Special receptacle or package – For mixing
Patent
1988-11-09
1989-09-05
Price, William
Special receptacle or package
For mixing
366602, B65D 2504, B65D 2508
Patent
active
048630179
ABSTRACT:
A capsule for dental amalgam comprises a reservoir portion which has an open end and which contains the silver or silver alloy powder component of the amalgam and a cap portion which has an open end which is meant for containing the liquid or mercury component of the amalgam. A preferably funnel-shaped partition is fixed to the cap portion for retaining the mercury component therein. An orifice is provided in the base of the funnel-shaped partition. The orifice is of a size to prevent leakage of the mercury when the capsule is exposed to accelerations which are below a threshold value and which are typical for storage and transport of the capsule. When the capsule is exposed to acceleration above this threshold value, for example, when the capsule is placed in an amalgamator for mixing the components with each other, the mercury is forced through the orifice and into the powder component. After the amalgam is prepared, the cap can be removed along with its partition to expose the amalgam which is immediately ready for use.
REFERENCES:
patent: 2487236 (1949-11-01), Greenberg
patent: 3451540 (1969-06-01), Kulischenko
patent: 4182447 (1980-01-01), Kay
patent: 4362242 (1982-12-01), Cheetham
patent: 4450958 (1984-05-01), Prasad
patent: 4515267 (1985-05-01), Welsh
patent: 4557376 (1985-12-01), Probst et al.
patent: 4632243 (1986-12-01), Muhlbauer
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