US4579640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic water treater
Assignee: 306530 ALBERTA Ltd #908 639-14 AVENUE SW CALGARY ALBERTA CANADA A CORP OF ALBERTA
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Filing: 1985-08-05
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Granted: 1986-04-01
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Expires: 2005-08-05
Abstract
Abstract An improved electrostatic water treatment apparatus is described which can operate for long periods without failure in very harsh environments, such as extreme and rapid temperature variations. It includes an elongated, cylindrical electrode having end closure cap members. At least one of these end caps has cylindrical side walls with an inner portion thereof telescoping within the cylindrical electrode and an outer shoulder portion extending axially outwardly beyond the end of the electrode. A continuous coating of silicone adhesive is provided over the exterior of the electrode and the outwardly extending shoulder portion of the end cap. A thin, impervious insulating sleeve then overlies the silicone adhesive coating, covering the exterior of the electrode and the outwardly extending shoulder portion of the end cap. Ring clamp means are provided surrounding the outwardly extending shoulder portion of the end cap and this ring clamp securely clamps the insulating sleeve and silicone adhesive coating to the end cap.
Inventors
- 👤 T. Edgar Eades
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:52
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/48; C02F2303/00; C02F2303/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
An electrode assembly for an electrostatic water treatment apparatus comprising: (a) an elongated, cylindrical electrode, (b) end closure cap members for said electrode, at least one of said end caps having cylindrical side walls, with an inner portion thereof telescoping within said cylindrical electrode and an outer shoulder portion thereof extending axially outwardly beyond the end of the electrode, (c) a continuous coating of silicone adhesive covering the exterior of the electrode and the outer shoulder portion of the end cap, (d) a thin, impervious insulating sleeve overlying the silicone adhesive coating and also covering the exterior of the electrode and the outer shoulder portion of the end cap, and (e) ring clamp means surrounding said outer shoulder portion of the end cap and securely clamping the insulating sleeve and silicone adhesive coating thereto, thereby permitting rapid expansion and contraction of the assembly due to sudden temperature changes while preventing leakage of water into the interior of the electrode or between the electrode and the insulating sleeve.
Claim 2
Dependent Claim
167 words
An electrode assembly for an electrostatic water treatment apparatus comprising: (a) an elongated, cylindrical electrode, (b) end closure cap members for said electrode, at least one of said end caps having cylindrical side walls, with an inner portion thereof telescoping within said cylindrical electrode and an outer shoulder portion thereof extending axially outwardly beyond the end of the electrode, (c) a continuous coating of silicone adhesive covering the exterior of the electrode and the outer shoulder portion of the end cap, (d) a thin, impervious insulating sleeve overlying the silicone adhesive coating and also covering the exterior of the electrode and the outer shoulder portion of the end cap, and (e) ring clamp means surrounding said outer shoulder portion of the end cap and securely clamping the insulating sleeve and silicone adhesive coating thereto, thereby permitting rapid expansion and contraction of the assembly due to sudden temperature changes while preventing leakage of water into the interior of the electrode or between the electrode and the insulating sleeve.
Claim 3
Dependent Claim
42 words
The assembly of claim 1 wherein the electrode has two end closure caps, each having cylindrical side walls, with an inner portion thereof telescoping within said cylindrical electrode and an outer shoulder portion thereof extending outwardly beyond the end of the electrode.
Claim 4
Dependent Claim
18 words
The assembly of claim 2 wherein one of said closure caps includes an axially outwardly extending threaded nipple.
Claim 5
Dependent Claim
18 words
The assembly of claim 3 wherein the other of said closure caps includes a centering means attached thereto.
Claim 6
Dependent Claim
17 words
The assembly of claim 1, 2 or 3 wherein the closure caps are made of insulating material.
Claim 7
Dependent Claim
214 words
An electrostatic water treatment apparatus comprising a cylindrical shell adapted to hold water under pressure, said shell having end closures and a water inlet and outlet; an electrode assembly extending into said shell and forming with said shell an annular passageway through which water is adapted to flow between said inlet and outlet, said electrode assembly comprising: (a) an elongated, cylindrical electrode, (b) end closure cap members for said electrode, at least one of said end caps having cylindrical side walls, with an inner portion thereof telescoping within said cylindrical electrode and an outer shoulder portion thereof extending axially outwardly beyond the end of the electrode, (c) a continuous coating of silicone adhesive covering the exterior of the electrode and the outer shoulder portion of the end cap, (d) a thin, impervious insulating sleeve overlying the silicone adhesive coating and also covering the exterior of the electrode and the outer shoulder portion of the end cap, and (e) ring clamp means surrounding said outer shoulder portion of the end cap and securely clamping the insulating sleeve and silicone adhesive coating thereto, thereby permitting rapid expansion and contraction of the assembly due to sudden temperature changes while preventing leakage of water into the interior of the electrode or between the electrode and the insulating sleeve.
Claim 8
Dependent Claim
214 words
An electrostatic water treatment apparatus comprising a cylindrical shell adapted to hold water under pressure, said shell having end closures and a water inlet and outlet; an electrode assembly extending into said shell and forming with said shell an annular passageway through which water is adapted to flow between said inlet and outlet, said electrode assembly comprising: (a) an elongated, cylindrical electrode, (b) end closure cap members for said electrode, at least one of said end caps having cylindrical side walls, with an inner portion thereof telescoping within said cylindrical electrode and an outer shoulder portion thereof extending axially outwardly beyond the end of the electrode, (c) a continuous coating of silicone adhesive covering the exterior of the electrode and the outer shoulder portion of the end cap, (d) a thin, impervious insulating sleeve overlying the silicone adhesive coating and also covering the exterior of the electrode and the outer shoulder portion of the end cap, and (e) ring clamp means surrounding said outer shoulder portion of the end cap and securely clamping the insulating sleeve and silicone adhesive coating thereto, thereby permitting rapid expansion and contraction of the assembly due to sudden temperature changes while preventing leakage of water into the interior of the electrode or between the electrode and the insulating sleeve.
Claim 9
Dependent Claim
44 words
An apparatus according to claim 6 wherein the electrode has two end closure caps, each having cylindrical side walls, with an inner portion thereof telescoping within said cylindrical electrode and an outer shoulder portion thereof extending axially outwardly beyond the end of the electrode.
Claim 10
Dependent Claim
51 words
An apparatus according to claim 7 wherein one of said electrode closure caps includes an axially extending threaded nipple which extends through an axial opening in one of said shell end closures and the other of said electrode closure caps includes centering means adapted to center the electrode within the shell.
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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |