A dispensing container

Claim 2

A dispensing container for dispensing a product comprising: a hollow body having an outlet; means for controlling the opening and closing of the outlet; and a deformable member in the hollow body separating a product to be dispensed from the container and contained in a space between the inner surface of the hollow body and one side of the deformable member from a pressurized propellant gas contained in a space between the inner surface of the hollow body and an opposite side of the deformable member, the deformable member having a tubular side wall in which are arranged a plurality of endless peripheral lines each composed of a plurality of alternately disposed alike rectilinear first fold lines and alike rectilinear second fold lines, said first fold lines being longer than said second fold lines and the first and second fold lines of each peripheral line being symmetrically staggered in relation to those of the adjacent peripheral lines, each point between adjacent first and second fold lines of one peripheral line being joined to a complementary point between adjacent first and second fold lines of each adjacent peripheral line by a rectilinear third fold line whereby the first fold lines of each peripheral line and the second fold lines of the adjacent peripheral lines form with said third fold lines an array of alternately disposed trapeziums, said wall being folded about said first fold lines with said first fold lines disposed innermost and about said second and third fold lines with said second and third fold lines disposed outermost so that said deformable member is deformable in a generally axial direction of said tubular side wall by an accordion-like folding about said fold lines; whereby opening of the outlet permits the propellant gas to expand and to deform the deformable member which forces the product to discharge through the outlet.

Claim 3

A container according to claim 1, wherein the hollow body is generally cylindrical and the member is deformable along the length of the hollow body.

Claim 4

A container according to claim 1, wherein said deformable member is made of metal.

Claim 5

A dispensing container for dispensing a product comprising: a hollow cylindrical body having an outlet at one end and a base at the opposite end closing the body at said opposite end; means for controlling the opening and closing of the outlet; a hollow expansible member in the hollow body separating a product to be dispensed from the container and contained in a space between said one end of the hollow body and the expansible member from a pressurized propellant gas contained in a space between the base of the hollow body and the expansible member, the expansible member having a tubular side wall in which are arranged a plurality of endless peripheral lines each composed of a plurality of alternately disposed alike rectilinear first fold lines and alike rectilinear second fold lines, said first fold lines being longer than said second fold lines and the first and second fold lines of each peripheral line being symmetrically staggered in relation to those of the adjacent peripheral lines, each point between adjacent first and second fold lines of one peripheral line being joined to a complementary point between adjacent first and second fold lines of each adjacent peripheral line by a rectilinEar third fold line whereby the first fold lines of each peripheral line and the second fold lines of the adjacent peripheral lines form with said third fold lines an array of alternately disposed trapeziums, said wall being folded about said first fold lines with said first fold lines disposed innermost and about said second and third fold lines with said second and third fold lines disposed outermost so that said hollow member is expansible in a generally axial direction of said tubular side wall by an accordion-like folding about said fold lines; and means for anchoring one end of said side wall to the base of the hollow body; whereby opening up the outlet permits the propellant gas to enter into the interior of the hollow member to expand the hollow member which thereby forces the product to discharge through the outlet.

Claim 6

A dispensing container for dispensing a product comprising: a hollow cylindrical body having an outlet at one end and a base at the opposite end closing the body at said opposite end; means for controlling the opening and closing of the outlet; a hollow expansible member in the hollow body separating a product to be dispensed from the container and contained in a space between said one end of the hollow body and the expansible member from a pressurized propellant gas contained in a space between the base of the hollow body and the expansible member, the expansible member having a tubular side wall in which are arranged a plurality of endless peripheral lines each composed of a plurality of alternately disposed alike rectilinear first fold lines and alike rectilinear second fold lines, said first fold lines being longer than said second fold lines and the first and second fold lines of each peripheral line being symmetrically staggered in relation to those of the adjacent peripheral lines, each point between adjacent first and second fold lines of one peripheral line being joined to a complementary point between adjacent first and second fold lines of each adjacent peripheral line by a rectilinEar third fold line whereby the first fold lines of each peripheral line and the second fold lines of the adjacent peripheral lines form with said third fold lines an array of alternately disposed trapeziums, said wall being folded about said first fold lines with said first fold lines disposed innermost and about said second and third fold lines with said second and third fold lines disposed outermost so that said hollow member is expansible in a generally axial direction of said tubular side wall by an accordion-like folding about said fold lines; and means for anchoring one end of said side wall to the base of the hollow body; whereby opening up the outlet permits the propellant gas to enter into the interior of the hollow member to expand the hollow member which thereby forces the product to discharge through the outlet.

Claim 7

A dispensing container for dispensing a product comprising: a hollow cylindrical body having an outlet at one end and a base at the opposite end closing the body at said opposed end; means for controlling the opening and closing of the outlet; a hollow contractable member in the hollow body separating a product to be dispensed from the container and contained in a space between said one end of the hollow body and the contractable member from a pressurized propellant gas contained in a space between the base of the hollow body and the contractable member, the contractable member having a tubular side wall in which are arranged a plurality of endless peripheral lines each composed of a plurality of alternately disposed alike rectilinear first fold lines and alike rectilinear second fold lines, said first fold lines being longer than said second fold lines and the first and second fold lines of each peripheral line being symmetrically staggered in relation to those of the adjacent peripheral lines, each point between adjacent first and second fold lines of one peripheral line being joined to a complementary point between adjacent first and second fold lines of each adjacent peripheral line by a rectilinear third fold line whereby the first fold lines of each peripheral line and the second fold lines of the adjacent peripheral lines form with said third fold lines an array of alternately disposed trapeziums, said wall being folded about said first fold lines with said first fold lines disposed innermost and about said second and third fold lines with said second and third fold lines disposed outermost so that said hollow member is contractable in a generally axial direction of said tubular side wall by an accordion-like folding about said fold lines; and means for anchoring one end of said side wall to said one end of the hollow body; whereby opening of the outlet permits the propellant gas to contract the hollow member which thereby forces the produce to discharge through the outlet.

Claim 8

A dispensing container for dispensing a product comprising: a hollow cylindrical body having an outlet at one end and a base at the opposite end closing the body at said opposed end; means for controlling the opening and closing of the outlet; a hollow contractable member in the hollow body separating a product to be dispensed from the container and contained in a space between said one end of the hollow body and the contractable member from a pressurized propellant gas contained in a space between the base of the hollow body and the contractable member, the contractable member having a tubular side wall in which are arranged a plurality of endless peripheral lines each composed of a plurality of alternately disposed alike rectilinear first fold lines and alike rectilinear second fold lines, said first fold lines being longer than said second fold lines and the first and second fold lines of each peripheral line being symmetrically staggered in relation to those of the adjacent peripheral lines, each point between adjacent first and second fold lines of one peripheral line being joined to a complementary point between adjacent first and second fold lines of each adjacent peripheral line by a rectilinear third fold line whereby the first fold lines of each peripheral line and the second fold lines of the adjacent peripheral lines form with said third fold lines an array of alternately disposed trapeziums, said wall being folded about said first fold lines with said first fold lines disposed innermost and about said second and third fold lines with said second and third fold lines disposed outermost so that said hollow member is contractable in a generally axial direction of said tubular side wall by an accordion-like folding about said fold lines; and means for anchoring one end of said side wall to said one end of the hollow body; whereby opening of the outlet permits the propellant gas to contract the hollow member which thereby forces the produce to discharge through the outlet.