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Dental care unit

  • US 4,319,595 A
  • Filed: 01/30/1980
  • Issued: 03/16/1982
  • Est. Priority Date: 01/30/1980
  • Status: Expired due to Term
First Claim
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1. A dental care unit comprising:

  • a housing;

    a hollow base accommodated in said housing, said base including a plurality of containers therein for storing a plurality of liquids in said base;

    a plurality of dispenser control mechanisms on said base each being fluidly connected to an associated one of said containers for controlling the amount of liquid removed from said associated container, each control mechanism including a base housing, a fluid passage defined in said base having a first portion and a second portion, a dispensing passage defined in said base, a vent passage defined in said base, a dispensing piston located in said first portion, urging means biasing said dispensing piston into said upright portion, a vent control piston located in said vent passage and coupled to said dispensing piston, a stop mounted to abut said vent control piston to limit the travel of said pistons, seal means on said control mechanism piston, said control mechanism piston being movable from a first position wherein said seal means prevents fluid communication between said associated container and said fluid passage to a second position permitting such fluid communication, and means for moving said control mechanism piston;

    a mixing chamber defining means on said base having a mixture chamber fluidly connected to said dispensing passages of said dispenser control mechanisms to receive liquid therefrom, said mixing chamber defining means including a piston received in a piston bore which is fluidly connected to said mixing chamber and to atmosphere, stop means limiting the amount of movement of said mixing chamber piston, seal means on said piston, said mixing chamber piston being movable to a first position wherein said seal means prevents fluid communication between said mixing chamber and atmosphere to a second position permitting such fluid communication, and means for moving said mixing chamber piston;

    an inlet hose fluidly connected to one dispensing passage of said dispensing passages for conducting liquid thereoutof;

    whereby with said control mechanism pistons and said mixing chamber piston in said second positions fluids from containers associated with said control mechanisms flow from said containers to said mixing chamber and liquid conducted into said one dispensing passage flows into said mixing chamber to mix with said fluids to form a mixture, said mixture flowing out of said mixing chamber and into said outlet hose via said another dispensing passage, said control mechanism venting means controlling fluid flow into said fluid passage first portion and said mixing chamber piston controlling flow into said mixing chamber so that mixing of said fluid and said liquid is controlled;

    a chuck connected to said outlet hose, said chuck having a fluid passage therein which is fluidly connected to said outlet hose; and

    a plurality of different dental care instruments in said housing, each instrument performing a different dental function, and each instrument having means for attaching said each instrument to said chuck, each instrument having a fluid passage therein which is fluidly connected to said chuck fluid passage and liquid dispensing means for dispensing liquid into a user'"'"'s mouth.

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