US3081884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crane with anti-sway mechanism
Assignee: Manning Maxwell and Moore Inc
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Filing: 1961-06-09
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Granted: 1963-03-19
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Expires: 1981-06-09
Abstract
No abstract record available.
Inventors
- 👤 John E Minty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:18
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/04; B66C13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN A GANTRY CRANE HAVING END FRAMES CONNECTED AT THE TOP BY A BRIDGE, A TROLLEY MOVABLE ALONG THE BRIDGE, A PAIR OF SPACED PARALLEL ROPE DRUMS ON SAID TROLLEY, MEANS TO DRIVE SAID DRUMS IN OPPOSITE DIRECTIONS, A FOUR-SIDED LIFTING FRAME, A PAIR OF SPACED SHEAVES ON EACH SIDE OF SAID LIFTING FRAME, MEANS DIRECTLY INTERCONNECTING THE SHEAVES OF EACH PAIR TO PREVENT ROTATION OF THE SHEAVES IN THE SAME DIRECTION, FOUR ROPES CONNECTED TO EACH SAID DRUM AND ANCHORED TO SAID TROLLEY AT A POINT REMOTE FROM THE DRUM CONNECTION, AND EACH SAID
Claim 2
Dependent Claim
95 words
IN A GANTRY CRANE HAVING END FRAMES CONNECTED AT THE TOP BY A BRIDGE, A TROLLEY MOVABLE ALONG THE BRIDGE, A PAIR OF SPACED PARALLEL ROPE DRUMS ON SAID TROLLEY, MEANS TO DRIVE SAID DRUMS IN OPPOSITE DIRECTIONS, A FOUR-SIDED LIFTING FRAME, A PAIR OF SPACED SHEAVES ON EACH SIDE OF SAID LIFTING FRAME, MEANS DIRECTLY INTERCONNECTING THE SHEAVES OF EACH PAIR TO PREVENT ROTATION OF THE SHEAVES IN THE SAME DIRECTION, FOUR ROPES CONNECTED TO EACH SAID DRUM AND ANCHORED TO SAID TROLLEY AT A POINT REMOTE FROM THE DRUM CONNECTION, AND EACH SAID
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |