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EP0321279A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Dispensing device

Assignee: Essex Chemical Corp
•
Filing: 1988-12-16
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Granted: —
•
Expires: 2008-12-16
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Abstract

Abstract A dispensing device for a bag (4) containing a liquid, made of flexible material and forming upper and lower walls (4a and 4b) through which holes are formed for receiving the device has a tubular lower part (5) with a top flange (6) which is sealed to the inside of the lower wall (4a) and depends through the hole in the lower wall. A tubular upper part (12) has a top flange (14) sealed to the inside of the upper wall (4b) and depends through the hole in that wall and is telescoped inside the lower part (5) so as to move up and down in the lower part (5). The top of the upper part (12) forms a piston such as a collapsible dome extending upwardly through the hole in the upper wall and exposed on the outside of the upper wall and therefore exposed on the outside of the bag (4). The lower part (5) has a lower end having a self-closing valve (8) and has at least one side port (15) normally open to a space between the flanges (6 and 14) and therefore between the bag walls (4a and 4b). The lower part (5) has one or more ports normally open to that space and through which liquid contained by the bag (4) can flow into the interior of the device. The upper and lower parts (12 and 5) are elastically or spring biased apart and when the piston is pressed the upper part (12) moves down in to the lower part (5) until stopped by interengaging of the two flanges (6 and 14), forcing open a self-closing valve (8) in the bottom end of the lower part (5), so that the liquid in the bag is dispensed.

Inventors

  • 👤 Stanley L. Roggenburg
  • 👤 Robert H. Laauwe
  • 👤 Michael E. Tully
  • 👤 John L. Polite

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 20:44
CPC Classifications
A; A47; A47K; A47K5/00; A47K5/06; A47K5/12; A47K5/1202; A47K5/1208; A47K5/122

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 214 words
A dispensing device for a bag made of flexible material and forming upper and lower walls through which mutually registered holes are formed for receiving the device, the device comprising a tubular lower part having a top forming an outward flange which is sealed to the inside of the lower wall with the lower part depending through the hole in the lower wall, and a tubular upper part having a top forming an outwardly flange which is sealed to the inside of the upper wall and depending through the hole in the upper wall and telescoped inside the lower part and movable up and down therein, the top of the upper part forming a piston closing the top and accessible on the outside of the upper wall, spring means for elastically biasing the parts apart from each other so that normally there is a space between the flanges, the lower part having a lower end and a self-closing valve normally closing the lower end of the lower part, the lower part having at least one side port normally open to said space so that liquid in the bag can flow into the parts, movement of the upper part into the lower part moving the flanges into intercontact and sealing the space between the flanges.
Claim 2
Dependent Claim 214 words
A dispensing device for a bag made of flexible material and forming upper and lower walls through which mutually registered holes are formed for receiving the device, the device comprising a tubular lower part having a top forming an outward flange which is sealed to the inside of the lower wall with the lower part depending through the hole in the lower wall, and a tubular upper part having a top forming an outwardly flange which is sealed to the inside of the upper wall and depending through the hole in the upper wall and telescoped inside the lower part and movable up and down therein, the top of the upper part forming a piston closing the top and accessible on the outside of the upper wall, spring means for elastically biasing the parts apart from each other so that normally there is a space between the flanges, the lower part having a lower end and a self-closing valve normally closing the lower end of the lower part, the lower part having at least one side port normally open to said space so that liquid in the bag can flow into the parts, movement of the upper part into the lower part moving the flanges into intercontact and sealing the space between the flanges.
Claim 3
Dependent Claim 17 words
The device of claim 1 in which said upper and lower parts each comprise a plastic molding.
Claim 4
Dependent Claim 47 words
The device of Claim 1 or Claim 2 in which a spider has a ring positioned between said parts and said spring means comprises an annular series of leafsprings formed by the ring of the spider and which bear against the bottom periphery of the upper part.
Claim 5
Independent Claim 37 words
The device of any preceeding claim in which said spring means comprises an annular series of springs formed by the flange of one of said parts and which bear against the flange of the other said parts.
Claim 6
Independent Claim 45 words
The device of any preceeding claim in which said piston is in the form of an elastically collapsible dome closing the top of said upper part and extending upwardly through the hole in the upper wall and exposed on the outside of the upper wall.
Claim 7
Independent Claim 43 words
The device of any preceeding claim in which said piston is in the form of a rigid wall substantially on the same level as the top of the upper tubular part and which is rigidly connected to the top of the upper part.

References Cited (Backward Citations)

US4570827A Cited
EP0207279A1 Cited

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