Patent US3221897A successfully refreshed from Google Patents.
US3221897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Load-lifting apparatus
Assignee: Individual
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Filing: 1962-07-10
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Granted: 1965-12-07
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Expires: 1982-07-10
Abstract
No abstract record available.
Inventors
- 👤 Chester R Matheson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:38
CPC Classifications
B; B64; B64B; B64B1/00; B64B1/40; B66; B66C; B66C21/00; B66C2700/00; B66C2700/01; B66C2700/011
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A LOAD-LIFTING APPARATUS COMPRISING A CABLE, MEANS CONNECTING THE ENDS OF THE CABLE TO THE GROUND AT SPACEDAPART POINTS, A LIGHTER-THAN-AIR CRAFT SECURED TO SAID MAIN CABLE AND LIFTING AT LEAST A PORTION OF IT OFF THE GROUND, A CARRIAGE MOVABLY MOUNTED ON THE CABLE, A LIFTING CABLE PASSING OVER A PULLEY CARRIED BY THE CARRIAGE, ONE END OF SAID LIFTING DEVICE BEING ADAPTED TO BE CONNECTED TO A LOAD, POWER MEANS CONNECTED TO THE OPPOSITE END OF SAID LIFTING CABLE FOR LIFTING THE LOAD TOWARDS THE CARRIAGE, AND POWER MEANS FOR MOVING THE CARRIAGE ALONG THE MAIN CABLE, SAID CRAFT AT LEAST PARTIALLY SUPPORTING THE LOAD AS THE CARRIAGE MOVES ALONG THE MAIN CABLE.
Claim 2
Dependent Claim
115 words
A LOAD-LIFTING APPARATUS COMPRISING A CABLE, MEANS CONNECTING THE ENDS OF THE CABLE TO THE GROUND AT SPACEDAPART POINTS, A LIGHTER-THAN-AIR CRAFT SECURED TO SAID MAIN CABLE AND LIFTING AT LEAST A PORTION OF IT OFF THE GROUND, A CARRIAGE MOVABLY MOUNTED ON THE CABLE, A LIFTING CABLE PASSING OVER A PULLEY CARRIED BY THE CARRIAGE, ONE END OF SAID LIFTING DEVICE BEING ADAPTED TO BE CONNECTED TO A LOAD, POWER MEANS CONNECTED TO THE OPPOSITE END OF SAID LIFTING CABLE FOR LIFTING THE LOAD TOWARDS THE CARRIAGE, AND POWER MEANS FOR MOVING THE CARRIAGE ALONG THE MAIN CABLE, SAID CRAFT AT LEAST PARTIALLY SUPPORTING THE LOAD AS THE CARRIAGE MOVES ALONG THE MAIN CABLE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |