Disposable dust containers for suction cleaners

Claim 2

A disposable dust container for a suction cleaner, said container comprising a bag of pliable porous sheet material pervious to air and impervious to dust particles, said bag including a pair of opposing rectangular first sidewalls, a pair of opposing rectangular second sidewalls extending between said first sidewalls and joined to the latter along the longitudinal margins thereof, and rectangular planar end walls at both ends of the bag and each being joined, at its periphery, to said first and second sidewalls to provide the bag, when expanded, with the form of a cuboid, said bag initially being in a folded, flat condition in which each of said second sidewalls is creased inwardly to dispose said first sidewalls against each other with said creased second sidewalls therebetween and each of said first sidewalls is folded back upon itself and cooperates with creases in said second sidewalls to dispose said rectangular planar end walls flat against said first sidewalls at opposite end portions of the flattened bag, one of said first sidewalls and end walls having an inlet opening therein.

Claim 3

A disposable dust container for a suction cleaner according to claim 1, in which said one of said first sidewalls and end walls has slits therein adapted to be expanded by an inlet for dust-laden air to constitute said opening for the latter into the bag.

Claim 4

A disposable dust container for a suction cleaner according to claim 2, in which a flat reinforcing member is secured to the outer surface of said one wall having said slits therein, and said reinforcing member has an opening exposing said slits.

Claim 5

A disposable dust container for a suction cleaner according to claim 1, in which, in said folded, flat condition, said rectangular planar end walls are at opposite sides of the flattened bag.

Claim 6

A disposable dust container for a suction cleaner according to claim 4, in which said one of said first sidewalls and end walls has slits therein adapted to be expanded by an inlet for dust-laden air to constitute said opening for the latter into the bag.

Claim 7

A disposable dust container for a suction cleaner according to claim 5, in which said one wall is one of said first sidewalls and said slits are located in a portion of said one first sidewall remote from the location where the latter is folded back upon itself.

Claim 8

A disposable dust container for a suction cleaner according to claim 5, in which each of said second sidewalls is creased inwardly along a central longitudinal fold line and along fold lines that diverge from each end of said longitudinal fold line to corners of the adjacent rectangular planar end wall, one of said first sidewalls is folded back upon itself about a lateral fold line that is at a distance from one end of said one first sidewall substantially equal to one-half the width of the adjacent planar end wall, and the other of said first sidewalls is also folded back upon itself about a lateral fold line that is at a distance from the other end of said other first sidewall substantially equal to the width of said other end wall.

Claim 9

A disposable dust container for a suction cleaner, said container comprising a folded bag of pliable porous sheet material pervious to air and impervious to dust particles, said bag including a pair of opposing rectangular first sidewalls, a pair of opposing rectangular second sidewalls extending between said first walls and joined to the lAtter along the longitudinal margins thereof, and rectangular planar end walls at both ends of the bag and each being joined, at its periphery, to said first and second sidewalls, each of said second sidewalls being creased inwardly along a central, longitudinal folded line and along fold lines that diverge from each end of said longitudinal fold line to corners of the adjacent rectangular planar end wall, one of said first sidewalls being folded back upon itself about a lateral fold line that is at a distance from one end of said one first sidewall substantially equal to one-half the width of the adjacent end wall, the other of said first sidewalls being also folded back upon itself about a lateral fold line that is at a distance from the other end of said other first sidewall substantially equal to one-half the width of the end wall adjacent thereto, whereby, said first sidewalls lay flat against each other with said second sidewalls creased therebetween and with said planar end walls laying flat against said first sidewalls at opposite end portions and opposite sides of the folded bag, and an opening being provided through one of said first sidewalls and end walls for admitting dust-laden air to the interior of said bag when suction is applied to the exterior of the bag, which suction is effective to unfold said first and second sidewalls and thereby expand said bag substantially to the form of a cuboid.

Claim 10

A disposable dust container for a suction cleaner, said container comprising a folded bag of pliable porous sheet material pervious to air and impervious to dust particles, said bag including a pair of opposing rectangular first sidewalls, a pair of opposing rectangular second sidewalls extending between said first walls and joined to the lAtter along the longitudinal margins thereof, and rectangular planar end walls at both ends of the bag and each being joined, at its periphery, to said first and second sidewalls, each of said second sidewalls being creased inwardly along a central, longitudinal folded line and along fold lines that diverge from each end of said longitudinal fold line to corners of the adjacent rectangular planar end wall, one of said first sidewalls being folded back upon itself about a lateral fold line that is at a distance from one end of said one first sidewall substantially equal to one-half the width of the adjacent end wall, the other of said first sidewalls being also folded back upon itself about a lateral fold line that is at a distance from the other end of said other first sidewall substantially equal to one-half the width of the end wall adjacent thereto, whereby, said first sidewalls lay flat against each other with said second sidewalls creased therebetween and with said planar end walls laying flat against said first sidewalls at opposite end portions and opposite sides of the folded bag, and an opening being provided through one of said first sidewalls and end walls for admitting dust-laden air to the interior of said bag when suction is applied to the exterior of the bag, which suction is effective to unfold said first and second sidewalls and thereby expand said bag substantially to the form of a cuboid.