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
Application number
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1289758A publication Critical patent/GB1289758A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/17Ventilation 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.
GB1289758D 1970-02-20 1970-02-20 Expired GB1289758A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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