Manhole lift insert locator

Details Manhole lift insert locator Manhole lift insert locator

1997-09-26

2000-08-29

Mackey, James P.

Static molds

Uniting preform with molding material

Including means other than mold surface to support preform

249 93, 249205, B28B 2300

Patent

active

061095877

ABSTRACT:
A manhole lift insert positioning apparatus consisting of: (1) a threaded nut imbedded in a thermoplastic elastomer molding that fits snugly within a lift insert, and (2) a threaded wing bolt to engage the nut and expand the molding within the insert, thereby locking it in position and drawing the molding against the inside face of the concrete form, thus sealing the insert opening to avoid obstruction of that opening with concrete.

REFERENCES:
patent: 3680826 (1972-08-01), Bassani
patent: 3982363 (1976-09-01), Dorris
patent: 4159099 (1979-06-01), Maguire
patent: 4427173 (1984-01-01), MacKay
patent: 4749170 (1988-06-01), Ase
patent: 4948089 (1990-08-01), Knodel et al.
Photographs showing side elevational and top perspective views of prior lift insert locator device.

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