Closure mechanism with gas seal
Number of patents in Portfolio can not be more than 2000
United States of America
Stats
-
Aug 29, 1989
Grant Date -
N/A
app pub date -
Nov 25, 1987
filing date -
Jul 12, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A closure mechanism includes a conical discharge nozzle and a shielding tube fitted over the exterior of the discharge nozzle. A snug conical joint is formed by closely complementary conical surfaces of the discharge nozzle and the shielding tube. At least one ring-shaped seal is provided in such joint to prevent exterior air from entering between the discharge nozzle and the shielding tube into the interior of the shielding tube. The ring-shaped seal comprises an annular recess formed in one of the conical surfaces, thereby defining an annular chamber, and an inert gas filling such chamber.
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Cited Art Landscape
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