Fixing rigid inserts in flexible material
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United States of America Patent
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Aug 19, 1986
Grant Date -
N/A
app pub date -
May 17, 1983
filing date -
Oct 8, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To achieve highly fluid-tight sealing of a rigid insert into an orifice in flexible material (101), the insert is made in two parts (103, 106) which can be pressed together with purely axial movement, one part deforming slightly relative to the other at least during the movement, until they adopt as a result of interengagement between them a relationship in which they exert a predetermined sealing pressure on the edge portion of the flexible material between their radially extending flanges (108, 109). A bead (102) may be accommodated in an oversize recess (122) in the flanges. A sub-assembly such as an eyepiece (111) is held fluid tight in one (103) of the parts. Detent means (107, 116) are designed to maintain a sealing contact even if the flexible material (101) or sealing ring (118) creep or set. Though the orifice has an endless edge it is not necessarily circular in outline.
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