US4820422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for countering scale formation in fluid conduits
Assignee: Envirecon Services Ltd
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Filing: 1988-05-04
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Granted: 1989-04-11
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Expires: 2008-05-04
Abstract
Abstract An apparatus for countering scale formation in a fluid flow system comprises a casing adapted for connection into the system and a plurality of substantially spherical metallic members loosely retained within the casing. Preferably, the spherical members comprise an alloy of copper, zinc, nickel and tin.
Inventors
- 👤 Robert J. Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:46
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/48; C02F5/00; C02F5/08; F; F16; F16L; F16L55/00; F16L55/24; F28; F28F; F28F19/00; F28G; F28G1/00; F28G1/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
167 words
A method for countering scale formation in a fluid flow system, said method comprising the steps of: connecting into the system a housing having an inlet and an outlet, the housing having a flow cross-sectional area which is substantially greater than that of the inlet and outlet and containing a plurality of substantially spherical shaped members loosely retained therein, said substantially spherical shaped members being formed of an alloy which comprises at least cooper and nickel; forcing a fluid through said housing, the orientation of the housing and the direction of fluid flow being such that the fluid flows upwardly through the housing; rubbing the substantially spherical shaped members together in a random manner in response to said forcing, said substantially spherical shaped members tending to rise upwardly due to fluid pressure and to fall downwardly under gravity to thereby rub together in a random manner; and preventing formation of scale in said fluid flow system, said preventing being in part responsive to at least said rubbing.
Claim 2
Independent Claim
167 words
A method for countering scale formation in a fluid flow system, said method comprising the steps of: connecting into the system a housing having an inlet and an outlet, the housing having a flow cross-sectional area which is substantially greater than that of the inlet and outlet and containing a plurality of substantially spherical shaped members loosely retained therein, said substantially spherical shaped members being formed of an alloy which comprises at least cooper and nickel; forcing a fluid through said housing, the orientation of the housing and the direction of fluid flow being such that the fluid flows upwardly through the housing; rubbing the substantially spherical shaped members together in a random manner in response to said forcing, said substantially spherical shaped members tending to rise upwardly due to fluid pressure and to fall downwardly under gravity to thereby rub together in a random manner; and preventing formation of scale in said fluid flow system, said preventing being in part responsive to at least said rubbing.
Claim 3
Dependent Claim
30 words
The method according to claim 1, further compising the step of using an alloy of at least two of copper, zinc, nickel and tin for the substantially spherical shaped members.
Claim 4
Dependent Claim
39 words
The method according to claim 1, further comprising the steps of retaining the substantially spherical shaped members loosely within the housing between a pair of perforated plates and disposing each plate inwardly of a respective end of the housing.
Claim 5
Dependent Claim
36 words
The method according to claim 3, further comprising the step of permitting removal and replacement of the substantially spherical shaped members by at least one of the plates being hinged to the interior of the housing.
Claim 6
Dependent Claim
42 words
The method according to claim 1, further comprising the steps of: rubbing some of the substantially spherical shaped members against an interior portion of the housing; and aiding preventing formation of scale by said rubbing against the interior portion of the housing.
Claim 7
Dependent Claim
35 words
The method according to claim 1, further comprising the step of avoiding coating of said substantially spherical shaped members by at least one of oxides and calcareous deposits in response to at least said rubbing.
Claim 8
Dependent Claim
36 words
The method according to claim 1, further comprising the step of using solid members for each of said substantially spherical shaped members whereby said fluid only contacts an outer surface of said substantially spherical shaped members.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |