Structural article with molded protective exposed surface

Details Structural article with molded protective exposed surface Structural article with molded protective exposed surface

1976-12-01

1979-02-06

Ansher, Harold

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

264128, 264271, 264311, 428218, 428325, 428406, 428539, 428911, B29D 302, B29F 110, B32B 2704

Patent

active

041385241

ABSTRACT:
A method of forming an article defining an integral protective surface comprising providing a mould defining at least that face of the article to be formed with the protective surface, inserting a plurality of minute hard chemically inactive spheroidal members into a medium bonding substance of less specific gravity than the spheroidal members and in which the article, at least that part of the article at the relevant surface, is to be moulded, maneuvering the mould and placing the bonding substance therein, before or after the spheroidal members have been inserted, so as to cause the spheroidal members by their density displacing the bonding substance to migrate to form a compact layer at the aforementioned surface and allowing the substance to harden to retain the spheroidal members at that surface.

REFERENCES:
patent: 2336384 (1943-12-01), Baker et al.
patent: 2646364 (1953-07-01), Porth
patent: 2944821 (1960-07-01), Mason
patent: 3021573 (1962-02-01), Bentov
patent: 3052927 (1962-09-01), Hoppe et al.
patent: 3056704 (1962-10-01), Rothweiler et al.
patent: 3123515 (1964-03-01), Barna
patent: 3230284 (1966-01-01), Iverson et al.
patent: 3290426 (1966-12-01), Barrentine
patent: 3325303 (1967-06-01), Lant et al.
patent: 3371135 (1968-02-01), Goodwin

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