Cartridge closure with opening and closing means

• US 20040134936A1
• Filed: 05/09/2003
• Published: 07/15/2004
• Est. Priority Date: 01/13/2003
• Status: Active Grant

• Current Assignee: Ritter GmbH (Avantor, Inc.)
• Original Assignee: Ritter GmbH (Avantor, Inc.)
• Inventors: Ritter, Frank Georg
• Granted Patent: US 6,834,782 B2
• Time in Patent Office: Days
• US Class Current: 222/325
• CPC Class Codes: B05C 17/00516 Shape or geometry of the outlet orifice or the outlet element
• CPC Class Codes: B05C 17/00596 The liquid or other fluent material being supplied from a rigid removable cartridge having no active dispensing means, i.e. the cartridge requiring cooperation with means of the handtool to expel the material
• CPC Class Codes: B65D 47/242 moving helically
• CPC Class Codes: B65D 47/243 moving linearly, i.e. without rotational motion

Abstract

In a cartridge closure with opening and closing means comprising a mouth piece with an open end and a closure part having a sleeve portion axially movably supported on the mouthpiece, a transverse wall is supported by support webs in axially spaced relationship from the open end of the mouthpiece and the closure part includes a neck portion of a smaller diameter than the sleeve portion with a transition area between the neck portion and the sleeve portion which includes a conical seal surface area which, in the closing position of the sleeve portion, sealingly engages a circumferential edge of the transverse wall.

Claims

1. A cartridge closure with opening and closing means comprising a mouthpiece (13) with an open end, a closure part (3) having a sleeve portion (33) axially movably supported on said mouthpiece (13) between a closing position and an opening position, said mouthpiece (13) having a transverse wall (14) which is supported in spaced relationship from said open end of said mouthpiece (13) by support webs (15) extending between the open end of said mouthpiece and said transverse wall (14) and said closure part (3) including a neck portion (31) of a smaller diameter than said sleeve portion (33) with a transition area between the neck portion (31) and the sleeve portion (33) including a conical seal surface area (34) which, in the closing position of the sleeve portion (33) sealingly engages a circumferential edge of said transverse wall (14).

2. A cartridge closure according to claim 1, wherein said mouthpiece (13) is formed integrally with a front wall (11) of said cartridge.

3. A cartridge closure according to claim 1, wherein said mouthpiece (13) includes at its open end an annular shoulder (16) which, in the closed position of said closure part (3), sealingly engages the transition area between the neck portion (31) and the sleeve portion (33) of the closure part (3).

4. A cartridge closure according to claim 1, wherein said mouthpiece (13) and said sleeve portion (33) on which the mouthpiece (13) is axially movably supported includes shoulder structures (35, 16) for limiting the axial movement of said closure element (3).

5. A cartridge closure according to claim 1, wherein said portion (33) is mounted onto said mouthpiece (13) by way of a thread.

6. A cartridge closure according to claim 1, wherein said mouthpiece (13) and said sleeve portion (33) have cooperating engagement structure (18, 37) for engagement in the closing position of the closure element (3).

7. A cartridge closure according to claim 1, wherein the neck portion (31) of the closure part (3) is provided with a circumferential thread for the mounting of a discharge nozzle.

8. A cartridge closure according to claim 1, wherein the closure part (3) is provided with an integral discharge nozzle (32).

9. A cartridge closure according to claim 1, wherein the transverse wall (14) is provided with a circumferential edge which is conical complementary to the seal surface area (34) of the closure part (3).