Vacuum canister assembly

Abstract

A vacuum canister device includes a container, a cover for engaging onto the container, a casing having a lower and an upper peripheral panels, a partition disposed between the lower and the upper peripheral panels, a gasket, a housing having a lower peripheral flap engaged into the casing. A plug is slidably engaged in the housing and attached to the gasket. A barrel is engaged onto the housing, and a piston rod is slidably engaged into the barrel and includes a piston for drawing air and for vacuuming the container when the piston rod is moved out of the barrel. A cap may be selectively engaged onto the container, and may also be vacuumed by the cover and the barrel and the piston rod.

1 . A vacuum canister assembly comprising: 
 a container,    a cover including a pad attached to bottom thereof, for engaging onto said container, said cover including a peripheral wall, a bottom wall attached to said peripheral wall, a peripheral fence extended from said bottom wall to form an annular channel between said peripheral wall and said peripheral fence, and at least one aperture formed in said bottom wall,    a casing including a lower peripheral panel extended downwardly therefrom, an upper peripheral panel extended downwardly therefrom, a partition disposed between said lower and said upper peripheral panels and having a center hole and at least one orifice formed therein, said lower peripheral panel being engaged into said annular channel of said cover,    a gasket including an extension extended downwardly therefrom and slidably engaged through said center hole of said casing, and a bore formed therein,    a housing including a lower peripheral flap extended downwardly therefrom for engaging into said casing and for engaging with said upper peripheral panel of said casing, and including a chamber formed in said lower peripheral flap thereof and defined by a lower board, said lower board including a center hole and at least one perforation formed therein,    a plug including a plug body slidably engaged in said chamber of said housing, and having a peg extended downwardly therefrom and engaged into said bore of said gasket and attached to said gasket, to allow said gasket and said peg of said plug to be moved in concert with each other,    a barrel including a lower portion engaged onto said housing, and    a piston rod slidably engaged into said barrel and including a piston attached to bottom, for drawing air when said piston rod is moved along said barrel in a reciprocating action,    when said piston rod is moved into said barrel, said plug and said gasket being movable relative to said housing and said casing to force said gasket to engage onto said partition of said casing, and to block said center hole and said at least one orifice of said casing, and to block said at least one aperture of said bottom wall of said cover, and to prevent air from being pumped into said container via said cover, and    when said piston rod is pulled outwardly relative to said barrel, said plug and said gasket being drawn and moved relative to said housing and said casing, to disengage said gasket from said partition of said casing, to open said center hole and said at least one orifice of said casing, and also to open said at least one aperture of said bottom wall of said cover, to allow air to be pumped from said container out through said cover.    
   
   
       2 . The vacuum canister assembly as claimed in  claim 1  further comprising a cap for engaging onto said container, and said cover being engageable onto said cap for vacuuming said cap.  
   
   
       3 . The vacuum canister assembly as claimed in  claim 1 , wherein said plug includes at least one latch extended from said peg thereof, to engage with said gasket, and to secure said gasket to said peg of said plug.  
   
   
       4 . The vacuum canister assembly as claimed in  claim 1  further comprising a sleeve having an outer peripheral plate extended downwardly from an upper plate for engaging onto said container, and having an inner peripheral plate extended downwardly from said upper plate, to define a bore therein and to engage into said container, and said cover including a cylindrical member extended downwardly therefrom and engaged into said bore of said sleeve.  
   
   
       5 . The vacuum canister assembly as claimed in  claim 4 , wherein said sleeve includes at least one peripheral rib extended upwardly from said upper plate, said bottom wall of said cover includes at least one peripheral slot formed therein to receive said at least one peripheral rib of said sleeve.