US4656509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water leakage monitoring system
Assignee: Mitsubishi Electric Corp
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Filing: 1984-08-20
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Granted: 1987-04-07
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Expires: 2004-08-20
Abstract
Abstract A water leakage monitoring system has a carriage remotely controlled with a driving control signal to intermittently travel along an inspection rail, a plurality of discrete monitored members disposed adjacent to the inspection rail, an industrial color television camera hung from the carriage through an attitude adjusting mechanism so as to correctly oppose and monitor water leakage through each of the monitored members through the operation of the attitude adjusting mechanism in response to an attitude control signal, and a coating composition applied to the surface of each of the monitored members which changes in color when it is wet with water leaked through the associated monitored member.
Inventors
- 👤 Isamu Matsuyama
- 👤 Hiroshi Sugimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:42
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/042; G01M3/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
A water leakage monitoring system, comprising: a plurality of discrete monitored members located along and adjacent to at least one side of a longitudinally extending inspection route, a carriage, means for remotely controlling said carriage with a driving control signal to intermittently travel along said inspection route adjacent to each monitored member, an attitude adjusting mechanism disposed on said carriage, a color television camera on said attitude adjusting mechanism, means for controlling said attitude adjusting mechanism with an attitude control signal to change an attitude of said television camera relative to each of said monitored members so as to oppose each monitored member when said carriage is adjacent thereto, so as to successively monitor water leakage through each of said monitored members when said television camera is opposed thereto, and a coating composition applied to an exposed part of the surface of each of said monitored members, said coating composition being reactive with water leaked through the associated monitored member to change in color.
Claim 2
Dependent Claim
164 words
A water leakage monitoring system, comprising: a plurality of discrete monitored members located along and adjacent to at least one side of a longitudinally extending inspection route, a carriage, means for remotely controlling said carriage with a driving control signal to intermittently travel along said inspection route adjacent to each monitored member, an attitude adjusting mechanism disposed on said carriage, a color television camera on said attitude adjusting mechanism, means for controlling said attitude adjusting mechanism with an attitude control signal to change an attitude of said television camera relative to each of said monitored members so as to oppose each monitored member when said carriage is adjacent thereto, so as to successively monitor water leakage through each of said monitored members when said television camera is opposed thereto, and a coating composition applied to an exposed part of the surface of each of said monitored members, said coating composition being reactive with water leaked through the associated monitored member to change in color.
Claim 3
Dependent Claim
21 words
A water leakage monitoring system as claimed in claim 1, wherein said color television camera is an industrial color television camera.
Claim 4
Dependent Claim
31 words
A water leakage monitoring system as claimed in claim 1, wherein each of said plurality of monitoring members is connected in a primary cooling piping system for a nuclear reactor containment.
Claim 5
Dependent Claim
31 words
A water leakage monitoring system as claimed in claim 2, wherein each of said plurality of monitoring members is connected in a primary cooling piping system for a nuclear reactor containment.
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) | 1990-04-06 | 1990-10-06 | 1991-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-06 | 1994-10-06 | 1995-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-06 | 1998-10-06 | 1999-04-07 | $7700.00 | Window Closed / Lapsed |