Bladder type dispenser

Claim 2

In a pressurized apparatus including a container whose volume generally defines the volume of the fluid stored therein; said container having outlet means permitting discharge of the contained fluid, the improvement comprising: a. an elongate resilient bladder having wall means defining a fluid chamber interior of the bladder and a fluid outlet in fluid communication with said chamber and said container outlet means; b. an elongate rigid member within said container spaced from said container walls, and lying exterior of said bladder; and c. means for fixedly attaching respective ends of said bladder to the outlet means and the rigid member with surface contact therebetween over substantially the complete surface area of one side of said bladder to pretension said bladder to the extent of providing the sole pressurizing force for discharging the contained fluid when the bladder is in contracted condition.

Claim 3

The apparatus of claim 1 wherein said elongate rigid member comprises a longitudinally convex spatulate member.

Claim 4

Apparatus according to claim 2 wherein said bladder is pressed by means of a snap action fastener into a recess in the free end of said spatulate member.

Claim 5

The pressurized apparatus of claim 1 wherein said elongate member is longitudinally convex.

Claim 6

The pressurized apparatus of claim 4 wherein said bladder is stretched against said convex surface by attaching one end of said bladder to the end of said elongate member remote from said outlet means.

Claim 7

The pressurized apparatus of claim 5 wherein said bladder is blind at one end, has a tab extending from said blind end, and is attached to said elongate member by means of said tab.

Claim 8

The pressurized apparatus of claim 5 wherein said elongate member is rigidly mounted within said container.

Claim 9

The pressurized apparatus of claim 2 wherein said elongate member is flexibly mounted within said container in order to allow said member to adjust to the configuration of said container.

Claim 10

The apparatus of claim 1 wherein said elongate rigid member is a longitudinally bowed, generally spatulate member, said bladder being stretched against the longitudinally convex side of said member.

Claim 11

The apparatus of claim 9 wherein said spatulate member is rigidly mounted at one of its ends within said container.

Claim 12

The apparatus of claim 9 wherein said spatulate member is flexibly mounted at one of its ends in order to allow said body to adjust to the configuration of said container.

Claim 13

Apparatus according to claim 1 wherein said bladder contains a flexible, folded bag to serve as a liner for the fluid chamber of said bladder.

Claim 14

Apparatus according to claim 12 wherein said folded bag, when unfolded, is larger than said bladder in its contracted position.

Claim 15

Apparatus according to claim 13 wherein said bag is first folded back into itself so that the inner wall of its lower portion is adjacent to the inner wall of its upper portion and is then accordion folded so as to create radially extending pleats.

Claim 16

In a pressurized apparatus including outlet means permitting discharge of a contained fluid, the improvement comprising: a. a resilient bladder having wall means defining a fluid chamber interior of the bladder and an opening in communication with the interior of the bladder; b. a flexible bag for holding said fluid, said flexible bag positioned within said bladder, said bag Having a fluid outlet extending through the opening of said bladder and in fluid communication with said outlet means; c. an elongate rigid member lying exterior of said bladder; and d. means for fixedly attaching respective ends of said bladder to said outlet means and said rigid member with the bladder stretched longitudinally against said rigid member with surface contact therebetween over substantially the complete surface area of one side of said bladder to pretension said bladder to the extent of providing the sole pressurizing force for discharging the contained fluid when the bladder is in contracted condition.

Claim 17

In a pressurized apparatus including outlet means permitting discharge of a contained fluid, the improvement comprising: a. a resilient bladder having wall means defining a fluid chamber interior of the bladder and an opening in communication with the interior of the bladder; b. a flexible bag for holding said fluid, said flexible bag positioned within said bladder, said bag Having a fluid outlet extending through the opening of said bladder and in fluid communication with said outlet means; c. an elongate rigid member lying exterior of said bladder; and d. means for fixedly attaching respective ends of said bladder to said outlet means and said rigid member with the bladder stretched longitudinally against said rigid member with surface contact therebetween over substantially the complete surface area of one side of said bladder to pretension said bladder to the extent of providing the sole pressurizing force for discharging the contained fluid when the bladder is in contracted condition.

Claim 18

The capsule of claim 15 wherein said bag, bladder, and member are elongate, said bladder and bag being fixed relative to one end of said member, said bladder being additionally fixed relative to the opposite end of said member so as to be stretched longitudinally therealong.

Claim 19

The capsule of claim 16 wherein said bag, when filled, is larger than said bladder in its contracted position.