Method and apparatus for inserting dowel bars for a concrete sli

Details Method and apparatus for inserting dowel bars for a concrete sli Method and apparatus for inserting dowel bars for a concrete sli

1991-06-10

1993-05-11

Britts, Ramon S.

Road structure, process, or apparatus

Apparatus

Means to install or form joint

425 60, E01C 2302, B28B 100

Patent

active

052096025

ABSTRACT:
A method and apparatus for inserting dowel bars into a concrete slab is used in association with a slip forming machine of a type having a frame with a pan attached thereto for shaping uncured concrete into a continuous concrete slab. A plurality of openings are exposed through the pan and are spaced across the pan. Dowel bar retainers are disposed in each respective one of the openings for holding a dowel bar in readiness to be inserted into the concrete slab. A dowel bar inserter is disposed above each of the dowel bar retainers for pushing a dowel bar disposed in a respective one of the dowel bar retainers through a respective one of the openings and into the concrete slab. Apparatus is provided for automatically and independently actuating each one of the dowel bar inserters at a predetermined place in a concrete slab whereby respective ones of the dowel bars disposed in respective ones of the dowel bar inserters can be positioned in the concrete in a predetermined pattern across the concrete slab.

REFERENCES:
patent: 2295947 (1942-09-01), Heltzel
patent: 4433936 (1984-02-01), Moser
patent: 4688963 (1987-08-01), Ritchey et al.
patent: 4798495 (1989-01-01), Laeuppi et al.
patent: 4799820 (1989-01-01), Laeuppi et al.
Copy of two page brochure entitled Gomaco DBI 650 by Gomaco Corporation dated 1984.
Copy of eight page brochure entitled GP-2500 Full-Width Slipform Paver by Gomaco Corporation dated 1987.

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