STEM OF A VALVE

Abstract

A stem of a valve for a container for dispensing pressurized fluid, has an inner channel inside a cylindrical housing connecting the at least one lateral inlet opening at its lower end and an outlet opening at its upper end. The inner channel has a conical shape at its lower end and the diameter of the cylindrical housing is increased towards the lower end of the stem and in particular in the section which corresponds to the section with lateral inlet openings. Both adaptations reinforce the stem and make it more resilient against bending and tensile forces.

Claims

1. A stem (1) of a valve for a container for dispensing pressurized fluid, said stem having an inner channel (7) inside a cylindrical housing (4) connecting the at least one lateral inlet opening (2) at its lower end and an outlet opening (3) at its upper end, wherein the inner channel (7) has a conical parabolic shape at its lower end.

2. (canceled)

3. The stem (1) according to claim 1, wherein the cylindrical housing (4) broadens toward the lower end of the stem (1).

4. The stem (1) according to claim 1, wherein the stem (1) is provided on its lower end with a flange (6).

5. The stem (1) according to claim 1, wherein a top sealing part (5) is provided around the outlet opening (3) of the stem (1).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the following, the invention is discussed more in detail with reference to preferred embodiments shown in the drawings in which

[0019] FIG. 1 shows a perspective representation of stem according to the present invention,

[0020] FIG. 2 shows a side view of the same stem,

[0021] FIG. 3 shows a cut representation of the same stem,

[0022] FIG. 4 shows another side view of the same stem,

[0023] FIG. 5 shows another cut representation of the same stem.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] The FIGS. 1 to 5 show a stem 1 for a valve of a container for dispensing pressurized fluid, preferably foam, in particular one component or two component polyurethane foam.

[0025] The stem 1 comprises of a cylindrical housing 4 with an inner channel 7 as a passageway of the pressurized fluid. The inner channel 7 connects the lateral inlet openings 2 at the lower end of the stem 1 with an outlet opening 3 at the upper end of the stem 1. To reinforce the stem 1, the inner channel 4 has a parabolic shape at its lower end. The parabolic shape of the inner channel 4 of the hollow stem 1 confers a higher rigidity to the stem 1 and increases the resilience of the stem 1 tensile/compression forces and also but to a lesser extent the bending force.

[0026] The diameter of the cylindrical housing 4 is increased towards the lower end of the stem 1 and in particular in the section which corresponds to the section with the lateral inlet openings 2. As a result, the stem 1 is more resilient to bending forces acting on the stem 1. The stability of the lower section of the stem 1 with the lateral inlet openings 2 is improved by the increased diameter of the cylindrical housing 4.

[0027] The flange 6 abuts in the closed position of the stem 1 against the housing of the valve thereby closing the passageway through the inner channel 7 of the stem 1.

[0028] The stem 1 provides a top sealing part 5 around the outlet opening 3. This top sealing part 5 is the interface between the stem 1 and an actuator or adapter which may be placed on the valve. The top sealing part 5 has a contact surface 9 for limiting the opening distance of the valve. The contact surface 9 abuts the housing of the valve and inhibits an opening of the valve beyond a maximum opening distance.