Sleeve assembly for forming openings in molded structures

Details Sleeve assembly for forming openings in molded structures Sleeve assembly for forming openings in molded structures

1977-05-09

1979-06-26

Husar, Francis S.

Static molds

Uniting preform with molding material

Including means other than mold surface to support preform

249 43, 249177, 249217, E04G 1708

Patent

active

041590996

ABSTRACT:
A sleeve assembly for forming a lined opening in molded structures made from concrete or the like, the sleeve providing the lining and being held in place during formation of the structure by a pair of conical sleeve lock elements having extended tapering surfaces for supporting sleeves of a variety of sizes, the sleeve lock elements preferably being held in place upon forming panels for the structure by means of a central stabilizing rod penetrating through the sleeve lock elements and the panels. An additional embodiment of the sleeve assembly is adapted to be secured to a generally horizontal panel upon which a molded structure such as a floor is formed.

REFERENCES:
patent: 395061 (1888-12-01), Kellogg
patent: 1767834 (1930-06-01), Carlson
patent: 2314866 (1943-03-01), Bosco
patent: 2968855 (1961-01-01), Stolz

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