TO SAID MAST AND MEANS FOR SECURING SAID HOUSING ASSEMBLY TO SAID ROTOR MAST.
Claim 2
Dependent Claim
214 words
A FAIRING ASSEMBLY FOR AN OVERHEAD ROTOR BLADE ASSEMBLY OF A ROTARY WING AIRCRAFT INCLUDING A ROTOR MAST AND A PLURALITY OF OUTWARDLY EXTENDING ROTOR BLADES OPERATIVELY CONNECTED TO SAID ROTOR MAST COMPRISING A SEGMENTED HOUSING ASSEMBLY, SAID HOUSING ASSEMBLY COMPRISING A PLURALITY OF RIGID COVER SEGMENTS DISPOSED BETWEEN SUCCESSIVE ROTOR BLADES INTERCONNECTED TO FORM AN INTEGRAL UNIT HAVING A CONTINUOUS SMOOTH EXTERIOR SURFACE AND A SUBSTANTIALLY ELLIPTICAL VERTICAL CROSS-SECTIONAL CONFIGURATION, EACH OF SAID RIGID COVER SEGMENTS INCLUDING A FRAME ASSEMBLY HAVING A PLURALITY OF CIRCUMFERENTIALLY SPACED, ARCUATE FRAME SECTIONS, VERTICAL SECTIONS INTERCONNECTING THE ENDS OF EACH ARCUATE SECTION AND HORIZONTAL ARCUATE SECTIONS INTERCONNECTING CIRCUMFERENTIALLY SPACED ENDS OF SAID ARCUATE FRAME SECTIONS, AND A COVER MEMBER DISPOSED ON THE CIRCUMFERENTIALLY SPACED ARCUATE FRAME SECTIONS, THE ADJACENT ENDS OF SUCCESSIVE SEGMENTS BEING RECESSED TO PROVIDE AN OPENING WHEN SAID SEGMENTS ARE ASSEMBLED FOR RECEIVING A ROTARY BLADE THERETHROUGH, THE CONNECTING SHANK PORTION OF EACH ROTOR BLADE HAVING A SUBRIGID COVER MEANS, SAID SHANK COVER MEANS HAVING A SUBSTANTIALLY ELLIPTICAL VERTICAL CROSS-SECTIONAL CONFIGURATION, A PLURALITY OF FLEXIBLE BOOT MEMBERS EACH INTERCONNECTING SAID HOUSING ASSEMBLY AND A SHANK COVER MEMBER TO ENCLOSE THE OPENING THEREBETWEEN AND PERMIT MOVEMENT OF THE ROTARY BLADE RELATIVE TO SAID MAST AND MEANS FOR SECURING SAID HOUSING ASSEMBLY TO SAID ROTOR MAST.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |