AT344857B - PRESSURE FLAP FOR FAN - Google Patents
PRESSURE FLAP FOR FANInfo
- Publication number
- AT344857B AT344857B AT880676A AT880676A AT344857B AT 344857 B AT344857 B AT 344857B AT 880676 A AT880676 A AT 880676A AT 880676 A AT880676 A AT 880676A AT 344857 B AT344857 B AT 344857B
- Authority
- AT
- Austria
- Prior art keywords
- fan
- pressure flap
- flap
- pressure
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
- F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752557582 DE2557582C3 (en) | 1975-12-20 | 1975-12-20 | Overpressure damper for fan |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA880676A ATA880676A (en) | 1977-12-15 |
AT344857B true AT344857B (en) | 1978-08-10 |
Family
ID=5965006
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT880676A AT344857B (en) | 1975-12-20 | 1976-11-29 | PRESSURE FLAP FOR FAN |
Country Status (8)
Country | Link |
---|---|
AT (1) | AT344857B (en) |
BE (1) | BE849425A (en) |
CH (1) | CH600162A5 (en) |
DE (1) | DE2557582C3 (en) |
FR (1) | FR2335713A1 (en) |
GB (1) | GB1549944A (en) |
IT (1) | IT1123040B (en) |
SE (1) | SE429376B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2204660B (en) * | 1987-04-11 | 1991-04-17 | Pentec Engineering Services Li | Valve arrangement |
DE8810027U1 (en) * | 1988-08-05 | 1988-09-22 | Haver & Boecker, 4740 Oelde | Device for filling open containers |
DE4333663C1 (en) * | 1993-10-02 | 1995-05-11 | Patent Und Innovationsagentur | Flap valve with cylindrical housing |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2279425A (en) * | 1939-11-16 | 1942-04-14 | Westinghouse Electric & Mfg Co | Discharge shutter for blowers |
GB1197023A (en) * | 1968-04-04 | 1970-07-01 | Royair Ltd | Improvements in and relating to Dampers for Ventilating Systems |
US3826179A (en) * | 1972-10-20 | 1974-07-30 | American Warming Ventilation | Differential pressure responsive damper |
DE2431065A1 (en) * | 1974-06-28 | 1976-01-15 | Maico Elektroapparate | Cover system for extractor fan or apertures - has pivoted lamellae with stepped static splints acting as closure stops |
-
1975
- 1975-12-20 DE DE19752557582 patent/DE2557582C3/en not_active Expired
-
1976
- 1976-10-30 CH CH1367576A patent/CH600162A5/xx not_active IP Right Cessation
- 1976-11-24 IT IT5231776A patent/IT1123040B/en active
- 1976-11-29 AT AT880676A patent/AT344857B/en not_active IP Right Cessation
- 1976-12-01 SE SE7613450A patent/SE429376B/en not_active IP Right Cessation
- 1976-12-13 FR FR7637509A patent/FR2335713A1/en active Granted
- 1976-12-15 BE BE173275A patent/BE849425A/en not_active IP Right Cessation
- 1976-12-20 GB GB5305376A patent/GB1549944A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2557582B2 (en) | 1979-03-01 |
SE7613450L (en) | 1977-06-21 |
CH600162A5 (en) | 1978-06-15 |
BE849425A (en) | 1977-04-01 |
IT1123040B (en) | 1986-04-30 |
ATA880676A (en) | 1977-12-15 |
SE429376B (en) | 1983-08-29 |
FR2335713A1 (en) | 1977-07-15 |
FR2335713B1 (en) | 1982-07-02 |
GB1549944A (en) | 1979-08-08 |
DE2557582C3 (en) | 1979-10-18 |
DE2557582A1 (en) | 1977-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ELJ | Ceased due to non-payment of the annual fee |