US3557735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moving weight ship stabilizer
Assignee: FLUME STABILIZATION SYSTEMS Inc
•
Filing: 1968-07-26
•
Granted: 1971-01-26
•
Expires: 1988-07-26
Abstract
Abstract A roll stabilization system for ships including a rolling cylindrical weight guided to roll athwartships in response to the rolling motion of the ship. Liquid means may be provided to dissipate kinetic energy from the rolling weight to assure proper phasing. Further means are provided to slow or dampen the movement of the weight near the extremities of travel.
Inventors
- 👤 Edward D Dreyfus
- 👤 Paul A Brunsell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:28
CPC Classifications
B; B63; B63B; B63B39/00; B63B39/02; B63B39/03
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
105 words
A passive moving weight roll stabilizer for ships comprising a freely rolling cylindrical member of sufficient mass to impart a significant stabilization moment or force to the ship, a guide track rigidly secured to a deck of the ship, said cylinder arranged on the guide track to roll athwartship in direct response to the rolling action of the ship, and means to slow or impede the lateral movement of the cylinder at least at a predetermined distance on either side of the ship''s centerline in order to maintain a proper stabilizing phase lag between the roll of the ship and the roll of the cylinder.
Claim 2
Dependent Claim
105 words
A passive moving weight roll stabilizer for ships comprising a freely rolling cylindrical member of sufficient mass to impart a significant stabilization moment or force to the ship, a guide track rigidly secured to a deck of the ship, said cylinder arranged on the guide track to roll athwartship in direct response to the rolling action of the ship, and means to slow or impede the lateral movement of the cylinder at least at a predetermined distance on either side of the ship''s centerline in order to maintain a proper stabilizing phase lag between the roll of the ship and the roll of the cylinder.
Claim 3
Dependent Claim
24 words
The stabilizer of claim 1 wherein the surface upon which the cylinder rolls near the outboard limits of travel is inclined upward and outboard.
Claim 4
Dependent Claim
17 words
The stabilizer of claim 1 wherein guide means are provided to maintain the cylindrical member movement athwartships.
Claim 5
Dependent Claim
21 words
The stabilizer of claim 1 wherein the cylindrical supporting surface extending in both directions from the ship''s center line is flat.
Claim 6
Dependent Claim
37 words
The stabilizer of claim 1 wherein said stabilizer includes a housing about the cylindrical member and said last mentioned means includes a body of liquid at least partially filling the housing and through which the cylinder rolls.
Claim 7
Dependent Claim
27 words
The stabilizer of claim 5 wherein the surface supporting the cylindrical member is inclined upward and outboard from points spaced on opposite sides of the ship''s centerline.
Claim 8
Dependent Claim
19 words
The stabilizer of claim 6 wherein impact shock absorbers are provided on the inside near the housing end walls.
Claim 9
Dependent Claim
107 words
A moving weight roll stabilizer for ships comprising a cylindrical member of sufficient mass to impart a significant stabilization moment or force to the ship, said cylinder arranged on the ship to roll athwartship in response to the rolling action of the ship, means to slow or impede the lateral movement of the cylinder at least at a predetermined distance on either side of the ship''s center line, and guide means to maintain the cylindrical member movement athwartships, wherein the guide means comprises the cylindrical Member having a part with a reduced diameter and a transverse guide rail mounted to the ship and cooperating with said part.
Claim 10
Dependent Claim
107 words
A moving weight roll stabilizer for ships comprising a cylindrical member of sufficient mass to impart a significant stabilization moment or force to the ship, said cylinder arranged on the ship to roll athwartship in response to the rolling action of the ship, means to slow or impede the lateral movement of the cylinder at least at a predetermined distance on either side of the ship''s center line, and guide means to maintain the cylindrical member movement athwartships, wherein the guide means comprises the cylindrical Member having a part with a reduced diameter and a transverse guide rail mounted to the ship and cooperating with said part.
Claim 11
Dependent Claim
83 words
A moving weight roll stabilizer for ships comprising a cylindrical member of sufficient mass to impart a significant stabilization moment or force to the ship, said cylinder arranged on the ship to roll athwartship in response to the rolling action of the ship, and means to slow or impede the lateral movement of the cylinder at least at a predetermined distance on either side of the ship''s center line, wherein the cylinder is hollow and its internal cavity is partially filled with liquid.
Claim 12
Dependent Claim
83 words
A moving weight roll stabilizer for ships comprising a cylindrical member of sufficient mass to impart a significant stabilization moment or force to the ship, said cylinder arranged on the ship to roll athwartship in response to the rolling action of the ship, and means to slow or impede the lateral movement of the cylinder at least at a predetermined distance on either side of the ship''s center line, wherein the cylinder is hollow and its internal cavity is partially filled with liquid.
Claim 13
Dependent Claim
28 words
The stabilizer of claim 9, wherein fins are arranged in said internal cavity connected to the cylindrical member so as to rotate through the liquid body during operation.
Claim 14
Dependent Claim
27 words
The stabilizer of claim 9, wherein the cylindrical member is provided with normally sealed ports to permit the addition of, or draining of, the liquid internal thereto.
References Cited (Backward Citations)
DE324970C
Cited
US3083671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |