GB1289758A - - Google Patents
Info
- Publication number
- GB1289758A GB1289758A GB1289758DA GB1289758A GB 1289758 A GB1289758 A GB 1289758A GB 1289758D A GB1289758D A GB 1289758DA GB 1289758 A GB1289758 A GB 1289758A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ventilator
- roof
- valve
- cover
- air
- 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
- 238000009423 ventilation Methods 0.000 abstract 2
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/17—Ventilation of roof coverings not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
1289758 Roof ventilation J A HOOKER and W M CRAIG 19 April 1971 [20 Feb 1970] 8208/70 Heading E1W A roof with an impervious covering, e.g. 16, is ventilated by a ventilator with a modified one-way valve 6 which allows only a controlled downward leakage under suction from inside the roof, but allows egress of air from the roof during the day and the night. The ventilator has an apertured base 1 and a cover 4 secured, e.g. by vanes 5, and a screen 9 arranged above the valve. The valve may, as shown, comprise a base 7 of, e.g. copper, with a bowled upper surface with radiating grooves (13) therein (Fig. 2, not shown) extending from a central aperture 10, the aperture normally being closed by a flexible disc 8, of rubber or plastics, which can, however, flex to allow some ingress of air. Alternatively, the disc could have radiating grooves, stopping short of the periphery. The tube 3 of the ventilator extends up into the cover 4 to prevent flooding of the ventilator. With a concrete deck 14, small holes are preferably formed therein for ventilation purposes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB820870 | 1970-02-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1289758A true GB1289758A (en) | 1972-09-20 |
Family
ID=9847957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1289758D Expired GB1289758A (en) | 1970-02-20 | 1970-02-20 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1289758A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4223486A (en) * | 1978-11-13 | 1980-09-23 | Kelly Thomas L | Roof equalizer |
FR2459858A1 (en) * | 1979-06-22 | 1981-01-16 | Gaf Corp | CHIMNEY OF EVENT COMBINE FOR ROOF |
GB2157738A (en) * | 1984-03-12 | 1985-10-30 | Nicholl & Wood Limited | Improvements in roof ventilation |
US5749780A (en) * | 1996-09-05 | 1998-05-12 | Icopa A/S | Roof vent |
GB2378750A (en) * | 2001-11-05 | 2003-02-19 | Intervent Cowl Products Uk Ltd | Roof ventilation cowl |
-
1970
- 1970-02-20 GB GB1289758D patent/GB1289758A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4223486A (en) * | 1978-11-13 | 1980-09-23 | Kelly Thomas L | Roof equalizer |
FR2459858A1 (en) * | 1979-06-22 | 1981-01-16 | Gaf Corp | CHIMNEY OF EVENT COMBINE FOR ROOF |
GB2157738A (en) * | 1984-03-12 | 1985-10-30 | Nicholl & Wood Limited | Improvements in roof ventilation |
US5749780A (en) * | 1996-09-05 | 1998-05-12 | Icopa A/S | Roof vent |
GB2378750A (en) * | 2001-11-05 | 2003-02-19 | Intervent Cowl Products Uk Ltd | Roof ventilation cowl |
GB2378750B (en) * | 2001-11-05 | 2003-12-31 | Intervent Cowl Products Uk Ltd | Roof ventilation cowl |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |