US4690803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ozone generator
Assignee: Degremont Technologies AG
•
Filing: 1986-04-14
•
Granted: 1987-09-01
•
Expires: 2006-04-14
Abstract
Abstract In modern ozone generators, high power densities are achievable when dielectrics (3) based on ceramics or filled plastic dielectrics and corresponding gap widths and dual cooling are used. With respect to efficiency, such ozone generators are inferior to those with a glass dielectric. To improve the efficiency and the resistance to the discharge attack, it is proposed to glaze the titanium oxide ceramic on the surface and to coat the plastic dielectrics with a high-temperature ceramic adhesive based on SiO 2 .
Inventors
- 👤 Michael Hirth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:34
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/10; C01B13/11; C01B2201/00; C01B2201/10; C01B2201/14; C01B2201/30; C01B2201/34
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
84 words
In an ozone generator with a first and a second metallic electrode and a layer of a dielectric material of titanium dioxide ceramic or of plastic filled with a dielectric power on that surface of the second electrode which faces the first electrode, and a discharge gap between the first electrode and the dielectric layer, the improvement comprising that the surface facing the discharge gap of the dielectric layer is coated with a protective glass or ceramic layer based on silica (SiO 2 ).
Claim 2
Dependent Claim
84 words
In an ozone generator with a first and a second metallic electrode and a layer of a dielectric material of titanium dioxide ceramic or of plastic filled with a dielectric power on that surface of the second electrode which faces the first electrode, and a discharge gap between the first electrode and the dielectric layer, the improvement comprising that the surface facing the discharge gap of the dielectric layer is coated with a protective glass or ceramic layer based on silica (SiO 2 ).
Claim 3
Dependent Claim
28 words
Ozone generator according to claim 1, wherein the dielectric layer is of titanium dioxide ceramic, and its free surface is coated with a protective layer of passivating glass.
Claim 4
Dependent Claim
17 words
Ozone generator according to claim 2, wherein the dielectric layer is between 5 and 500 μm thick.
Claim 5
Dependent Claim
34 words
Ozone generator according to claim 1, wherein the dielectric layer is of plastic filled with a dielectric powder, and its free surface is coated with a high-temperature ceramic adhesive based on SiO 2 .
Claim 6
Dependent Claim
29 words
Ozone generator according to claim 4, wherein an interlayer based on Al 2 O 3 is provided as an adhesion-promoter between the dielectric layer and the ceramic adhesive layer.
Claim 7
Dependent Claim
21 words
Ozone generator according to claim 4 or 5, wherein the thickness of the dielectric layer is between 10 and 500 μm.
References Cited (Backward Citations)
US1322907A
Cited
US1505603A
Cited
US3576733A
Cited
US3671417A
Cited
DE2705094A1
Cited
US4216096A
Cited
JPS5515962A
Cited
US4293775A
Cited
US4320301A
Cited
US4417966A
Cited
EP0054994A1
Cited
DE3128746A1
Cited
DE3442121A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |