Removable recess forming insert

Details Removable recess forming insert Removable recess forming insert

1990-01-25

1991-04-02

Housel, James C.

Static molds

Uniting preform with molding material

Including means other than mold surface to support preform

521254, 249 95, 249177, 249183, E04G 1504

Patent

active

050042084

ABSTRACT:
A removable recess forming rubber insert is immersed in wet concrete after pouring, installing in the resulting concrete unit a lifting anchor or stirrup for moving the concrete unit with a lifting hook and cable. The rubber insert, has a stirrup eye for supporting and encompassing a portion of the lifting stirrup and a stirrup release slot for releasing the stirrup as the insert is removed from the hardened concrete unit. The insert utilizes a standard reinforcing bar as the lifting stirrup. The insert is formed as a mold body having a semi-cylindrical lower face to allow easy removal of the insert and to provide a recess for access to the lifting stirrup by a lifting hook. A protruding mold thumb is used to remove the insert after the concrete unit has hardened.

REFERENCES:
patent: 1045587 (1912-11-01), Morley
patent: 2344206 (1944-03-01), Forni
patent: 2366656 (1945-01-01), Saffert
patent: 2623261 (1952-12-01), Semeraro
patent: 3534668 (1970-10-01), Scheincha
patent: 3731902 (1973-05-01), Shoemaker
patent: 4087947 (1978-05-01), Turner
patent: 4296909 (1981-10-01), Haeussler
patent: 4797081 (1989-01-01), Prater
patent: 4821994 (1989-04-01), Fricker

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