UST889010I4 - Tapley electrical capacitors - Google Patents
Tapley electrical capacitors Download PDFInfo
- Publication number
- UST889010I4 UST889010I4 US889010DH UST889010I4 US T889010 I4 UST889010 I4 US T889010I4 US 889010D H US889010D H US 889010DH US T889010 I4 UST889010 I4 US T889010I4
- Authority
- US
- United States
- Prior art keywords
- phenolic antioxidant
- electrical capacitors
- tapley
- capacitors
- dielectric liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 title abstract description 9
- 239000002530 phenolic antioxidant Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 4
- -1 POLYPROPYLENE Polymers 0.000 abstract description 2
- 239000004743 Polypropylene Substances 0.000 abstract description 2
- 229920001155 polypropylene Polymers 0.000 abstract description 2
- 239000012047 saturated solution Substances 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
- H01G4/22—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
- H01G4/22—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated
- H01G4/221—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated characterised by the composition of the impregnant
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Organic Insulating Materials (AREA)
Abstract
ELECTRICAL CAPACITORS CONTAINING POLYPROPYLENE SPACER SHEETS WHICH CONTAIN 0.01 TO 1.0% BY WEIGHT OF PHENOLIC ANTIOXIDANT; THE CAPACITOR IS ALSO IMPREGNATED WITH A DIELECTRIC LIQUID COMPRISING A SATURATED SOLUTION OF THE PHENOLIC ANTIOXIDANT. THESE CAPACITORS HAVE INCREASED LIFE AT ELEVATED TEMPERATURES AS COMPARED WITH THOSE IN WHICH THE DIELECTRIC LIQUID IS FREE OF THE PHENOLIC ANTIOXIDANT.
Description
DEFENSIVE PUBLICATION l UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1989, 869 0.6. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The tiles of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED AUGUST 31, 1971 T889,010 ELECTRICAL CAPACITORS John Graham Tapley, Welwyn Garden City, England, assignor to Imperial Chemical Industries Limited, London, England Filed Aug. 18, 1970, Ser. No. 64,807 Claims priority, application Great Britain, Aug. 25, 1969, 42,260/ 69 Int. Cl. H01g 3/04 U.S. Cl. 317-259 1 Sheet Drawing. 7 Pages Specification Electrical capacitors containing polypropylene spacer sheets which contain 0.01 to 1.0% by weight of a phenolic antioxidant; the capacitor is also impregnated with a dielectric liquid comprising a saturated solution of the phenolic antioxidant. These capacitors have increased life at elevated temperatures as compared with those in which the dielectric liquid is free of the phenolic antioxidant.
ELECTRICAL CAPACITORS Filed Aug. 18, 1970 IIIIIIIIIJII'I- INVENTOR t//r/v G'efl/MM 7:9PAE y ATTORNEYS
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4226069 | 1969-08-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
UST889010I4 true UST889010I4 (en) | 1971-08-31 |
Family
ID=10423611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US889010D Pending UST889010I4 (en) | 1969-08-25 | 1970-08-18 | Tapley electrical capacitors |
Country Status (4)
Country | Link |
---|---|
US (1) | UST889010I4 (en) |
AU (1) | AU1917470A (en) |
DE (1) | DE2042196A1 (en) |
GB (1) | GB1250379A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4117579A (en) | 1976-06-01 | 1978-10-03 | General Electric Company | Method of impregnating a capacitor |
US4161564A (en) | 1975-09-11 | 1979-07-17 | La Barge, Inc. | Coating formulation, method, and coated substrate |
US20110279946A1 (en) * | 2009-01-30 | 2011-11-17 | Molex Incorporated | Connector using liquid dielectric for improved performance |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4312794A (en) * | 1980-04-02 | 1982-01-26 | Electric Power Research Institute, Inc. | Ultra pure tetrachloroethylene dielectric fluid |
US4485024A (en) * | 1982-04-07 | 1984-11-27 | Nippon Seiko Kabushiki Kaisha | Process for producing a ferrofluid, and a composition thereof |
US4459637A (en) * | 1983-05-31 | 1984-07-10 | Emhart Industries, Inc. | Dielectric fluid for a capacitor |
CN110073457A (en) * | 2017-01-03 | 2019-07-30 | Abb瑞士股份有限公司 | Insulation system and capacitor |
-
1969
- 1969-08-25 GB GB4226069A patent/GB1250379A/en not_active Expired
-
1970
- 1970-08-18 US US889010D patent/UST889010I4/en active Pending
- 1970-08-25 AU AU19174/70A patent/AU1917470A/en not_active Expired
- 1970-08-25 DE DE19702042196 patent/DE2042196A1/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4161564A (en) | 1975-09-11 | 1979-07-17 | La Barge, Inc. | Coating formulation, method, and coated substrate |
US4117579A (en) | 1976-06-01 | 1978-10-03 | General Electric Company | Method of impregnating a capacitor |
US20110279946A1 (en) * | 2009-01-30 | 2011-11-17 | Molex Incorporated | Connector using liquid dielectric for improved performance |
US9004925B2 (en) * | 2009-01-30 | 2015-04-14 | Molex Incorporated | Capacitively coupled connector using liquid dielectric for improved performance |
Also Published As
Publication number | Publication date |
---|---|
DE2042196A1 (en) | 1971-03-04 |
GB1250379A (en) | 1971-10-20 |
AU1917470A (en) | 1972-03-02 |
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