Static molds – Core – Of resilient material capable of flexure to aid removal of...
Patent
1994-03-07
1995-04-11
Nguyen, Khanh
Static molds
Core
Of resilient material capable of flexure to aid removal of...
249 40, 249 43, 249184, 249190, 249213, 249216, 249217, 249 83, B28B 718, E04G 1706
Patent
active
054051193
ABSTRACT:
A sleeve assembly for forming a lined opening in molded structures made from concrete or the like. The sleeve provides the lining. During formation of the structure, the sleeve is held in place by a pair of generally hemispherical end cups having tapering and/or curving surfaces for supporting sleeves of a variety of sizes. The end cups are preferably held in place by a retainer which passes through the sleeve and is connected to the end cups by loose fitting clips which are mounted in the end cups. The sleeve assembly is adapted to be secured between a pair of generally parallel panels between which a molded structure such as a wall is formed.
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Nguyen Khanh
Weber Jr. G. Donald
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