Vacuumizing apparatus

Claim 2

A vacuumizing apparatus comprising a first vacuum chamber adapted to be connected to a source of vacuum, a conduit extending into said first vacuum chamber, a port opening into said conduit from said first vacuum chamber, a slide slidably mounted on said conduit, said slide substantially closing said port, a second vacuum chamber, a valve opening connecting said first vacuum chamber to said second vacuum chamber, a valve closure member for closing said valve opening connected to said conduit, a releasable engaging means for engaging said slide with said conduit for movement of said conduit by said slide to open said valve closure member from said valve opening, said slide being movable on said conduit to open said port and to engage said engaging means.

Claim 3

The vacuumizing apparatus of claim 1 wherein said second vacuum chamber has a cylindrical portion, a piston in said cylindrical portion, said piston mounted exteriorly of said second vacuum chamber whereby said second vacuum chamber moves over said piston when said valve closure member is opened from said valve opening, an extension on said conduit extending through said valve opening into said cylindrical portion of said second vacuum chamber adjacent to said piston, said conduit being carried by said cylindrical portion of said second vacuum chamber and said conduit extension being engaged by said piston when said cylindrical portion has moved fully to the vacuum position holding said conduit in a position maintaining said valve closure member away from said valve opening.

Claim 4

The vacuum apparatus of claim 2 wherein said apparatus includes a seat adjacent to said valve opening said in said second vacuum chamber a biasing means engaged on said seat and connected to said extension and constituting the only means securing said conduit in position whereby said conduit has limited free alignment movement relative to the remainder of said vacuum apparatus.

Claim 5

A vacuumizing apparatus comprising a first vacuum chamber, said first vacuum chamber incluDing a first tubular cylinder, a spring retaining seat on the inside of said first cylinder at its lower end, a bore entering the lower end of said first vacuum chamber cylinder and a first seal seat in said bore; a first seal on said first seal seat; a conduit extending axially through said first cylinder, said conduit including a cylindrical suction tube section and a closed cylindrical solid extension of smaller circumference than said suction tube section centered with respect thereto and projecting thereabove; a second seal seat formed by the offset of said extension inwardly from the outer edges of said suction tube section; a second seal on said second seal seat; said suction tube section projecting below said first cylinder and including a nozzle region at its lower end, a projecting section on the outer surface of said suction tube section spaced above said nozzle region and projecting beyond the outer circumference of said cylindrical suction tube section and a port opening through the side of said suction tube section above said projecting section and below said extension; a slide slidably mounted on said suction tube section and having a first bore sized to receive said suction tube section axially therein for slidable movement thereon, said slide extending through said first vacuum chamber bore into and extending below said first cylinder and forming with the first seal a leak free sliding seal; a hand grip formed around the lower end of said slide and positioned below said first cylinder, said hand grip having an enlarged bore at least a portion of which is larger than the bore of said slide, said enlarged bore encompassing said projecting section of said suction tube section; an internal shoulder formed by the offset of the enlarged bore from the first bore, said shoulder engageable with said projecting section of said suction tube section; a slide projecting section extending beyond the outer surface of said slide inside said first tubular cylinder; a spring retaining seat on said slide projecting section; a helical spring, said spring compressively engaged between said spring retaining seat on the inside of said first cylinder and said spring retaining seat on said slide; a support bridge, said support bridge positioned at the upper end of said first vacuum chamber, a support bore through said support bridge, said extension of said conduit passing through said support bore and said first seal engagable with aid support bridge; a third seal seat formed on the lower face of said support bridge; a third seal on said third seal seat; a helical spring surrounding said extension of said conduit above said support bridge; a spring retaining member connected to said extension above said helical spring; said second vacuum chamber including a second tubular cylinder and a piston; and means connecting said first cylinder and said second cylinder together.

Claim 6

A vacuumizing apparatus comprising a first vacuum chamber, said first vacuum chamber incluDing a first tubular cylinder, a spring retaining seat on the inside of said first cylinder at its lower end, a bore entering the lower end of said first vacuum chamber cylinder and a first seal seat in said bore; a first seal on said first seal seat; a conduit extending axially through said first cylinder, said conduit including a cylindrical suction tube section and a closed cylindrical solid extension of smaller circumference than said suction tube section centered with respect thereto and projecting thereabove; a second seal seat formed by the offset of said extension inwardly from the outer edges of said suction tube section; a second seal on said second seal seat; said suction tube section projecting below said first cylinder and including a nozzle region at its lower end, a projecting section on the outer surface of said suction tube section spaced above said nozzle region and projecting beyond the outer circumference of said cylindrical suction tube section and a port opening through the side of said suction tube section above said projecting section and below said extension; a slide slidably mounted on said suction tube section and having a first bore sized to receive said suction tube section axially therein for slidable movement thereon, said slide extending through said first vacuum chamber bore into and extending below said first cylinder and forming with the first seal a leak free sliding seal; a hand grip formed around the lower end of said slide and positioned below said first cylinder, said hand grip having an enlarged bore at least a portion of which is larger than the bore of said slide, said enlarged bore encompassing said projecting section of said suction tube section; an internal shoulder formed by the offset of the enlarged bore from the first bore, said shoulder engageable with said projecting section of said suction tube section; a slide projecting section extending beyond the outer surface of said slide inside said first tubular cylinder; a spring retaining seat on said slide projecting section; a helical spring, said spring compressively engaged between said spring retaining seat on the inside of said first cylinder and said spring retaining seat on said slide; a support bridge, said support bridge positioned at the upper end of said first vacuum chamber, a support bore through said support bridge, said extension of said conduit passing through said support bore and said first seal engagable with aid support bridge; a third seal seat formed on the lower face of said support bridge; a third seal on said third seal seat; a helical spring surrounding said extension of said conduit above said support bridge; a spring retaining member connected to said extension above said helical spring; said second vacuum chamber including a second tubular cylinder and a piston; and means connecting said first cylinder and said second cylinder together.

Claim 7

The vacuumizing apparatus of claim 4 wherein said means connecting said first cylinder and said second cylinder together include an enlarged flange at the top of said first cylinder, a reduced flange area at the bottom of said second cylinder, a quick clamp, said quick clamp engaged on said enlarged flange at the top of said first cylinder and said reduced flange area at the bottom of said second cylinder and clamping them together; said piston includes a piston shaft; a terminal end on said piston shaft exposed below said piston and aligned for engagement with said extension of said axial suction tube, the extension of said axial suction tube projecting into the cylindrical second cylinder a sufficient distance to be engaged by said terminal end on said piston shaft; and said support bridge including a disc region engaged in said enlarged flange at the top of said first cylinder and clamped therein by its engagement by said reduced flange area at the bottom of said second cylinder.

Claim 8

The vacuumizing apparatus of claim 4 wherein said first, second and third seals are O-rings.

Claim 9

A vacuumizing apparatus comprisIng a vacuum nozzle assembly which includes a vacuum chamber adapted to be connected to a source of vacuum, a conduit having a nozzle portion and an inner portion extending into said vacuum chamber, said vacuum conduit having an opening therein communicable with said vacuum chamber, a seat with a hole therethrough in said vacuumizing apparatus, the inner portion of said vacuum conduit passing through said hole, an alignment adjusting means on the side of said seat opposite the nozzle portion of said conduit connecting the inner portion of said conduit to said vacuum chamber for limited free movement, said alignment adjusting means constituting the only means securing said conduit in position.

Claim 10

A vacuumizing apparatus comprisIng a vacuum nozzle assembly which includes a vacuum chamber adapted to be connected to a source of vacuum, a conduit having a nozzle portion and an inner portion extending into said vacuum chamber, said vacuum conduit having an opening therein communicable with said vacuum chamber, a seat with a hole therethrough in said vacuumizing apparatus, the inner portion of said vacuum conduit passing through said hole, an alignment adjusting means on the side of said seat opposite the nozzle portion of said conduit connecting the inner portion of said conduit to said vacuum chamber for limited free movement, said alignment adjusting means constituting the only means securing said conduit in position.

Claim 11

The vacuumizing apparatus of claim 7 wherein said apparatus includes a vacuum operated lift mechanism connected to the vacuum nozzle assembly for lifting said assembly, the lift mechanism including a second vacuum chamber, a slide member slidably mounted on said conduit, said slide substantially closing said opening into said vacuum conduit, a valve opening connecting said first vacuum chamber to said second vacuum chamber, a valve closure means carried by said conduit for closing said valve opening, an engaging means for engaging said slide with said conduit for movement of said conduit by said slide to remove said valve closure means from said valve opening, said slide member being movable on said conduit to open said opening into said vacuum conduit and to engage said engaging means.

Claim 12

The vacuumizing apparatus of claim 8 wherein said second vacuum chamber includes a cylindrical portion and a piston in said cylindrical portion, said piston mounted exteriorly of said second vacuum chamber whereby said second vacuum chamber moves over said piston when said closure member is opened from said valve opening; wherein said conduit includes an extension said extension extending through said valve opening into said cylindrical portion of said second vacuum chamber adjacent to said piston, said conduit carried by said cylindrical portion of said second vacuum chamber and engaging said extension of said conduit with said piston when said cylindrical portion has moved fully to the vacuum lift position holding said conduit in a position maintaining said valve closure member opened from said valve opening, and wherein a valve seat surrounds said valve opening, a second valve closure member is carried by said slide and closes with said valve seat at least substantially shutting off the vacuum to said valve opening and said opening into said conduit.

Claim 15

The method of claim 10 wherein the bag is initially secured to the lower end of said apparatus and encloses said nozzle and after opening the second valve and before closing the second valve the neck of the bag is sealed.