US3225458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter training device
Assignee: Bolkow GmbH
•
Filing: 1962-05-21
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Granted: 1965-12-28
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Glockl Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:01
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A HELICOPTER CONSTRUCTION COMPRISING, IN COMBINATION, A STATIONARY BASE, ROTARY SUPPORT MEANS ABOVE SAID BASE, A MECHANICAL SWIVEL LINKAGE BETWEEN SAID ROTARY SUPPORT MEANS AND SAID BASE AND PERMITTING TILTING OF SAID ROTARY SUPPORT MEANS RELATIVE TO SAID BASE ABOUT AT LEAST ONE HORIZONTAL AXIS, A HELICOPTER PLANE ABOVE SAID ROTARY SUPPORT MEANS, LINKAGE MEANS CONNECTED TO AND INTERPOSITIONED BETWEEN SAID HELICOPTER PLANE AND SAID ROTARY SUPPORT MEANS FOR PERMITTING ASCENT AND DESCENT OF SAID HELICOPTER PLANE RELATIVE TO SAID STATIONARY BASE, AND A PLATFORM ABOVE SAID MECHANICAL SWIVEL LINKAGE AND BELOW SAID PLANE, SAID PLANE HAVING A LANDING GEAR AND SAID PLATFORM EXTENDING IN THE RANGE OF MOVEMENT OF SAID LANDING GEAR DURING THE DESCENT OF SAID PLANE, SAID PLATFORM BEING RIGIDLY CONNECTED WITH SAID STATIONARY BASE BY MEANS OF LEG MEANS EXTENDING BETWEEN SAID BASE AND SAID PLATFORM.
Claim 2
Dependent Claim
140 words
A HELICOPTER CONSTRUCTION COMPRISING, IN COMBINATION, A STATIONARY BASE, ROTARY SUPPORT MEANS ABOVE SAID BASE, A MECHANICAL SWIVEL LINKAGE BETWEEN SAID ROTARY SUPPORT MEANS AND SAID BASE AND PERMITTING TILTING OF SAID ROTARY SUPPORT MEANS RELATIVE TO SAID BASE ABOUT AT LEAST ONE HORIZONTAL AXIS, A HELICOPTER PLANE ABOVE SAID ROTARY SUPPORT MEANS, LINKAGE MEANS CONNECTED TO AND INTERPOSITIONED BETWEEN SAID HELICOPTER PLANE AND SAID ROTARY SUPPORT MEANS FOR PERMITTING ASCENT AND DESCENT OF SAID HELICOPTER PLANE RELATIVE TO SAID STATIONARY BASE, AND A PLATFORM ABOVE SAID MECHANICAL SWIVEL LINKAGE AND BELOW SAID PLANE, SAID PLANE HAVING A LANDING GEAR AND SAID PLATFORM EXTENDING IN THE RANGE OF MOVEMENT OF SAID LANDING GEAR DURING THE DESCENT OF SAID PLANE, SAID PLATFORM BEING RIGIDLY CONNECTED WITH SAID STATIONARY BASE BY MEANS OF LEG MEANS EXTENDING BETWEEN SAID BASE AND SAID PLATFORM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |