Slit valve ventilator and method of attaching same
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United States of America Patent
Stats
-
Jul 28, 1981
Issued Date -
N/A
app pub date -
Jan 14, 1980
filing date -
May 11, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air supply means includes a frame providing a valve seat and defining a valve opening. A valve body is adjustably connected to the frame. A plurality of V-shaped fasteners are used to secure the frame in an air duct. Each fastener has a pair of angularly disposed legs receivable in a slot in the opposed top and bottom walls of the frame, the legs meeting at an apex which is positioned toward the entrance to the duct. To attach the frame to the duct, a punch-like member is used to strike the apex of the fastener to spread the legs thereof and drive them through the slots in the opposing walls of the frame and thence, into the walls of the duct.
First Claim
Family
International Classification(s)
Cited Art Landscape
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