Abstract: A ventilator comprises an elongate strip (10) formed as a single component including an integral formation (19,23) extending adjacent an intermediate portion (13), the formation defining an opening (24,33) which is below openings (22) in the intermediate portion (13) thereby ensuring that there is no direct passage to and from the said openings (22) in the intermediate portion (13) in a direction normal thereto.
Type:
Grant
Filed:
November 1, 1991
Date of Patent:
August 11, 1992
Assignee:
R. W. Simon Limited
Inventors:
Matthew T. Archer, Martin P. Godward, Michael A. Ganss
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