초록 ▼

A two-piece, two chamber self-activating capsule having mercury in one chamber and metal powder in the other. In use, the capsule is shaken and the resulting force due to the inertia of the mercury forces its way through a normally-closed valve into the metal powder chamber, whereby the metal powder

A two-piece, two chamber self-activating capsule having mercury in one chamber and metal powder in the other. In use, the capsule is shaken and the resulting force due to the inertia of the mercury forces its way through a normally-closed valve into the metal powder chamber, whereby the metal powder and mercury become triturated by the shaking and form dental amalgam for filling teeth. A pestle may be included to facilitate mingling and triturating the amalgam components.

대표청구항 ▼

1. A capsule for containing in unmixed condition the components of a dental amalgam, said capsule having a mixing chamber, said chamber being provided by wall means, said wall means enclosing a space in said capsule such as to provide a surface which bounds said space and defines a mixing chamber sh

1. A capsule for containing in unmixed condition the components of a dental amalgam, said capsule having a mixing chamber, said chamber being provided by wall means, said wall means enclosing a space in said capsule such as to provide a surface which bounds said space and defines a mixing chamber shaped and dimensioned for mixing said components, if said components be present in said chamber while said capsule is being shaken; said wall means also providing a mercury chamber for containing mercury, both said chambers being normally closed off from each other, with the mercury chamber containing mercury and said mixing chamber containing dental alloy, and there being sufficient space in said mercury chamber that if said capsule be shaken, said mercury strikes a place on said wall means and thereby exerts inertial force on said wall means at said place; said wall means having valve means responsive to said force for deflecting a portion of said wall means into said chamber, such deflection altering the original shape of said surface while at the same time providing a way for mercury to both enter into said mixing chamber through said valve means and cease exerting said inertial force on said wall means at said place, said valve means being responsive to such cessation of exerting said inertial force for causing said portion of said wall means to deflect such as to restore said chamber to its said original shape. 2. The capsule of claim 1, wherein said mixing chamber has a pestle therein. 3. The capsule of claim 2, wherein said wall means are defined by first and second cylindrical walls, the former surrounding the latter for defining said mercury chamber as space between said walls therebetween, said valve means being in the form of a resilient portion of said second wall, said resilient portion being so located that if said capsule be shaken along its length, and there be said quantity of mercury in said space between said walls, said mercury will be propelled back and forth therein and strike said resilient portion and by its inertial force open said valve means and pass therethrough into the space in said second wall. 4. The capsule of claim 3, wherein said mixing chamber has a pestle therein. 5. The capsule of claim 4 wherein said valve means opens by deflecting said resilient portion away from said first wall and closes by deflecting said resilient portion back to said first wall. 6. The capsule of claim 5, wherein said mixing chamber has a pestle therein. 7. A capsule consisting of a first and second section, said capsule having a first chamber therein for containing a given quantity of alloy and being shaped and dimensions such that if a suitable quantity of mercury be introduced to said first chamber and the presence of said quantity of alloy, and the said capsule be shaken in a certain manner, and said mercury and alloy will be propelled back and forth between opposite ends of said first chamber, said first section having a bore therein, said second section having a second chamber, therein, for containing said quantity of mercury and being shaped and dimensions such that if said capsule be shaken in said manner, said quantity of mercury, if present in said second chamber, will be propelled back and forth between and against places on opposite ends of said second chamber, said second section also having said first chambers therein, said first chamber opening directly into said bore, said capsule having normally closed valve means for allowing said mercury to be propelled into said first chamber when said valve means is open, said valve means including one of said places; and said one of said places having means responsive to initial force of said mercury for opening said valve means when said mercury is present in said second chamber and is propelled against said one of said places when said capsule is shaken as aforesaid, said valve means including a portion of said first section and a portion of said second section sealing and engaging each other, and sealing said second chamber off from said bore, the second said portion having a surface providing said one of said places, and being responsive to said force such as to flexibly disengage from the first said portion so as to provide said valve means, said second chamber being annular and surrounds said first chamber so that a common wall separates said chambers, said common wall providing said second set portion. 8. The capsule of claim 7 wherein said bore has a frusto-conical section surrounding said common wall and a cylindrical section, said common wall goes through said frusto-conical section and sealingly engages the surface of said cylindrical section, said second said portion being surround with said frusto-conical section. 9. The capsule of claim 7 wherein alloy and mercury, respectively, are in said first and second chambers, and one of said chambers has a pestle therein. 10. The capsule of claim 7 wherein alloy and mercury, respectively, are in said first and second chambers, and said first chamber has a pestel therein.