Aerosol actuator

Abstract

The aerosol actuator includes a shroud. An actuation member situated within the shroud has a stem bore pocket adapted to receive the valve stem of the aerosol container. In high speed production, entrance of the stem into the pocket as the shroud is mounted on the aerosol container is facilitated by providing the pocket with a plurality of inwardly extending compressible ribs and a tab extending from the shroud which stabilizes the actuation member within the shroud. The tab is pivoted out of the path of movement of the actuation member upon initial depression of the actuation member by the user. To prevent accidental depression of the actuation member by a top load, the shroud wall is extended above the plane of the surface of the actuation member.

Claims

1. An aerosol actuator for use with a container of pressurized fluid of the type having a valve with a stem depressible to release the contents of the container, said actuator comprising a shroud adapted to be situated on the container over the stern, an actuation member situated within said shroud comprising a stem bore pocket adapted to receive the valve stem, said actuation member being movable relative to said shroud between a first position wherein the valve stem is not depressed and a second position wherein the valve stem is depressed to release the contents of the container, said actuation member including a nozzle with an outlet port and a channel connecting the valve stem and said nozzle, said stem bore pocket having an axis parallel to an interior surface of the stem bore pocket, and a plurality of ribs extending from said interior surface of said stem bore pocket along the direction of said axis to facilitate entrance of the stern into said stern bore pocket, wherein said ribs comprise inclined surfaces proximate the entrance of said stem bore pocket, are circumferentially arranged around said interior surface of said stem bore pocket, are formed of compressible or resilient material, have tapered outer edges and function to funnel the valve stem into said stem bore pocket, the ribs guide the end of the valve stem into the stem bore pocket by aligning the stem bore pocket with the valve stem as the actuator is mounted on the container.

2. An aerosol actuator for use with a container of pressurized fluid of the type having a valve with a stem depressible to release the contents of the container, said actuator comprising a shroud adapted to be situated on the container over the stem, an actuation member mounted to said shroud for movement between a first position wherein the valve stem is not depressed and a second position wherein the valve stem is depressed to release the contents of the container, said actuation member including a nozzle with an outlet port and a channel connecting said valve stem and said nozzle, and a tab extending from said shroud toward the path of movement of said actuation member, said tab being moved from an active position intersecting said path of movement of said actuation member to a passive position remote from the path of movement of said actuation member only the first time said actuation member is moved from said first position to said second position, wherein said tab thereafter permanently remains in said passive position remote from the path of movement of said actuation member, wherein said actuation member comprises a stem bore pocket and said tab, in said active position stabilizes said actuation member such that said stem bore pocket is aligned with the valve stem.

3. The actuator of claim 2, wherein said tab, in its active position, maintains said actuation member in position to receive the valve stem during assembly of the actuator and the container.

4. The actuator of claim 2, wherein said actuation member is adapted to pivot said tab out of the path of movement of said actuation member as the actuation member is depressed for the first time.

5. The actuator of claim 2, wherein said actuation member is adapted to pivot said tab out of the path of movement of said actuation member as the actuation member is depressed for the first time by the user.

6. The actuator of claim 2, wherein said tab is connected to said shroud by a living hinge.

7. The actuator of claim 2, wherein said actuation member comprises a downwardly extending part configured to engage said tab as the actuation member is depressed for the first time.

8. The actuator of claim 7, wherein said part comprises an inclined surface.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF DRAWINGS

(1) To these and to such other objects that may hereinafter appear, the present invention relates to an aerosol actuator for a pressurized fluid container as described in detail in the following specification and recited in the annexed claims, taken together with the accompanying drawings, in which like numerals refer to like parts and in which:

(2) FIG. 1 is a perspective view of the aerosol actuator of the present invention as it would appear mounted on a pressurized container;

(3) FIG. 2 is an elevation view of the front of the actuator;

(4) FIG. 3 is an elevation view of the back of the actuator;

(5) FIG. 4 is a plan view of the top of the actuator;

(6) FIG. 5 is a plan view of the bottom of the actuator;

(7) FIG. 6 is an enlarged cross-sectional view of the top of the container, the valve stem and stem bore pocket;

(8) FIG. 7 is an enlarged view of a stem bore pocket;

(9) FIG. 8 is a cross-sectional view of the actuator;

(10) FIG. 9 is a cross-sectional view of the portion of the shroud to which the tab is connected, showing the position of the tab before and after the initial depression of the actuation member.

DETAILED DESCRIPTION OF THE INVENTION

(11) FIGS. 1-4 show the exterior of the aerosol actuator of the present invention. FIG. 1 shows the actuator as it would appear on a pressurized fluid container, generally designated A. As is conventional, a spring-loaded valve stem protrudes from the center of the top of the container (not visible in these figures) which when depressed releases the pressurized fluid in the container.

(12) The actuator is formed of three basic parts: a shroud, generally designated B, adapted to be mounted on the top of container A, over the valve stem; an actuation member, generally designated C, which is moveably mounted within shroud B in order to depress the valve stem; and a nozzle, generally designated D, including a fluid channel extending from the valve stem to the outlet port of the nozzle (not visible in these figures). Nozzle D is moveably mounted to actuation member C and can be rotated between vertical and horizontal positions to provide different spray patterns.

(13) Shroud B includes a generally “U” shaped wall defining an opening within which actuation member C is received. The bottom of the shroud wall is configured to engage the top of container A to mount the actuator on the container.

(14) The top of actuation member C includes a button with a surface 10 defining an area where the finger of the user may be positioned to apply an external downwardly directed force to move the actuation member to depress the valve stem in order to release the pressurized fluid in the container. Surface 10 may be provided with spaced parallel protrusions to provide a non-slip surface for the finger of the user.

(15) As best seen in FIG. 8, the actuation member has an internal channel 12 connecting the valve stem to the nozzle. Channel 12 has a vertical portion 12a, aligned with the valve stem and a horizontal portion 12b leading to the nozzle. Depression of the valve stem releases the contents of the container into channel portion 12a. From channel portion 12a, the released fluid is conducted through channel portion 12b to the nozzle.

(16) Nozzle D is rotatably mounted between the walls of the shroud between the position illustrated in FIG. 1, where the elongated portion 14 of the nozzle and the straw 16 extending from portion 14 are in the vertical position, and a position (not shown) where the elongated portion 14 of the nozzle and the straw 16 are in the horizontal position.

(17) Nozzle D has two spray outlet ports 18 and 20. In the position illustrated in FIG. 1, outlet port 18 is connected to the end of channel portion 12b through the body of the nozzle and will provide a wide-angle spray pattern of the fluid released from the container. When the nozzle is rotated to the position where the nozzle portion 14 is horizontal, the end of channel portion 12b is aligned with opening 22 which will conduct the released fluid through port 20 to the straw 16. The fluid exits the straw in a concentrated spray pattern.

(18) Referring now to FIGS. 5 through 8, the inlet end of channel 12a is provided with a stem bore pocket 24. Pocket 24 is adapted to receive the end of the valve stem 28 when the actuator is mounted on the container, as seen in FIG. 6.

(19) The inlet end of pocket 24 is provided with a plurality of ribs 26 with protrude from the interior surface of the bore and extend along the internal surface of the bore in a direction substantially parallel to the axis of the bore. The ribs are formed of resilient or compressible material and have tapered outer edges 27 as is best seen in FIG. 6. The ribs guide the end of the valve stem 28 into the pocket by aligning the pocket with the valve stem as the actuator is mounted on the container. This configuration allows actuators to be positioned or aligned with the valve stem prior to a seal being achieved and therefore not requiring the valve to be depressed and or activated so that the actuator can be mounted on containers at higher speed than would not otherwise be possible.

(20) Ribs 26 are circumferentially arranged around the interior surface of the stem bore pocket. The ribs flare out as they extend toward the bore opening such that tapered outer edges 27 are spaced apart as best seen in FIG. 7. This configuration acts to funnel the valve stem into the pocket, correcting any misalignment which may exist between the actuation member and the valve stem as the actuators are mounted on the containers. Preferably, the ribs are designed to engage the stem at a point spaced from the radial seal area, at a position just below the radial seal area.

(21) The number of the ribs may differ. The figures illustrate the pocket with five ribs. However, different numbers of ribs may be used.

(22) Referring now to FIGS. 5 and 9, a tab 30 is provided in order to stabilize the actuation member such that the actuation member is in the correct position to receive the valve stem into the stem bore pocket as the actuator is mounted on the container, further enhancing the ability of the actuators of the present invention to be mounted on containers as high speed.

(23) Tab 30 extends from the shroud wall toward the actuation member. The tab is movable between an active position, where the actuation member is immobilized as the actuator is mounted on a container, and a passive position, where the tab allows the actuation member to move freely within the shroud.

(24) One end of tab 30 is connected to the shroud by a “living hinge” which allows the tab to be rotated from its active position to its passive position The rotation of the tab occurs after the actuator is mounted on the container, upon the initial depression of the actuation member by the user. In its active position, the tab is in the path of movement of the actuation member, preventing the actuation member from moving relative to the shroud. In its passive position, the tab is situated outside the path of movement of the actuation member and no longer restricts or interferes with the movement of the actuation member.

(25) As best seen in FIG. 9, the shroud B has an internal part 32 extending vertically downward from the interior surface of the shroud at a location spaced a short distance from the rear of the shroud. FIG. 5 shows the tab in its active position. Tab 30 extends from the bottom end of part 32.

(26) The actuation member has a part 34 extending downwardly from the rear thereof. The end of part 34 has an inclined surface. In its active position, tab 30 is situated under part 34, maintaining the actuation member in the correct position for the stem bore pocket to receive the valve stem, as the actuator is mounted on the container.

(27) The product is shipped with the tab in the active position. The tab remains in that position until the actuation member is depressed the first time by the user. As illustrated in FIG. 9, the initial depression of the actuation member will cause the actuation member part 34 move downwardly to rotate tab 30 from its active position to its passive position out of the path of movement of the actuation member such that the depression of the actuation member is no longer inhibited by the tab. Tab 30 will remain in its passive position throughout the life of the product, without interfering with the operation of the actuator.

(28) The ribs of the stem bore pocket and the stabilization tab each contribute to the ability to mount the actuators of the present invention to containers in a high-speed manner. The tab stabilizes the position of the actuation member within the shroud. The ribs funnel the valve stems into the entrance of the stem bore pocket, correcting any misalignment between the valve stem and the entrance to the pocket.

(29) During packaging and handling of the container with the aerosol actuator, a top load resulting from an external downward force may cause the actuation member to be depressed enough to accidentally release of the container contents, an unwanted occurrence. This may happen, for example, if the products are stacked one on top of another in a carton without packaging materials situated between the products.

(30) In order to avoid such accidental discharge from a top load, the present invention is designed such that the top edge 36 of the shroud was is extended above the plane of the button surface 10 of the actuation member. This is best seen in FIGS. 2 and 3. The extended top 36 of the shroud wall prevents a top load from a planar object from exerting an external force on the actuator. The extended shroud wall transfers the top load to the container. This structure accomplishes this function without restricting access to button surface 10 by the user and without requiring additional packaging materials.

(31) It will now be appreciated that the present invention relates to an aerosol actuator which can be mounted to an aerosol container in high speed production by stabilizing the position of the actuation member and correcting any misalignment between the actuation member stem bore pocket and the valve stem. Further, the shroud wall is extended to avoid accidental release of the container contents resulting from a top load without restricting access to the actuation member or the necessity of additional packing materials.

(32) While only a single preferred embodiment of the present invention has been disclosed for purposes of illustration, it is obvious that many modifications and variations could be made thereto. It is intended to cover all of those modifications and variations which fall within the scope of the present invention, as defined by the following claims: