US3591022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cargo crane
Assignee: Ivanovich Evgeny Alexei Petrovich Milyakov
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Filing: 1969-04-23
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Granted: 1971-07-06
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Expires: 1989-04-23
Abstract
Abstract A cargo crane for transporting cargo from one object to another object under conditions of the mutual vibration of objects, particularly ships operating under rough sea conditions, in which cargo ropes, a horizontally mounted jib and a suspension define an imaginary isosceles truncated pyramid, with the ropes being so connected to the system following up the mutual vibration of objects as to provide equal tension of the ropes, thereby ensuring nonimpact and a precise placing of the cargo.
Inventors
- 👤 Anatoly Emelyanovich Polyakov
- 👤 Ivanovich Evgeny
- 👤 Alexei Petrovich Milyakov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:34
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/52; B66C13/00; B66C13/02; B66C2700/00; B66C2700/03
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A cargo crane for transporting cargo from one object to another object under conditions of the mutual vibration of objects, and more particularly ships operating under rough sea conditions, comprising a load beam defined by a boom; a load hoist; a system following up the mutual vibration of objects; a jib operably connected with the free end of the cargo beam; means for constantly holding said jib in a horizontal position; a cargo rope suspension coupled with said load hoist and the object being serviced via said followup system and including at least three cargo ropes so passing through said jib that said ropes together with the jib and said suspension define an imaginary isosceles truncated pyramid, and said cargo ropes being so connected to the system following up the mutual vibration of the objects as to provide an equal tension of said cargo ropes and distribution of the points at which said suspension is secured in one horizontal plane.
Claim 2
Dependent Claim
160 words
A cargo crane for transporting cargo from one object to another object under conditions of the mutual vibration of objects, and more particularly ships operating under rough sea conditions, comprising a load beam defined by a boom; a load hoist; a system following up the mutual vibration of objects; a jib operably connected with the free end of the cargo beam; means for constantly holding said jib in a horizontal position; a cargo rope suspension coupled with said load hoist and the object being serviced via said followup system and including at least three cargo ropes so passing through said jib that said ropes together with the jib and said suspension define an imaginary isosceles truncated pyramid, and said cargo ropes being so connected to the system following up the mutual vibration of the objects as to provide an equal tension of said cargo ropes and distribution of the points at which said suspension is secured in one horizontal plane.
Claim 3
Dependent Claim
49 words
The cargo crane according to claim 1, in which the jib is constantly held in a horizontal position by means of two power cylinders operably interconnected, one of said cylinders being hinged to the boom and the jib, and the other cylinder to the boom and the crane base.
Claim 4
Dependent Claim
16 words
The cargo crane according to claim 2, in which the jib is hinged to the boom.
Claim 5
Dependent Claim
56 words
The cargo crane according to claim 1, in which the system following up the mutual vibration of objects includes at least three pulley block arrangements having a common movable shaft and a common stationary shaft, said shafts mounting pulley blocks carrying the cargo ropes and a rope connecting the followup system with the object being serviced.
Claim 6
Dependent Claim
27 words
The cargo crane according to claim 4, in which the stationary shaft serves simultaneously as the axis of the hinge joint connecting the jib with the boom.
Claim 7
Dependent Claim
42 words
The cargo crane according to claim 1, in which the cargo ropes are passed onto cargo blocks mounted on the jib, with the planes of rotation of the cargo blocks being aligned with the bisectrix of the angles of the pyramid base.
Claim 8
Dependent Claim
23 words
The cargo crane according to claim 2, in which the axes of the power cylinders are disposed parallel with respect to each other.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |