Form for producing arcuate bores in poured concrete slabs

Details Form for producing arcuate bores in poured concrete slabs Form for producing arcuate bores in poured concrete slabs

1981-11-25

1987-11-17

Silbaugh, Jan H.

Static molds

Core

Including means for attaching core to a support

249 13, 249 39, 249142, 249175, 249188, B28B 716, B28B 728, E04G 1506

Patent

active

047069279

ABSTRACT:
An arcuate plastic shoe-like sleeve form with an upper open minor end and a lower open major end is provided for attachment by a mounting flange on its major end to a form structure for poured concrete slabs, such as a floor, so that, after concrete is poured and set on the form structure, an arcuate opening is produced in the slab through which a pipe, electrical conduit and the like can be easily threaded as it is moved parallel with the slab and introduced into the opening.

REFERENCES:
patent: 1801346 (1931-04-01), Heath
patent: 2775017 (1956-12-01), McDonough
patent: 3123885 (1964-03-01), Marler
patent: 3265349 (1966-08-01), Hamrick
patent: 3346230 (1967-10-01), Tolf
patent: 3758068 (1973-09-01), Lengel
patent: 4030866 (1977-06-01), Madej
patent: 4077599 (1978-03-01), Oland
patent: 4278229 (1981-07-01), Burlett

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