Moulding tool

Details Moulding tool Moulding tool

1981-10-19

1982-12-28

Flint, Jr., J. Howard

Static molds

Uniting preform with molding material

Including means other than mold surface to support preform

425 44, 425124, 425116, 249 8, B28B 706, B28B 716, B28B 2300

Patent

active

043657826

ABSTRACT:
Moulding tool for making an article from vibrated concrete optimized as regards strength, the article having embedded therein a tubular sleeve located by a pin during the moulding process. The moulding tool is designed to keep the interior of the sleeve free from concrete and to decrease wear and mechanical stress exerted on the pin during the moulding process. Such a moulding tool is characterized in that, during the moulding process, the pin extends through a sealing and dampening body made from an elastic or semi-hard material, the sealing and dampening body having sealing engagement with the pin. The sealing and dampening body is compressed by the sleeve so that a sealing engagement is achieved between one end of the sleeve and the sealing and dampening body and between the other end of the sleeve and a surface of the moulding tool.

REFERENCES:
patent: 2305252 (1942-12-01), Hayden
patent: 3036349 (1962-05-01), Edgerton
patent: 3108329 (1963-10-01), Chapman
patent: 3685782 (1972-08-01), Kowell
patent: 3712575 (1973-01-01), Bement et al.
patent: 3810339 (1974-05-01), Russo
patent: 3933334 (1976-01-01), Edwards
patent: 4084780 (1978-04-01), Mess
patent: 4159099 (1979-06-01), Maguire

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