GB573951A - Improvements in filters - Google Patents
Improvements in filtersInfo
- Publication number
- GB573951A GB573951A GB30134/39A GB3013439A GB573951A GB 573951 A GB573951 A GB 573951A GB 30134/39 A GB30134/39 A GB 30134/39A GB 3013439 A GB3013439 A GB 3013439A GB 573951 A GB573951 A GB 573951A
- Authority
- GB
- United Kingdom
- Prior art keywords
- asbestos
- wool
- resin
- mixture
- group xxviii
- 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.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/192—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by electrical means, e.g. by applying electrostatic fields or high voltages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrostatic Separation (AREA)
Abstract
573,951. Treating gases electrically. GREEN, H. L., HILL, A. S. G., and THOMAS, D. J. Nov. 15, 1939, No. 30134. [Class 39 (i)] [Also in Group XXVIII] A gas filter is formed of wool in which a proportion of resin is mixed and the mixture is carded to form a lap of uniform thickness in which the resin is thus permanently electrified. Asbestos may be incorporated in the mixture ; other fibres may replace the wool and asbestos. Reference has been directed by the Comptroller to Specification 433,186, [Group XXVIII].
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30134/39A GB573951A (en) | 1939-11-15 | 1939-11-15 | Improvements in filters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB30134/39A GB573951A (en) | 1939-11-15 | 1939-11-15 | Improvements in filters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB573951A true GB573951A (en) | 1945-12-14 |
Family
ID=10302847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30134/39A Expired GB573951A (en) | 1939-11-15 | 1939-11-15 | Improvements in filters |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB573951A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4886058A (en) * | 1988-05-17 | 1989-12-12 | Minnesota Mining And Manufacturing Company | Filter element |
-
1939
- 1939-11-15 GB GB30134/39A patent/GB573951A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4886058A (en) * | 1988-05-17 | 1989-12-12 | Minnesota Mining And Manufacturing Company | Filter element |
USRE35062E (en) * | 1988-05-17 | 1995-10-17 | Minnesota Mining And Manufacturing Company | Filter element |
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