Patent US3121499A successfully refreshed from Google Patents.
US3121499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aircraft propeller handling unit
Assignee: Curtiss Wright Corp
•
Filing: 1960-10-07
•
Granted: 1964-02-18
•
Expires: 1980-10-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Floyd La Barre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:00
CPC Classifications
B; B66; B66F; B66F11/00; B66F11/04; B64; B64F; B64F5/00; B64F5/50; B66C; B66C23/00; B66C23/18; B66C23/36; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357; B66C2700/0364
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROPELLER HANDLING UNIT COMPRISING A CONVEYANCE, A MAST PIVOTALLY MOUNTED ON THE CONVEYANCE FOR MOVEMENT BETWEEN A SUBSTANTIALLY HORIZONAL AND A SUBSTANTIALLY VERTICAL POSITION, SUPPORT MEANS FOR TWO PROPELLERS, SAID SUPPORT MEANS BEING SLIDABLE ON THE MAST, MEANS FOR SECURING THE SUPPORT MEANS AGAINST MOTION ALONG THE MAST, MEANS FOR ACTUATING THE SUPPORT MEANS TO THEREBY RAISE THE MAST FROM SAID SUBSTANTIALLY HORIZONTAL TO THE SUBSTANTIALLY VERTICAL POSITION WHEN SAID SUPPORT MEANS IS SECURED AGAINST MOTION ALONG THE MAST, A BOOM ON THE MAST, AND CARRYING MEANS ON THE MAST FOR MOVING A PROPELLER TOWARD OR AWAY FROM THE SUPPORT MEANS, SAID SUPPORT MEANS AND CARRYING MEANS BEING RELATIVELY MOVABLE WHEREBY ONE OR THE OTHER OF THE PROPELLERS ON THE SUPPORT MEANS MAY BE ALIGNED WITH THE CARRYING MEANS.
Claim 2
Dependent Claim
130 words
A PROPELLER HANDLING UNIT COMPRISING A CONVEYANCE, A MAST PIVOTALLY MOUNTED ON THE CONVEYANCE FOR MOVEMENT BETWEEN A SUBSTANTIALLY HORIZONAL AND A SUBSTANTIALLY VERTICAL POSITION, SUPPORT MEANS FOR TWO PROPELLERS, SAID SUPPORT MEANS BEING SLIDABLE ON THE MAST, MEANS FOR SECURING THE SUPPORT MEANS AGAINST MOTION ALONG THE MAST, MEANS FOR ACTUATING THE SUPPORT MEANS TO THEREBY RAISE THE MAST FROM SAID SUBSTANTIALLY HORIZONTAL TO THE SUBSTANTIALLY VERTICAL POSITION WHEN SAID SUPPORT MEANS IS SECURED AGAINST MOTION ALONG THE MAST, A BOOM ON THE MAST, AND CARRYING MEANS ON THE MAST FOR MOVING A PROPELLER TOWARD OR AWAY FROM THE SUPPORT MEANS, SAID SUPPORT MEANS AND CARRYING MEANS BEING RELATIVELY MOVABLE WHEREBY ONE OR THE OTHER OF THE PROPELLERS ON THE SUPPORT MEANS MAY BE ALIGNED WITH THE CARRYING MEANS.
References Cited (Backward Citations)
DE739232C
Cited
US2375104A
Cited
US2409468A
Cited
US2413909A
Cited
US2468884A
Cited
US2536614A
Cited
US2620930A
Cited
US2786581A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |