Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – And means to form or reshape preform
Patent
1991-06-18
1993-06-29
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
And means to form or reshape preform
425116, 4251291, B29C 4514
Patent
active
052232743
ABSTRACT:
The invention relates to a method of marking the surface of articles, more particularly but not exclusively with a view to obtaining distinctive signs on non-plane surfaces such as the surface of balls. It is characterized in that the material (8) making up the sign (2) is molded on a temporary support (11) that is independent of the article, and one or more benchmarks (12) are molded on that same support; in the mold for the article, which is made in at least two portions (14, 15), the temporary support is inserted, which with the aid of the one or more benchmarks (12) is positioned with respect to one (15) of the portions (14, 15) of the mold; from the inside portion (15) of the mold (13), the material which will make the article is injected into the mold, and with the aid of the pressure of this material, the temporary support is locally deformed and presses its outside face (19) against the impression (17) of the portion of the mold that will form the marked surface of the article that carries the sign; the temporary support is removed, and the surface thus exposed is finish-ground. The invention is applicable to the gambling equipment industry.
REFERENCES:
patent: 1908681 (1933-05-01), Bronson
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patent: 4213926 (1980-07-01), Toyoda et al.
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patent: 4470784 (1984-09-01), Piotrovsky
patent: 4500218 (1985-02-01), Nishikawa
patent: 4657419 (1987-04-01), Takakuwa
patent: 4705469 (1987-11-01), Liebl et al.
Delgrange Jacques
Lelievre Pierre
Mackey James P.
Societe Hutchinson S.A.
Societe Nouvelle des ets Ryo Catteau S.A.
Woo Jay H.
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