TWO-COMPONENT BAROMETRIC CELL HAVING A SEALED TRIGGERING MECHANISM

• US 20100155423A1
• Filed: 01/31/2008
• Published: 06/24/2010
• Est. Priority Date: 02/02/2007
• Status: Active Grant

• Current Assignee: KWASNY GmbH
• Original Assignee: KWASNY GmbH
• Inventors: Kwasny, Hans-Peter
• Granted Patent: US 8,596,502 B2
• Time in Patent Office: Days
• US Class Current: 222/402.210
• CPC Class Codes: B65D 83/687 the products being totally mixed on, or prior to, first use, e.g. by breaking an ampoule containing one of the products

Abstract

The invention relates to a pressurized can comprising a body (2), a dome (3) accommodating a valve (4), a concavely shaped bottom (5), an inner casing (7) attached to a cup (6) located in bottom (5), a push rod (9) arranged in the inner casing (7), said push rod (9) being actuated through the cup (6) and intended to force open the inner casing (7), with said inner casing (7) being joined to the cup (6) via a spring cage (11), said spring cage (11) containing a spring-loaded trigger (12) the bottom-side end of which extending through the cup (6) and acting on the push rod (9), said push rod (9) acting on a membrane (8) arranged at the valve-side end of inner casing (7), said membrane at its valve-side end sealing off the inner casing (7) hermetically against the contents of the pressurized can (1) and being forced open by the push rod (9) actuated by means of trigger element (12), with the spring cage (11) being designed so as to be closed off at its valve side and the trigger element (12) being provided at its bottom side with a sealing element (26) acting against the inner wall of the spring cage.

Claims

1. Pressurized can comprising a body (2), a dome (3) accommodating a valve (4), a concavely shaped bottom (5), an inner casing (7) attached to a cup (6) located in bottom (5), a push rod (9) arranged in the inner casing (7), said push rod (9) being actuated through the cup (6) and intended to force open the inner casing (7), with said inner casing (7) being joined to the cup (6) via a spring cage (11), said spring cage (11) containing a spring-loaded trigger (12) the bottom-side end of which extending through the cup (6) and acting on the push rod (9), said push rod (9) acting on a membrane (8) arranged at the valve-side end of inner casing (7), said membrane at its valve-side end sealing off the inner casing (7) hermetically against the contents of the pressurized can (1) and being forced open by the push rod (9) actuated by means of trigger element (12) characterized in that the spring cage (11) is designed so as to be closed off at its valve side and the trigger element (12) is provided at its bottom side with a sealing element (26) acting against the inner wall of the spring cage.

2. Pressurized can according to claim 1, characterized in that the membrane (8) is glued, welded or screwed on to the inner casing (7).

3. Pressurized can according to claim 1, characterized in that the inner casing (7) and the membrane (8) form a one-piece unit.

4. Pressurized can according to any one of claims 1 to 3, characterized in that the inner casing (7) and the cup (6) are joined together by crimping.

5. Pressurized can according to any one of claims 1 to 4, characterized in that the spring cage (11) is secured in a central pocket (19) of the cup (6).

6. Pressurized can according to claim 5, characterized in that a seal (20) is arranged between the spring cage (11) and the cup (6) in the area of the central pocket (19).

7. Pressurized can according to any of the above claims, characterized in that the spring cage (11) is provided, at its valve-side end, with an inner projection (21) acting as an abutment for a spring element (13).

8. Pressurized can according to claim 7, characterized in that the trigger (12) is provided, at its bottom-side end, with a peripheral projection (22) acting as an abutment for the spring element (13).

9. Pressurized can according to any one of the above claims, characterized in that the trigger (12) at its cup-side end has a sealing face (23) in the form of a circumferential projection which acts against a sealing gasket (20) arranged in a can-side recess (62) of the cup (6).

10. Pressurized can according to any of the above claims, characterized in that the inner casing (7) and the membrane (8) are made from aluminum.

11. Pressurized can according any one of the above claims, characterized in that the membrane (8) has a ring-shaped or circular zone (81) of reduced material thickness.

12. Pressurized can according to any one of the above claims, characterized in that the inner casing (7) has at its bottom-side end a portion of larger diameter (71) designed so as to match the inner diameter of the cup opening (61) arranged in bottom (5).

13. Pressurized can according to any one of the above claims, characterized in that the spring cage (11) at its valve-side end is closed off by a membrane (24) the material thickness of which is lower than the wall thickness of the spring cage.

14. Pressurized can according to any of the above claims, characterized in that the spring cage (11) at its valve-side end is provided with a portion of greater wall thickness.

15. Pressurized can according to any of the above claims, characterized in that the trigger element (12) at its valve-side end has a truncated-cone shaped end portion.

16. Pressurized can according to any of the above claims, characterized in that the push rod (9) is provided with several wings (17) along a central axis.

17. Pressurized can according to claim 16, characterized in that the push rod (9) is of four-wing design and at its valve-side end has two opposing wings (17) forming a dovetail profile.

18. Pressurized can according to any of claim 16 or 17, characterized in that the wings (17) are provided with cut-outs or recesses.

19. Use of the pressurized can according to any of claims 1 to 24 for liquid two-component systems, in particular two-component sealing foams, two-component glues or two-component coatings.