Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se
Patent
1981-02-17
1983-12-27
Hoag, Willard E.
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
264333, B28B 114, B28B 706, B28B 716
Patent
active
044229941
ABSTRACT:
Method and apparatus for forming inverts in the manhole base of a manhole assembly using a single pour technique. In the single pour technique, the invert is formed simultaneously with the formation of the manhole base through the use of apparatus including a mold member having a channel-shaped projection for defining the invert. Means are provided for simply, and yet precisely, aligning the mold member having the channel-shaped projection with the members forming the openings in the base member sidewalls by forming a base member whose invert is in precise alignment with associated sidewall openings. The apparatus utilized incorporates at least one adjustably positionable channel-forming assembly for forming an invert for communicating between associated sidewall openings each having a central axis whose intersecting central axes define an angle different from 180.degree.. Alignment members on the channel-forming members employed in the two pour technique cooperate with a joining bar and clamping means to assure precise horizontal alignment between the channel-shaped projections utilized to form the invert.
REFERENCES:
patent: 2623259 (1952-12-01), Schuh
patent: 2681494 (1954-06-01), Weber
patent: 2917804 (1959-12-01), Barron
patent: 3363876 (1968-01-01), Moore
patent: 3415482 (1968-12-01), Schmidgall
patent: 3734450 (1974-05-01), Lengl
patent: 3758066 (1973-09-01), Skinner et al.
patent: 3815214 (1974-06-01), Kyle
patent: 3974615 (1976-08-01), Ditcher
patent: 4085918 (1978-04-01), Wilkerson
patent: 4103862 (1978-08-01), Moore
patent: 4119291 (1978-10-01), Polito
patent: 4143849 (1979-03-01), Good
patent: 4177229 (1979-12-01), Moore
patent: 4278229 (1981-07-01), Burlett
patent: 4318880 (1982-03-01), McIntosh et al.
A-Lok Products, Inc.
Hoag Willard E.
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