Heat-sensitive indicator

Stock material or miscellaneous articles – Hollow or container type article

Patent

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Details

428 357, 428 365, 428138, 428195, 428913, 428914, 426 88, 368327, 374160, B29D 2200, B29D 2300

Patent

active

053689054

ABSTRACT:
In the heat-sensitive indicator herein disclosed, a colored heat-fusible substance 3 is accommodated in an inner hollow portion of a projection 1 which is formed from a film collapsible by application of an external pressure such as a finger-pressure. The opening of the hollow portion is sealed with a thin cover 9 collapsible through the application of the foregoing pressure. An An absorber 7 in which the colored heat-fusible substance 3 in the molten state can permeate is arranged outside the thin cover 9 of the hollow portion. The colored heat-fusible substance 3 is supported by a carrier 5 and accommodated in the interior of the hollow portion of the projection 1. A space in which the carrier is dropped when the thin cover 9 is broken through the application of a pressure is formed, behind the thin cover 9, by a hollow ring 11. The carrier 5 is positioned within the hollow ring 11, which forms the space outside the opening of the hollow portion and behind the thin cover 9 for the opening, and on the absorber 7. The carrier 5 serves to control the rate of permeation of the colored heat-fusible substance into the absorber and accordingly, stable permeation thereof into the absorber 7 can be ensured.

REFERENCES:
patent: 2560537 (1951-07-01), Andersen
patent: 2951764 (1960-09-01), Chase
patent: 3055759 (1962-09-01), Busby et al.
patent: 3242733 (1966-02-01), Johnson
patent: 3243303 (1966-03-01), Johnson
patent: 3362834 (1968-01-01), Kaye
patent: 3479877 (1969-11-01), Allen et al.
patent: 3521489 (1970-07-01), Finkelstein et al.
patent: 3751382 (1973-08-01), Ljungberg et al.
patent: 3954011 (1976-05-01), Manske
patent: 4292916 (1981-10-01), Bradley et al.
patent: 4793717 (1988-12-01), Manske
patent: 5053339 (1991-10-01), Patel
patent: 5058088 (1991-10-01), Haas et al.
patent: 5180598 (1993-01-01), Jozefowicz
French Search Report (dated Nov. 2, 1993) and Annex (dated Nov. 2, 1993), for FA 483660, FR 9302214.

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