US5031446A
Expired / Lapsed
US
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Water leakage position estimating system
Assignee: Toshiba Corp
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Filing: 1989-03-20
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Granted: 1991-07-16
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Expires: 2009-03-20
Abstract
Abstract A system for estimating water leakage position in a water supply system consisting of a plurality of water feed/distribution devices. The system includes a memory unit for storing given constants of the plurality of devices at a monitoring position, a monitoring unit for monitoring vibrating frequency of the plurality of devices, and an estimating unit for estimating water leakage position based on the stored given constants of the plurality of devices and the monitored vibrating frequency of the plurality of devices.
Inventors
- 👤 Susumu Saito
- 👤 Syozo Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:52
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/24; G01M3/243
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A system for estimating water leakage position in a water supply system consisting of a plurality of water feed/distribution devices comprising: memory means for storing given constants of the plurality of water feed/distribution devices; monitoring means for detecting at a position in the water supply system distanced from the water leakage position a vibrating frequency of pipe vibration initiated by water leakage at the water leakage position; and estimating means for estimating the water leakage position based on the stored given constants of the plurality of water feed/distribution devices and the detected vibrating frequency.
Claim 2
Independent Claim
94 words
A system for estimating water leakage position in a water supply system consisting of a plurality of water feed/distribution devices comprising: memory means for storing given constants of the plurality of water feed/distribution devices; monitoring means for detecting at a position in the water supply system distanced from the water leakage position a vibrating frequency of pipe vibration initiated by water leakage at the water leakage position; and estimating means for estimating the water leakage position based on the stored given constants of the plurality of water feed/distribution devices and the detected vibrating frequency.
Claim 3
Dependent Claim
25 words
The system of claim 1 wherein the estimating means includes means for calculating the distance between the monitoring means position and the water leakage position.
Claim 4
Dependent Claim
43 words
The system of claim 1 wherein the estimating means includes means for determining the distance between the water leakage position in the water feed/distribution device in which the water leakage occurs and the adjoining water feed distribution device located towards the monitoring means.
Claim 5
Independent Claim
87 words
A method of estimating water leakage position in a water supply system consisting of a plurality of water feed/distribution devices comprising the steps of: storing given constants of the plurality of water feed/distribution devices; detecting at a position in the water supply system distanced from the water leakage position a vibrating frequency of pipe vibration initiated by water leakage at the water leakage position; and estimating water leakage position based on the stored given constants of the plurality of water feed/distribution devices and the detected vibrating frequency.
Claim 6
Independent Claim
87 words
A method of estimating water leakage position in a water supply system consisting of a plurality of water feed/distribution devices comprising the steps of: storing given constants of the plurality of water feed/distribution devices; detecting at a position in the water supply system distanced from the water leakage position a vibrating frequency of pipe vibration initiated by water leakage at the water leakage position; and estimating water leakage position based on the stored given constants of the plurality of water feed/distribution devices and the detected vibrating frequency.
Claim 7
Dependent Claim
26 words
The method of claim 4 wherein the step of estimating includes the step of calculating the distance between the detecting position and a water leakage position.
Claim 8
Dependent Claim
44 words
The method of claim 5 wherein the step of estimating includes the step of determining the distance between the water leakage position in the water feed/distribution device in which the water leakage occurs and the adjoining water feed/distribution device located towards the detecting position.
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) | 1994-07-15 | 1995-01-14 | 1995-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-15 | 1999-01-14 | 1999-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-15 | 2003-01-14 | 2003-07-16 | $7700.00 | Window Closed / Lapsed |