Patent US3604386A successfully refreshed from Google Patents.
US3604386A
Expired / Lapsed
US
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Automatic installation for the transversal balancing of a ship
Assignee: FILOTECNICA SALMOIRAGHI SpA
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Filing: 1969-12-19
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Granted: 1971-09-14
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Expires: 1989-12-19
Abstract
Abstract In an automatic installation for balancing a ship by means of the so-called ''''balanced tanks'''' method, the actual rate of flow of the liquid being transferred from either tank to the other is measured through the pressure differential between the two tanks. The differential between the ''''ordered'''' rate of flow and the actual rate of flow is computed by a comparison circuit. The instantaneous value of the differential rate of flow is used for adjusting the rate of flow of the variable delivery pump which is inserted in a conduit connecting the two tanks serially.
Inventors
- 👤 Edmondo Turci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:43
CPC Classifications
B; B63; B63B; B63B39/00; B63B39/02; B63B39/03; G; G05; G05D; G05D1/00; G05D1/08; G05D1/0875
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
168 words
An automatic installation for transversally balancing a ship, of the kind comprising at least a couple of tanks situated on the same perpendicular to the longitudinal vertical plane of symmetry of the ship and at equal distances from said plane, said tanks containing a liquid which can be transferred from either tank to the other at an instantaneous rate of flow which is determined by a signal, called ordered rate of flow signal, which is a function of the angle of tilt, of the speed of tilt and the acceleration of tilt of the ship with respect to the balanced trim thereof, characterized in that it comprises means for measuring the actual rate of flow through said duct and converting it into a signal analog to the ordered rate of flow signal and comparing the signal thus obtained with said ordered rate of flow signal so as to obtain a differential signal whose instantaneous value determines the instantaneous actuated rate of flow as given by said pumping means.
Claim 2
Dependent Claim
168 words
An automatic installation for transversally balancing a ship, of the kind comprising at least a couple of tanks situated on the same perpendicular to the longitudinal vertical plane of symmetry of the ship and at equal distances from said plane, said tanks containing a liquid which can be transferred from either tank to the other at an instantaneous rate of flow which is determined by a signal, called ordered rate of flow signal, which is a function of the angle of tilt, of the speed of tilt and the acceleration of tilt of the ship with respect to the balanced trim thereof, characterized in that it comprises means for measuring the actual rate of flow through said duct and converting it into a signal analog to the ordered rate of flow signal and comparing the signal thus obtained with said ordered rate of flow signal so as to obtain a differential signal whose instantaneous value determines the instantaneous actuated rate of flow as given by said pumping means.
Claim 3
Dependent Claim
50 words
An automatic installation according to claim 1, characterized in that the function of transfer between said actual rate of flow and the signal which can be compared with said ordered rate of flow signal is the inverse of the function between said differential signal and said actual rate of flow.
Claim 4
Dependent Claim
30 words
An automatic installation according to claim 3, characterized in that the measurement of the actual rate of flow is obtained by differentiation of the pressure differential between the two tanks.
Claim 5
Dependent Claim
56 words
An automatic installation according to claim 3, characterized in that said measurement is taken by means of an electronic device comprising a differential amplifier and a differentiator connected to one another in a cascade connection, the inputs of said differential amplifier being fed with signals obtained by translating the pressures in each of said two tanks.
Claim 6
Dependent Claim
26 words
An automatic installation according to claim 4, characterized in that the output signal of said differentiator is applied as a modulating signal to an AC-fed modulator.
Claim 7
Dependent Claim
20 words
An automatic installation according to claim 5, characterized in that the modulated signal issuing from said modulator is power amplified.
Claim 8
Dependent Claim
50 words
An automatic installation according to claims 1 to 6, characterized in that the rate-of-flow signal is derived from the tilt angle, the tilting speed and the Tilt acceleration of the ship by mixing the signals issuing from a bank indicator, a gyroscope and an angular accelerometer installed on said ship.
References Cited (Backward Citations)
US3306247A
Cited
FR1470048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |