Drink bladder with magnetic closure device

Patent metadata

Field	Value
Publication number	US-12357077-B2
Application number	US-202218032024-A
Country	US
Kind code	B2
Filing date	Mar 3, 2022
Priority date	Mar 23, 2021
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

Provided is a drinking bladder, including a hollow body for receiving a liquid, which includes a closure device with a closure compound. The closure compound can be adjusted from a release position, in which the first and second closing portions can be properly separated from each other against a magnetic force applied by first and second closure parts to clear an opening on the hollow body, by folding or rolling the first and second closing portions at least once into a closing position. The closure compound disposed in its closing position is secured via a securing mechanism.

First claim

The invention claimed is:

1. A drinking bladder, comprising a hollow body for receiving a liquid, wherein
the hollow body has at least one flexible wall and at least one port for connection to a drinking tube,
the liquid can be filled into the hollow body via an opening that is formed between a first closing portion and a second closing portion and can be closed by a closure device of the drinking bladder,
the closure device includes a first closure part on the first closing portion and a second closure part on the second closing portion,
the first closure part has a first strip body longitudinally extended along a transverse direction,
the second closure part has a second strip body longitudinally extended along the transverse direction,
the first closure part and the second closure part cooperate in a magnetically attracting manner in such a way that in a closed position of the closure device the first closing portion and the second closing portion rest against each other and form a closure compound with the first and second closure parts,
the closure compound can be adjusted from a release position, in which the first and second closing portions can be properly separated from each other against a magnetic force applied by the first and second closure parts to clear the opening, by folding the first and the second closing portions at least once into a closing position or rolling the first and second closing portions into the closing position, and
the closure compound disposed in its closing position is secured via a securing mechanism, wherein the closure device comprises at least one magnetic element by action of which at least one securing part of the securing mechanism is positioned in a securing position in which the at least one securing part blocks the closure compound against an adjustment into the release position via a form fit.

2. The drinking bladder according to claim 1 , wherein via the securing mechanism the closure compound disposed in its closing position is secured against a removal of the closure compound from the closing position due to an increased internal pressure in the hollow body.

3. The drinking bladder, according to claim 2 , wherein the first strip body and the second strip body have two longitudinal ends and, in the closed position, the securing mechanism is configured to
counteract a lifting force acting on the first strip body and the second strip body at the longitudinal ends and resulting from the increased internal pressure, by action of which mutually opposite longitudinal ends of the first and second strip bodies strive to move away from each other, and/or
counteract a shear force resulting from the increased internal pressure, which acts in a middle area of the first strip body and the second strip body at the closure device in a plane extending parallel to the first and second closing portions.

4. The drinking bladder according to claim 1 , wherein via the securing mechanism a connection between the closure compound and the wall connected to the first or second closing portion is provided when the closure compound is disposed in the closing position.

5. The drinking bladder according to claim 4 , wherein an additional securing element is provided on the closure compound, to which at least one securing part of the securing mechanism is fixed at a distance to the first and second closure parts, and wherein the securing part provided on the securing element forms a first securing part, which in the closing position of the closure compound is positively connected to a second securing part that is provided on the wall.

6. The drinking bladder according to claim 1 , wherein the closure device comprises a third closure part on the wall, and in closing position the closure compound and the third closure part cooperate in a magnetically attracting manner in order to hold the closure compound in the closing position.

7. The drinking bladder according to claim 6 , wherein via the securing mechanism an additional connection between the closure compound, in particular the first or second closure part, and the third closure part is provided when the closure compound is disposed in the closing position.

8. The drinking bladder according to claim 1 , wherein the securing mechanism includes at least one securing part which secures the closure compound in the closing position via a form fit.

9. The drinking bladder according to claim 8 , wherein the securing mechanism includes at least two securing parts which in the closing position of the closure compound positively cooperate with each other in order to secure the closure compound in the closing position.

10. The drinking bladder according to claim 1 , wherein on transfer of the closure compound into its closing position the at least one securing part is also adjusted into the securing position by action of the at least one magnetic element.

11. The drinking bladder according to claim 1 , wherein the at least one securing part can be adjusted into the securing position only after transfer of the closure compound into its closing position.

12. The drinking bladder according to claim 1 , wherein an additional securing element is provided on the closure compound, to which at least one securing part of the securing mechanism is fixed at a distance to the first and second closure parts.

13. The drinking bladder according to claim 1 , wherein after transfer of the closure compound into its closing position at least one securing part of the securing mechanism can be adjusted into a securing position by pivoting about at least one joint axis, in which securing position the at least one securing part secures the closure compound disposed in its closing position.

14. The drinking bladder according to claim 13 , wherein
the closure compound can be transferred from the release position into the closing position by folding at least once about a pivot axis parallel to a first spatial direction or rolling the closure compound about a pivot axis parallel to the first spatial direction,
a magnetic force for holding the closure compound in its closing position with respect to a third closure part acts along a spatial axis that is parallel to a second spatial direction extending perpendicularly to the first spatial direction, and
via the securing mechanism the closure compound is secured against removal from the third closure part by action of a shear force which points in a third spatial direction that is both perpendicular to the first spatial direction and perpendicular to the second spatial direction
the joint axis extends parallel to the third spatial direction.

15. The drinking bladder according to claim 14 , wherein the securing mechanism includes at least one securing part which is disposed in an intermediate position when the closure compound reaches the closing position, and the securing part can be displaced from the intermediate position into an engagement position in which the securing part blocks the closure compound against an adjustment along the third spatial direction.

16. The drinking bladder according to claim 15 , wherein in the engagement position the at least one securing part blocks the closure compound against an adjustment along the third spatial direction and against an adjustment along the second spatial direction.

17. The drinking bladder according to claim 16 , wherein the closure device comprises at least one magnetic element by action of which the at least one securing part of the securing mechanism is automatically positioned in the intermediate position when the closure compound is tran

Assignees

• Fidlock Gmbh

Inventors

• Naftali Philip
• Moalem Izik
• Botkus Breido
• Fiedler Joachim
• Knorr Holger
• Severain Timo
• Aderhold Joschan
• Richter Friedemann

Classifications

• B65D2313/04

  of magnetic type · CPC title

• A45F3/20 Primary

  of flexible material; Collapsible or stackable cups · CPC title

• B65D85/72

  for edible or potable liquids, semiliquids, or plastic or pasty materials · CPC title

• B65D33/1608

  Integral flaps for tying above the bag · CPC title

• B65D33/24 Primary

  using self-locking integral or attached closure elements, e.g. flaps (B65D33/25 takes precedence) · CPC title