Stock material or miscellaneous articles – Hollow or container type article
Patent
1993-02-05
1994-11-29
Ryan, Patrick J.
Stock material or miscellaneous articles
Hollow or container type article
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.
Krynski William A.
Nichiyu Giken Kogyo Co., Ltd.
Ryan Patrick J.
LandOfFree
Heat-sensitive indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heat-sensitive indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat-sensitive indicator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-72846