US3863458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for sinking and retrieving underwater heavy article
Assignee: Komatsu Ltd
•
Filing: 1972-12-21
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Granted: 1975-02-04
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Expires: 1992-12-21
Abstract
Abstract A device for sinking and retrieving an underwater heavy article which has a heavy article used under water, a take-up drum supported axially by the heavy article in connection to an electric motor controlled by the control command from a ship for taking up a guide rope when the motor is normally rotated and for feeding out the guide rope when the motor is reversely rotated, a float removably mounted to the guide rope, a hook attached to the suspension wire rope wound on the winch drum on the ship and replaceable with the float of the guide rope, and a mechanism for locking the hook to the heavy article when the hook is attached to the guide rope to be introduced to a predetermined position with respect to the heavy article. Thus, the heavy article may be simply and safely retrieved at any time even if underwater is turbulent or in any other troubled state.
Inventors
- 👤 Kunimitsu Ueno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:14
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/006; B; B63; B63C; B63C11/00; B63C11/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
A device for sinking and retrieving an underwater heavy article comprising a heavy article used under water, a take-up drum supported axially by said heavy article in connection to a prime mover controlled by the control command from a control desk on a ship for taking up a guide rope when the prime mover is normally rotated and for feeding out the guide rope when the prime mover is reversely rotated, a float removably mounted to the guide rope, a hook attached to the suspension wire rope wound on a winch drum on the ship and replaceable with the float of the guide rope, and a mechanism for locking the hook to the heavy article when the hook is attached to the guide rope to be introduced to a predetermined position with respect to the heavy article.
Claim 2
Independent Claim
137 words
A device for sinking and retrieving an underwater heavy article comprising a heavy article used under water, a take-up drum supported axially by said heavy article in connection to a prime mover controlled by the control command from a control desk on a ship for taking up a guide rope when the prime mover is normally rotated and for feeding out the guide rope when the prime mover is reversely rotated, a float removably mounted to the guide rope, a hook attached to the suspension wire rope wound on a winch drum on the ship and replaceable with the float of the guide rope, and a mechanism for locking the hook to the heavy article when the hook is attached to the guide rope to be introduced to a predetermined position with respect to the heavy article.
Claim 3
Dependent Claim
39 words
A device as set forth in claim 1, wherein said locking mechanism comprises a pair of cylinder means disposed laterally symmetrically, a pair of engaging blocks provided at the ends of said cylinder means and bent in semi-circular shape.
Claim 4
Dependent Claim
29 words
A device as set forth in claim 1, further comprising a limit switch mounted under the locking mechanism for energizing confirmation lamp on the control desk on the ship.
Claim 5
Dependent Claim
36 words
A device as set forth in claim 1, wherein further comprising an electromagnetic valve mounted to said underwater heavy article controlled by the command from the control desk on the ship for operating the locking mechanism.
Claim 6
Independent Claim
151 words
A device for sinking and retrieving an underwater heavy article comprising a heavy article used under water, a take-up drum supported reversely rotatably to said heavy article in connection to a prime mover controlled by the control command from a control desk on the ship for introducing a guide rope connected to said prime mover, a rope take-up float removably attached to the guide rope wound on the take-up drum, a second float for sinking and retrieving the heavy article in connection to a compressor board on the ship through a transfer valve having an inlet and outlet port provided at a predetermined position, a hook attached to the second float and replacable with the rope take-up float on the guide rope, and a mechanism for locking the hook to the heavy article when the hook mounted to the heavy article is introduced to a predetermined position of the heavy article.
Claim 7
Independent Claim
151 words
A device for sinking and retrieving an underwater heavy article comprising a heavy article used under water, a take-up drum supported reversely rotatably to said heavy article in connection to a prime mover controlled by the control command from a control desk on the ship for introducing a guide rope connected to said prime mover, a rope take-up float removably attached to the guide rope wound on the take-up drum, a second float for sinking and retrieving the heavy article in connection to a compressor board on the ship through a transfer valve having an inlet and outlet port provided at a predetermined position, a hook attached to the second float and replacable with the rope take-up float on the guide rope, and a mechanism for locking the hook to the heavy article when the hook mounted to the heavy article is introduced to a predetermined position of the heavy article.
References Cited (Backward Citations)
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Cited
US3034471A
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US3402687A
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US3516489A
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US3500648A
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US3485056A
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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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |