FR2320026A1 - Protective envelope for electric device - is used in explosive environment and comprises two cylindrical elements sealed together - Google Patents
Protective envelope for electric device - is used in explosive environment and comprises two cylindrical elements sealed togetherInfo
- Publication number
- FR2320026A1 FR2320026A1 FR7524149A FR7524149A FR2320026A1 FR 2320026 A1 FR2320026 A1 FR 2320026A1 FR 7524149 A FR7524149 A FR 7524149A FR 7524149 A FR7524149 A FR 7524149A FR 2320026 A1 FR2320026 A1 FR 2320026A1
- Authority
- FR
- France
- Prior art keywords
- envelope
- explosive environment
- electric device
- protective envelope
- cylindrical elements
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/06—Hermetically-sealed casings
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The protective envelope is used for an electrical device, located within a potentially explosive environment, so as to contain an internal spark or flash. The envelope comprises at least two cylindrical elements, surrounding the electrical device and fitted together via a joint with a stepped edge, for preventing the spark etc. travelling to the outside of the envelope. One of the elements defining the envelope may have a cylindrical opening surrounded by a shoulder (4), the other element having a cylindrical projection which fits into the opening. The elements may comprise a casing containing the electrical device, e.g. a motor, and a cover fitting over the casing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7524149A FR2320026A1 (en) | 1975-08-01 | 1975-08-01 | Protective envelope for electric device - is used in explosive environment and comprises two cylindrical elements sealed together |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7524149A FR2320026A1 (en) | 1975-08-01 | 1975-08-01 | Protective envelope for electric device - is used in explosive environment and comprises two cylindrical elements sealed together |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2320026A1 true FR2320026A1 (en) | 1977-02-25 |
FR2320026B1 FR2320026B1 (en) | 1979-06-15 |
Family
ID=9158684
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7524149A Granted FR2320026A1 (en) | 1975-08-01 | 1975-08-01 | Protective envelope for electric device - is used in explosive environment and comprises two cylindrical elements sealed together |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2320026A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2411538A1 (en) * | 1977-12-09 | 1979-07-06 | Chalmers & Mitchell Ltd | Explosion-proof electrical appts. casing - is constructed with flame trap and filter for deionising and cooling escaping combustion prods. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE885105C (en) * | 1951-06-27 | 1953-08-03 | Paul Jordan | Housing, in particular junction or junction box |
US3317072A (en) * | 1963-08-28 | 1967-05-02 | Killark Electric Mfg Company | Cast box |
FR2110711A5 (en) * | 1970-10-27 | 1972-06-02 | Materiel Elect Perfectio | |
DE2060475A1 (en) * | 1970-12-09 | 1972-06-15 | Bbc Brown Boveri & Cie | Cable connection of an explosion-proof device |
FR2223813A1 (en) * | 1973-03-27 | 1974-10-25 | Siemens Ag |
-
1975
- 1975-08-01 FR FR7524149A patent/FR2320026A1/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE885105C (en) * | 1951-06-27 | 1953-08-03 | Paul Jordan | Housing, in particular junction or junction box |
US3317072A (en) * | 1963-08-28 | 1967-05-02 | Killark Electric Mfg Company | Cast box |
FR2110711A5 (en) * | 1970-10-27 | 1972-06-02 | Materiel Elect Perfectio | |
DE2060475A1 (en) * | 1970-12-09 | 1972-06-15 | Bbc Brown Boveri & Cie | Cable connection of an explosion-proof device |
FR2223813A1 (en) * | 1973-03-27 | 1974-10-25 | Siemens Ag |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2411538A1 (en) * | 1977-12-09 | 1979-07-06 | Chalmers & Mitchell Ltd | Explosion-proof electrical appts. casing - is constructed with flame trap and filter for deionising and cooling escaping combustion prods. |
Also Published As
Publication number | Publication date |
---|---|
FR2320026B1 (en) | 1979-06-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |