US3662926A — Valve and bag assembly for pressure dispensing

Claim 1

Independent Claim 255 words

In that type of pressure dispensing valve assembly which includes a container top member having a flat undersurface with a central pierce, an elastic seal having a tubular portion extending through the pierce, a retaining collar portion extending thereabove, and a seal seat portion therebeneath, the seal seat portion having a radially enlarged flexible flange presented against the undersurface of the container top member, together with a valving member normally seated against the seal seat portion and displaceable therefrom, the improvement comprising a bag assembly depending from and supported by the flexible flange of the seal, said bag assembly including a bag member having a flexible wall terminating upwardly in a margin and having a bottom opening, whereby to be filled in inverted position after assembly, and a molded bag-mounting ring member including a downwardly presented tubular cuff portion of such diameter as to receive the top margin of the bag member, whereby said bag member margin may be mounted and sealed thereto, and an upper, radially inward extending suspension rim portion having a juncture with the upper end of the cuff portion, the juncture having an inner radius substantially equal to the radius of the outer edge of the flexible flange of the seal, whereby prior to mounting the bag member, the ring member may be assembled as part of the valve assembly, with its suspension portion interposed between the container top member and the radially outer part of the flexible flange of the seal, thereby deflecting said radially outer flange part elastically downward.

Claim 2

Dependent Claim 255 words

In that type of pressure dispensing valve assembly which includes a container top member having a flat undersurface with a central pierce, an elastic seal having a tubular portion extending through the pierce, a retaining collar portion extending thereabove, and a seal seat portion therebeneath, the seal seat portion having a radially enlarged flexible flange presented against the undersurface of the container top member, together with a valving member normally seated against the seal seat portion and displaceable therefrom, the improvement comprising a bag assembly depending from and supported by the flexible flange of the seal, said bag assembly including a bag member having a flexible wall terminating upwardly in a margin and having a bottom opening, whereby to be filled in inverted position after assembly, and a molded bag-mounting ring member including a downwardly presented tubular cuff portion of such diameter as to receive the top margin of the bag member, whereby said bag member margin may be mounted and sealed thereto, and an upper, radially inward extending suspension rim portion having a juncture with the upper end of the cuff portion, the juncture having an inner radius substantially equal to the radius of the outer edge of the flexible flange of the seal, whereby prior to mounting the bag member, the ring member may be assembled as part of the valve assembly, with its suspension portion interposed between the container top member and the radially outer part of the flexible flange of the seal, thereby deflecting said radially outer flange part elastically downward.

Claim 3

Dependent Claim 35 words

The improvement as defined in claim 1, wherein the outer edge of the flange of the elastic seal is elastically fitted into said juncture, whereby to facilitate pre-assembly of the ring member with the seal.

Claim 4

Dependent Claim 66 words

The improvement as defined in claim 1, wherein the inner tubular surface of the cuff portion has, below said juncture at a spacing corresponding to the thickness of the edge of the seal flange, a seal-retention inward projection whose radial spacing from center is less than that of the outer edge of the seal flange, whereby to facilitate pre-assembly of the ring member with the seal.

Claim 5

Dependent Claim 43 words

The improvemeNt as defined in claim 1, in which the thickness of the suspension rim portion of the ring member tapers from said juncture to a thinned inner edge, whereby to fit the configuration of the downwardly deflected flange part of the seal.

Claim 6

Dependent Claim 49 words

The improvement as defined in claim 4, in which the radial extent of the suspension rim portion of the ring member from said juncture to the thinned edge does not exceed the radial extent of that part of the seal flange inwardly thereof presented against the container top member.

Claim 7

Dependent Claim 215 words

For use within a dispensing container whose contents include a pressurizing gas, a valve and inner container assembly adapted for containing and dispensing a product without intermixture of such gas, comprising a container top member having a substantially flat undersurface with a central pierce, an elastic seal having a tubular portion extending through the pierce, a retaining collar portion thereabove, and a seal seat portion therebeneath, the seal seat portion having a radially enlarged flexible flange presented against the undersurface of the container top member, and a valving member normally seated against the seal seat portion and displaceable therefrom, together with an inner container whose volume may be reduced by gas pressure about it within such dispensing container, said inner container including a wall terminating upwardly in an upper margin, an upper radially inward extending suspension rim joined to the upper margin of the wall and at a juncture having an inner radius sufficient to accommodate the radially enlarged flexible flange of the seal, whereby the rim may be assembled interposed between the undersurface of such container top member and the radially outer part of the flexible flange of the seal, the wall of the inner container further having a bottom margin and means thereat to seal off from pressure thereabout within such dispensing container.

Claim 8

Dependent Claim 215 words

For use within a dispensing container whose contents include a pressurizing gas, a valve and inner container assembly adapted for containing and dispensing a product without intermixture of such gas, comprising a container top member having a substantially flat undersurface with a central pierce, an elastic seal having a tubular portion extending through the pierce, a retaining collar portion thereabove, and a seal seat portion therebeneath, the seal seat portion having a radially enlarged flexible flange presented against the undersurface of the container top member, and a valving member normally seated against the seal seat portion and displaceable therefrom, together with an inner container whose volume may be reduced by gas pressure about it within such dispensing container, said inner container including a wall terminating upwardly in an upper margin, an upper radially inward extending suspension rim joined to the upper margin of the wall and at a juncture having an inner radius sufficient to accommodate the radially enlarged flexible flange of the seal, whereby the rim may be assembled interposed between the undersurface of such container top member and the radially outer part of the flexible flange of the seal, the wall of the inner container further having a bottom margin and means thereat to seal off from pressure thereabout within such dispensing container.

Claim 9

Dependent Claim 70 words

A valve and inner container assembly as defined in claim 6, wherein the suspension rim is a portion of a ring member to which the upper margin of the inner container wall is sealed, and said suspension rim portion tapers inward radially to a thinned inner edge, whereby to fit the configuration of the radially outer part of the flexible flange of the seal when deflected downwardly on such assembly.

Claim 10

Dependent Claim 37 words

A valve and inner container assembly as defined in claim 6, wherein the inner container is a flexible bag, and the means at its bottom margin to seal off from pressure thereabout is a heat formed seal.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1975-05-16	1975-11-15	1976-05-16	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1979-05-16	1979-11-15	1980-05-16	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1983-05-16	1983-11-15	1984-05-16	$7700.00	Window Closed / Lapsed

Valve and bag assembly for pressure dispensing

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