Patent US5359574A successfully refreshed from Google Patents.
US5359574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically activated compliant wavy-wall
Assignee: NAVY UNITED STATE OF AMERICA, Secretary of
•
Filing: 1993-08-27
•
Granted: 1994-10-25
•
Expires: 2013-08-27
Abstract
Abstract Electromagnets are disposed in an elastomeric coating affixed to a body esed to a fluid. Controllable magnetic forces created by the electromagnets produce a wavy-wall configuration in the surface of the coating which may be static, dynamic, or static in part and dynamic in part, and which interfaces with the fluid to controllably alter noise, turbulence and drag characteristics of the body mechanically. Electrodes may be fixed on the surface of the coating to produce electric force fields for interacting with the magnetic fields and the wavy-wall, to produce magnetohydrodynamically generated Lorentz forces which controllably further alter noise, turbulence and drag characteristics of the body.
Inventors
- 👤 Richard H. Nadolink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:24
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/32; B63B1/34; B63G; B63G8/00; B63G8/28; B63G8/34; B63H; B63H1/00; B63H1/30; B63H1/36; B63H11/00; B63H11/02; B63H11/025; B63B2001/327; Y; Y02; Y02T; Y02T70/00; Y02T70/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
58 words
Apparatus for selectively affecting turbulence and noise characteristics of a body operating in a fluid medium, said apparatus comprising: a coating of compliant material covering said body at least in part; and a plurality of electromagnets embedded in said coating for generating magnetic forces operative to deform a surface of said coating into a wavy-wall having selected characteristics.
Claim 2
Dependent Claim
58 words
Apparatus for selectively affecting turbulence and noise characteristics of a body operating in a fluid medium, said apparatus comprising: a coating of compliant material covering said body at least in part; and a plurality of electromagnets embedded in said coating for generating magnetic forces operative to deform a surface of said coating into a wavy-wall having selected characteristics.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1, wherein said body is a marine vessel.
Claim 4
Dependent Claim
19 words
The apparatus of claim 1, wherein said wavy-wall and said magnetic forces controllably affect said turbulence and noise characteristics.
Claim 5
Dependent Claim
93 words
Apparatus for selectively affecting turbulence and noise characteristics of a body operating in a fluid medium, said apparatus comprising: a coating of compliant material covering said body at least in part; electromagnetic means for generating magnetic forces operative to deform a surface of said coating into a wavy-wall having selected characteristics; and means disposed at least in part on said coating for generating an electric field in said medium, wherein said deformation in said surface of said coating creates a Lorentz force effect to alter said turbulence and noise characteristics of said body.
Claim 6
Dependent Claim
93 words
Apparatus for selectively affecting turbulence and noise characteristics of a body operating in a fluid medium, said apparatus comprising: a coating of compliant material covering said body at least in part; electromagnetic means for generating magnetic forces operative to deform a surface of said coating into a wavy-wall having selected characteristics; and means disposed at least in part on said coating for generating an electric field in said medium, wherein said deformation in said surface of said coating creates a Lorentz force effect to alter said turbulence and noise characteristics of said body.
Claim 7
Dependent Claim
80 words
Apparatus for selectively affecting turbulence and noise characteristics of a body operating in a fluid medium, said apparatus comprising: a coating of compliant material covering said body at least in part; means disposed in said coating for electromagnetically generating magnetic forces that act to deform said coating into a wavy-wall configuration with selected characteristics; and means on said coating for generating electric fields that cooperate with said magnetic forces to magnetohydrodynamically alter said turbulence and noise characteristics of said body.
Claim 8
Dependent Claim
80 words
Apparatus for selectively affecting turbulence and noise characteristics of a body operating in a fluid medium, said apparatus comprising: a coating of compliant material covering said body at least in part; means disposed in said coating for electromagnetically generating magnetic forces that act to deform said coating into a wavy-wall configuration with selected characteristics; and means on said coating for generating electric fields that cooperate with said magnetic forces to magnetohydrodynamically alter said turbulence and noise characteristics of said body.
Claim 9
Dependent Claim
12 words
The apparatus of claim 5, wherein said body is a marine vessel.
Claim 10
Dependent Claim
13 words
The apparatus of claim 6, wherein said marine vessel is an underwater vessel.
Claim 11
Dependent Claim
18 words
The apparatus of claim 5, wherein said means for electromagnetically generating magnetic forces comprises a plurality of electromagnets.
Claim 12
Dependent Claim
36 words
The apparatus of claim 8, wherein said means for generating said electric fields comprise electrodes, and wherein said wavy-wall and said magnetic forces and said electric fields combine and selectively affect said turbulence and noise characteristics.
Claim 13
Dependent Claim
13 words
The apparatus of claim 9, wherein said electrodes are painted on said coating.
Claim 14
Dependent Claim
13 words
The apparatus of claim 9, wherein said electrodes are embedded in said coating.
References Cited (Backward Citations)
US4363991A
Cited
US4516747A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |