Abstract:
An aerosol spray actuator for a pressurized aerosol canister and in particular trigger or button actuated spray actuators having three main parts to simplify the mechanical moving parts of a spray actuator. An actuator button, an actuator base and finally a nozzle piece being inserted at the very end of a product dispensing passage embodied either in the body or the trigger part. A mechanism for permitting and blocking the actuation of the spray actuator is also provided so that inadvertent operation of the actuator can be prevented.

Description:
FIELD OF THE INVENTION  
       [0001]     This invention relates to an aerosol spray actuator for dispensing an aerosolized product from a container, and more specifically, to certain new and useful improvements in the configuration, function, manufacturing and structure of an aerosol spray actuator having an actuating position for dispensing aerosol from a container and an unactuated position where the spray actuator is prevented from actuating a valve in the container.  
       BACKGROUND OF THE INVENTION  
       [0002]     Aerosol containers containing a wide variety of active components or contents under pressure such as insect repellents, insecticides, hairsprays, creams or foams and so on have been marketed widely for household, commercial and industrial purposes.  
         [0003]     In conventional aerosol containers, the outlet is normally a tubular valve stem element springably biased into a closed position which, when depressed into the body of the container opens the valve and releases the contents which are held under pressure. When the applied force at the valve stem is removed, the valve stem returns to its closed position simultaneously stopping the outward flow of the pressurized contents of the container. In one type of aerosol containers, a spray actuator, or button, is fitted directly over the valve stem such that when the actuator is depressed the valve stem is simultaneously depressed or tilted against a spring bias causing the contents of the container to be released via an outlet in the actuator. Release of the pressure at the actuator returns the valve stem to its equilibrium position. Generally, to operate the actuator an enclosing protective cover has to be removed to expose the actuator. Such covers which are then placed back over the button and valve stem, can often be misplaced or discarded by the end-users.  
         [0004]     In another type of aerosol containers, the cap is designed with the actuator as part of its structure whereby the release of the pressurized contents is done by depressing a trigger which is in turn part of the actuator structure. The contents of the aerosol container is ejected from the actuator and exits through a space or orifice in the cap. This is commonly termed a spray-through cap. In this type of aerosol container the trigger is not protected from accidental pressing of the cap by the user. Although in this type of cap, the user is more protected from overspray by the cap, the inconvenience of such devices lies in the accidental actuation of the trigger and inadvertent spraying of the contents is present.  
         [0005]     U.S. Pat. No. 6,523,722 to Clark et al. discloses a spray head for aerosol or pump spray containers. Clark &#39;722 includes an intricate base portion having a fluid outlet passageway integral with the base and mounted on the base via a living hinge. The top or button of Clark &#39;722 includes a flexible member which is also integral with and mounted via a living hinge with a lower portion of the top. The flexible member flexes relative to the top when depressed by a user&#39;s finger, and when appropriately rotationally aligned with the base portion causes movement of the passageway on the base to actuate a valve in the aerosol container. The draw back to Clark is in the assembly of the actuator, in particular after molding the separate pieces the top can only be engaged with the base in one direction and that the engagement of the parts must be performed carefully so as to correctly align the mating parts of the separate base and top. Thus, the challenging assembly of this product can cause manufacturing problems and also raises the cost of each actuator.  
         [0006]     U.S. patent application Ser. No. 10/792,074 to Yerby et al. is similar to Clark &#39;722 in that the base portion of the actuator includes the fluid outlet passage formed integrally therewith and is also an intricate part to mold especially in light of the numerous windows and passages formed through the different sidewalls of the base portion. These windows lead to a relatively complicated mold with numerous shut-offs, or endpoints which must match up when the molds are closed. Any misalignment of the molds leads to flashing, i.e. extra material at the mold junction which can effect the operation of the actuator and lead to substantial increase in manufacturing costs if it must be removed from the part after molding. Also, the top can only be engaged with the base portion in one direction and must be specifically aligned so as to properly align the top portion with the base portion.  
         [0007]     It is therefore desirable to provide an aerosol spray actuator and a method of making the actuator which is capable of overcoming these previously known deficiencies.  
       SUMMARY OF THE INVENTION  
       [0008]     The present invention provides an aerosol spray actuator for a pressurized aerosol canister that overcomes certain shortcomings of prior art actuators and in particular locking actuated spray actuators. Because of their functionality, locking spray actuators are usually composed of numerous parts which are firstly very difficult to mold, and secondly and perhaps more importantly, difficult to assemble. The present invention simplifies the mechanical moving parts of a spray actuator to an actuator button, an actuator base and finally a nozzle piece being inserted at the very end of a product dispensing passage embodied either in the body or the trigger part. Thus, there are only three parts to the present invention which are constructed in various combinations to embody the present invention.  
         [0009]     It is therefore an object of the present invention to provide an aerosol spray actuator which can obviate the above described problems inherent in the conventional spray actuators.  
         [0010]     It is another object of the present invention to provide an aerosol spray actuator wherein the actuator can be positioned in an operative or inoperative position analogous to an on and off position where in the inoperative position the actuator is prevented from actuating a valve of the container.  
         [0011]     It is another object of the present invention to provide an aerosol spray actuator wherein the operative or inoperative position is easily attained by simple basic movements by the user.  
         [0012]     It is still another object of the present invention to provide an aerosol spray actuator wherein the operative and inoperative position of the cap is visually, tactile or audibly easily identified by any user.  
         [0013]     It is still another object of the present invention to provide an aerosol spray actuator wherein an audible position indicator is provided to indicate when the actuator is either in the operative or inoperative position  
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0014]     The invention will now be described, by way of example, with reference to the accompanying drawings in which:  
         [0015]      FIG. 1A  is a perspective view of a twist top actuator and an aerosol spray can in accordance with an embodiment of the present invention;  
         [0016]      FIG. 1B  is a front planar view of the twist top actuator and an aerosol spray can in accordance with the first embodiment of the present invention;  
         [0017]     FIGS.  2 A-C are cross-sectional views of the twist top actuator in accordance with relative actuating and non-actuation positions;  
         [0018]     FIGS.  3 A-B are respectively a cross sectional and a perspective view of the base or collar of the twist top actuator;  
         [0019]     FIGS.  4 A-B are respectively a perspective and a front view of the twist top actuator;  
         [0020]      FIG. 5  is a cross-sectional view of a ring actuator in accordance with an embodiment of the present invention;  
         [0021]      FIG. 6  is a perspective view of a second embodiment of the twist top actuator having an integral base and product passage in accordance with the present invention;  
         [0022]     FIGS.  7 A-B are respective cross-sectional views of the integral base and product passage for the twist cap actuator in accordance with an actuating and an actuated position of the present invention;  
         [0023]     FIGS.  8 A-B are a perspective and cross-sectional view of the integral base and product passage in accordance with the present invention;  
         [0024]      FIG. 9  is a perspective view of the button of the second embodiment of the twist cap actuator;  
         [0025]     FIGS.  10 A-B are perspective view of the button and base in an actuating and a non-actuating position respectively;  
         [0026]      FIG. 11  is a front perspective view of a slide actuator with an aerosol spray can in accordance with another embodiment of the present invention;  
         [0027]      FIG. 12  is a front perspective view of the button and base of the slide actuator;  
         [0028]      FIG. 13A -B are cross-sectional views of the slide actuator in a non-actuating position and an actuating position in accordance with an embodiment of the present invention.  
         [0029]     FIGS.  14 A-C are further cross-sectional views of a slide actuator in a non-actuating, actuating and actuated positions in accordance with an embodiment of the present invention detailing the cam path actuation of the actuator;  
         [0030]      FIG. 15  is a front perspective view of the integral base and nozzle of the slide actuator;  
         [0031]      FIG. 16  is a side perspective view of the integral base and nozzle of the slide actuator;  
         [0032]      FIG. 17  is a front perspective view of the button of the slide actuator;  
         [0033]      FIG. 18  is a planar side view of the button of the slide actuator; and  
         [0034]      FIG. 19  is a perspective bottom view of the base according to another embodiment of the present invention;  
         [0035]      FIG. 20  is a perspective top view of the base according to this further embodiment of the present invention;  
         [0036]      FIG. 21  is a top plan view of the base;  
         [0037]      FIG. 22  is perspective top view of the button; and  
         [0038]      FIG. 23  is a perspective bottom view of the button according to this further embodiment of the present invention. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0039]     A twist top actuator, shown in FIGS.  1 A-B, may be provided with three (3) main parts generally supported on an aerosol spray can C, an actuating button  1 , a base or skirt  2  and a nozzle  3 . The actuating button  1  in the present embodiment is radially rotatable about a longitudinal axis A relative to the base  2  so that there is defined an actuating position and a non-actuating position of the button  1  relative to the base  2 . By “radially rotatable” it is to be understood that the button  1  has a circumference defined by a radius extending from and rotatable about the longitudinal axis A. The button  1  is provided on either side with indented or concave finger gripable sections  4  which allow a user to radially rotate the button  1  relative to the base  2 . Another slightly indented, angled or concave section may be provided in a top most portion of the button  1  to provide a user with an appropriate and ergonomic finger pad  4 ′ to depress the button relative to the base  2 .  
         [0040]     When the button  1  and the base  2  are radially aligned in the actuating position as shown in  FIG. 2A , the button  1  is free to be moved vertically, or axially by pressure on the finger pad  4 ′ along the longitudinal axis A defined through the center of the can and valve stem. The movement of the button  1 , is axial relative to the base so as to press down a valve stem (not shown) of the valve in the spray can or container C to which the actuator is attached.  
         [0041]     The button  1  defines an integral product passage P which comprises an inlet passage  14  for communicating directly with the valve stem connecting to an outlet passage  16  where the nozzle  3  is attached and from which the pressurized aerosol is released directly into the environment. The top surface of the button defines the finger pad  4 ′ or finger engaging surface where a user places their finger to apply pressure to actuate the button, and a bottom edge  11  of the button  1  is provided with at least a slot  5  or notch formed substantially perpendicular relative to the horizontal bottom edge  11 . The slot  5  is provided with a slanting ramp portion  19  which is formed at an angle between the bottom edge and a first sidewall of the slot  5 . A second substantially vertical sidewall is provided opposite the first sidewall to define the slot  5 .  
         [0042]     The ramp portion assists in guiding the slot  5  over the relative support ribs  6  when the button is turned to the actuating position shown in  FIG. 2A , and pushed down by a force F by the user as seen in  FIG. 2B  to the actuated position. It is to be appreciated that similar slots  5  may be provided around the circumference of the bottom edge  11  of the button  1  for facilitating the vertically biased movement of the button  1  relative to the base  2 .  
         [0043]     In the actuating position shown in  FIG. 2A , the slots  5  in the lower edge of the button  1  are located above the support ribs  6  on the base  2  and the button  1  is free to press down on the valve stem (not shown) of the can to release the contents thereof. In this position, the slots  5  are aligned vertically over the ribs  6  so that when the button  1  is pushed down, the ribs  6  are received in the slots  5  as seen in  FIG. 2B  and there is enough vertical travel of the button  1  to depress the valve stem to the extent necessary to actuate the valve and release the pressurized product from the spray can C. Any slight misalignment of the ribs  6  and the slots  5  is accommodated by the angled ramp of each of the slots  5  so that the button  1 , even if not aligned exactly over the ribs  6  will self-align by the ribs sliding along the angled ramp of the slot  5  and hence into the slot  5  as the button  1  is pushed down into the base  2 .  
         [0044]     To attain the non-actuating position as shown in  FIG. 2C  where the button  1  cannot be depressed to actuate the valve V by pushing down on the valve stem S, the button  1  is rotated, or turned in a radial manner, i.e. around the vertical axis A relative to the base  2 , to the non-actuating position where the lowermost or bottom edge  11  of the button  1  rides up onto and over the top edge of the support ribs  6 . The ramp portion  19  assists in this regard and as the button  1  is rotated, the slanting ramp portion  19  vertically, i.e. axially, raises the bottom edge  11  up onto the top edge of the support ribs  6 . Consequently, the inlet passage  14  is axially moved relative to the valve stem S in an upward, vertical or axial relation so that space is formed between an inner ledge formed in the product passage P to directly press on the valve stem S, and the end of the valve stem S. This space provides for further protection against inadvertent actuation because in the non-actuating position the inner ledge of the product passage is spaced from the end of the valve stem. In other words, the slots  5  are rotated out of radial alignment with the ribs  6  and the product passage is moved axially out of engagement with the valve stem which prevents downward force on the button  1  from depressing the button  1  and actuating the valve stem S of the spray can C.  
         [0045]     Although the support ribs  6  in the base  2  can stop the button from being depressed, there is no structure in the device which entirely prevents the relative radial rotation between the button  1  and the base  2 , i.e. the button does not “lock” into any specific operative or inoperative position relative to the base. A position indicating means may be provided such as a tactile, visual or audible signal which makes the user aware of either the actuating or non-actuating position. This indicating means may provide some partial or limited resistance to relative rotation between the button  1  and base  2  via slightly overlapping radially or vertically oriented tabs, or other such type of minimally frictionally engaging elements, but does not lock the button into any specific position. By “lock” we understand for example a child safety lock, wherein the button  1  cannot be rotated by normal turning force relative to the base  2  without physical removal of a locking mechanism as described in many known devices.  
         [0046]      FIGS. 3A and 3B  show the base  2  or skirt of the twist top actuator in further detail, including the spray can collar engaging edges  15  which protrude circumferentially inwardly at least partially around an interior wall of the base  2 . Each of these collar engaging edges  15  engages in a “snap-fit” over the collar of the spray can (as better seen in  FIGS. 2A and 2B ) to biasly engage underneath the collar or rim and thus secure the twist top actuator to the aerosol spray can. The ribs  6  are shown extending radially inwards from the inner wall of the base  2  and may be spaced any desired distance apart in order to facilitate the complete engagement and smooth operability of the button movement relative to the base  2 .  
         [0047]      FIGS. 4A and 4B  provide a further detailed view of the button  1  and mechanical breakup  3 ′ of the present invention. Shown in a modified cross-type opening the mechanical breakup  3 ′ assists in further aersolizing the dispensed product and can be formed in a variety of shapes and configurations to perform this function. On an outermost lower edge  11  of the button  1  are provided a spaced apart series of base engaging lips or ledges  17  each ledge  17  having an end thereof coinciding with the slot  5  and proceeding partially circumferentially around the lower edge  11  in order to facilitate a relative radial freedom of movement of the button with respect to the base  2 . The top edge of the ledge  17  engages inside to top edge  12  of the base  2  when the button  1  is inserted down into the base  2  through the top opening so that the ledges  17  fall underneath the edge  12  of the top opening in the base  2  and engage underneath the top edge  12  to keep the button  1  from being pulled vertically out of the top opening of the base  2 .  
         [0048]     In another embodiment, a ring actuator, shown in  FIG. 5 , is somewhat similar to the previous twist top actuator, except that the button  1  is press fit onto the valve stem, and has a lower circumferential portion which directly engages an inner rim of the spray can C so as to resist radial rotation. Different from the twisting button in the previous embodiment, in the ring actuator the base  2  is rotatable relative to the button  1  between an actuating and a non-actuating position. In the actuating position shown in the  FIG. 5 , the support ribs  6  on the base  2  are rotated into position located below the slots  5  in the lower edge of the button  1  and thus the button  1  is free to press down on the valve stem S of the can C to release the contents thereof.  
         [0049]     When the base  2  is rotated, or radially turned relative to the button  1 , to the non-actuating position, the lowermost edge of the button  1  is pushed up onto and over the top of the support ribs  6  which prevents downward force on the button  1  from depressing the button  1  and actuating the valve stem of the spray can. Although the support ribs  6  in the base  2  can stop the button from being depressed, there is no structure in the actuator which prevents the relative rotation between the button  1  and the base  2 , i.e. the button does not “lock” into any specific operative or inoperative position relative to the base. By “lock,” it is intended that the button cannot be rotated relative to the base  2  without physical removal of some locking mechanism as described in many of the uncovered patents below. Again, a position indicating means as previously described may be provided to alert the user to the relative positioning of the base  2 .  
         [0050]     In yet another embodiment of the twist cap actuator, shown in  FIGS. 6 and 7 A-B, a product passage P is an integral part of the actuator base  2  rather than the button  1  as described in the previous embodiments. As seen in  FIGS. 7A and 7B , the nozzle  3  is thus inserted in a nozzle arm  8  defining the outlet of the product passage P which is hinged to the base  2  so that the button  1  when pressed depresses the product passage P and hence the valve stem (not shown) upon actuation. Better seen in FIGS.  10 A-B, the button  1  is provided with an opening  0  formed in a sidewall thereof which in the actuating position overlies the outlet orifice of the product passage P permitting the pressurized product to be ejected into the environment. In the non-actuating position shown in  FIG. 10B  when the button  1  is rotated, the opening  0  may be thus rotated away from the outlet and a sidewall of the button  1  will overlie the outlet.  
         [0051]     The actuating and non-actuating positions of this embodiment are similar to those described above, the relative radial rotation between the base  2  and button  1  aligns the slots  5  in the button  1  with the support ribs  6  in the base  2  as shown in  FIG. 7A . As seen in  FIG. 7B  when the button  1  is depressed, the nozzle arm  8  hinges about a living hinge H connecting the nozzle arm  8  to the base, and the slots  5  are permitted to pass downwards over the ribs  6 . The living hinge H is integral between the product passage P and the base  2 . The living hinge H may directly connect the wall of the base  2  with the nozzle arm  8  defining the passage P, or a modified rib structure may also form the hinge and support the passage as shown in FIGS.  8 A-B.  
         [0052]     FIGS.  8 A-B shows the base  2  or skirt and living hinge H in further detail, including the spray can collar engaging edges  15  which protrude circumferentially inwardly at least partially around an interior wall of the base  2 . Each of these collar engaging edges  15  engages in a “snap-fit” over the collar of the spray can (as better seen in  FIGS. 7A and 7B ) to biasly engage underneath the collar or rim and thus secure the twist top actuator to the aerosol spray can. The ribs  6  are shown extending radially inwards from the inner wall of the base  2  and may be spaced any desired distance apart in order to facilitate the complete engagement and smooth operability of the button movement relative to the base  2 .  
         [0053]      FIG. 9  provides a further detailed view of the button  1  of the present embodiment. On an outermost lower edge  11  of the button  1  are provided a spaced apart series of base engaging lips or ledges  17  each ledge  17  having an end thereof coinciding with the slot  5  and proceeding partially circumferentially around the lower edge  11  in order to facilitate a relative radial freedom of movement of the button with respect to the base  2 . The top edge of the ledge  17  engages inside to top edge  12  of the base  2  when the button  1  is inserted down into the base  2  through the top opening so that the ledges  17  fall underneath the edge  12  of the top opening in the base  2  and engage underneath the top edge  12  to keep the button  1  from being pulled vertically out of the top opening of the base  2 .  
         [0054]      FIG. 9  also shows the button  1  for this embodiment having an opening  0  in the button  1  and also the slots  5  are shown with parallel sides however it is to be appreciated that the ramp edge of the previous embodiments may also be utilized. Further, the finger engaging portions  4  of the button are shown convex.  
         [0055]     As in the previous embodiments, when the base  2  and button  1  are relatively rotated to the non-actuating position, the lowermost edge of the button  1  is pushed up onto the top of the support ribs  6  and prevents downward force on the button  1  from depressing the button  1  and actuating the valve stem of the spray can from spraying the contents of the can when the button  1  is pressed.  
         [0056]     In a further embodiment, a slide actuator is shown in  FIGS. 11-18 . The top button  1  does not rotate radially relative to the base  2  as described in the previous embodiments, but rather slides radially and tilts substantially vertically to move the product passage P and actuate the valve stem. The button  1  is situated between two ears  13  formed in the base which extend upwards to encompass and guide the sides of the button  1 .  
         [0057]     The nozzle arm  8  which includes the product passage P is an integral part of the base  2  as shown in FIGS.  13 A-B. When the button  1  is in the non-actuating position as shown in  FIG. 13A  the lower edge  11  of the button rests on a top edge  12  of the base  2  and thus the button  1  cannot be pushed down relative to the base  2 . To actuate this embodiment the button  1 , as seen in  FIG. 13B , is slid radially relative to the base  2  and longitudinal axis A. In other words, with the user thus radially pushing the button  1  relative to the axis A, this causes the button  1  to be slid substantially outward and upward relative to the base  2  and into a position with a depending protrusion or bump  3  on the button  1  riding a ramp  10  on the nozzle arm  8  to a position substantially aligned over the nozzle arm  8 . The lower edge  11  of the button  1  is thus raised above the top edge  12  of the base  2  and a downward pressure on the button  1  will thus press down on the nozzle arm  8  causing actuation of the valve V.  
         [0058]     Turning to FIGS.  14 A-C which show cut-away views of the slide actuator through the ears  13  which does not show the nozzle arm  8  and product passage P for purposes of clarity and better visibility, the button  1  is shown slidably affixed to the base via a pair of pivots  7  and  7 ′ on at least one side of the button  1  being engaged with an associated slot  9  in the base  2 . When the button  1  is slid forward and upward as shown in  FIG. 14B , the front pivot is moved to a position where the front pivot  7  is permitted a degree of vertical freedom by the slot  9 , while the rear pivot  7 ′ remains vertically fixed as a pivot point about which the button  1  can rotate, or more aptly tilt, relative to the base  2  in order to actuate the nozzle arm  8  as seen in  14 C where the button  1  has been pushed down and the front pivot  7  is permitted to move vertically downward in the slot  9 . The front lower edge  11  of the button  1  is now radially offset from the top edge  12  of the base  2  and therefore is permitted to overlap to an extent necessary to depress the valve stem and actuate the valve.  
         [0059]     When the button  1  is released by the user the bias of the nozzle arm  8  and the valve stem push the bump  3  rearward down the ramp  10  and the slot  9  guides the front and rear pivots  7 ,  7 ′ back into a substantially horizontal alignment wherein the alignment the bottom edge  11  of the button  1  rests on a top rim of the base  12  and cannot be pushed downward relative thereto and thus the spray can cannot be actuated.  
         [0060]      FIGS. 15 and 16  show the base  2  of the present embodiment having the integral nozzle arm  8  attached via living hinge H with the base  2  and the slots  9  for captively retaining the button  1  between the ears  13  of the base.  FIGS. 17 and 18  shown the button  1  and pivots  7 ,  7 ′ on the sides thereof for engaging the base  2  and the respective slots  9 .  
         [0061]      FIGS. 19-23  disclose yet another embodiment of the present invention.  FIGS. 19, 20  and  21  show the base  2  of the twist top actuator similar to the embodiment of  FIGS. 3A and 3B  including the spray can collar engaging edges  15  which protrude circumferentially inwardly at least partially around an interior wall of the base  2 . As in the previous embodiment, each of these collar engaging edges  15  engages in a “snap-fit” over the collar of the spray can (as seen in  FIGS. 2A and 2B ) to biasly engage underneath the collar or rim and thus secure the base  2  and hence the twist top actuator to the aerosol spray can.  
         [0062]     Instead of a plurality of single ribs  6  spaced around an inside of the base  2 , the present embodiment utilizes a pair, or pairs, of ribs including a first rib  6  and a second rib  6 ′. The pairs of first and the second ribs  6 ,  6 ′ are positioned circumferentially around the top edge  12  of the base  2  and are generally vertically oriented and extend radially inwards from the inner wall of the base  2 . Any number of pairs of ribs  6 ,  6 ′ may be spaced around the top edge  12  in order to facilitate the complete engagement and smooth operability of the button  1  relative to the base  2 .  
         [0063]     The first rib  6  in the base  2  is provided with an upwardly facing horizontal surface  21  for engaging and supporting the bottom edge  11  of the button. The horizontal surface  21  provides a support for the button  1  to facilitate the radial rotation of the button  1  between the actuating position and the non-actuated position. In the non-actuated position, the horizontal surface  21  is in direct supporting contact with the lower edge  11  of the button so as to ensure that any downward pressure on the button does not cause depression of the button  1 , and consequently the valve in the aerosol cannot be actuated. The ramp portion  19  assists in this regard and as the button  1  is rotated, the slanting ramp portion  19  vertically, i.e. axially, raises the bottom edge  11  up onto the horizontal surface  21  of the support ribs  6 .  
         [0064]     Consequently, in the non-actuated position the inlet passage  14  is axially moved relative to the valve stem S in an upward, vertical or axial relation. The valve stem S and the inlet passage  14  remain at least radially engaged as the valve stem S is generally in some manner engaged and supporting the button  1  even in the non-actuated position. When the inlet passage  14  is axially moved, i.e. raised relative to the valve stem S in the non-actuated position a space is formed between an inner ledge formed in the product passage P to directly press on the valve stem S, and the end of the valve stem S. This space provides for further protection against inadvertent actuation because in the non-actuating position the inner ledge of the product passage is spaced from the end of the valve stem. In other words, the slots  5  are rotated out of radial alignment with the ribs  6  and the product passage P is moved out of axial engagement with the valve stem forming the space which prevents downward force by the button  1  from actuating the valve stem S of the spray can C. In the actuated position, the button is rotated into a position where the slot  5  is poised above the horizontal surface  21  of the rib  6  to allow depression of the button  1  against the inherent bias of the aerosol valve and the button  1  is moved axially into engagement with the valve stem again. A further detail description of the actuating and non-actuated positions will be provided below.  
         [0065]     The second rib  6 ′ is located at a slight distance from the first rib  6  to define a space S′ therebetween. The second rib  6 ′ is generally not provided with a horizontal surface  21  but forms a substantially planar vertically oriented edge  23  extending radially inwards from the inner wall of the base  2  to a point adjacent an outer wall of the button, but which does not interfere with the vertical motion i.e. the depression and release of the button in any position. The second rib  6 ′ is mainly a radial stop for limiting the radial rotation of the button and for working in cooperation with the first rib  6  to engage protrusions  25 ,  27  on the button  1 . These protrusions  25 ,  27  on the button  1  are frictionally engaged in the space S′ between the ribs  6 ,  6 ′ so as to indicate in at least a tactile sense to the user the specific position of the button  1 , i.e. the actuating or non-actuating position as discussed below.  
         [0066]     In this embodiment of the button  1  as shown in  FIGS. 22 and 23 , and similar to  FIGS. 4A and 4B , the top surface of the button  1  defines the finger pad  4 ′ or finger engaging surface where a user places their finger to apply pressure to actuate the button  1  in a vertical or straight up and down manner with no tilting of the button relative to the base  2 . A bottom edge  11  of the button  1  is provided with at least a slot  5  or notch formed substantially perpendicular relative to the horizontal bottom edge  11 . The slot  5  can be provided with a slanting ramp portion  19  which is formed at an angle between the bottom edge  11  and a first sidewall  29  of the slot  5 . A second substantially vertical sidewall  31  is provided opposite the first sidewall  29  to define the slot  5 . The ramp portion  19  assists in guiding the slot  5  into and out of the actuating and non-actuated positions over the relative support rib  6 . It is to be appreciated that similar slots  5  may be provided around the circumference of the bottom edge  11  of the button  1  corresponding to the number of rib pairs so as facilitate the vertically biased movement of the button  1  relative to the base  2 .  
         [0067]     As shown in  FIG. 23 , on the outermost lower edge  11  of the button  1  are provided a spaced apart series of base engaging lips or ledges  17 . Each ledge  17  has a first end nearly spaced from, or coinciding with the slot  5  and proceeding partially circumferentially around the lower edge  11  to a second end in order to facilitate a relative radial rotation of the button with respect to the base  2 . Positioned between the slot  5  and the first end of ledge  17 , an actuating protrusion  25  may be incorporated into the lower edge  11  of the button adjacent the slot  5  in order to engage in the space S′ between the first and second ribs  6 ,  6 ′. This actuating protrusion  25  is slightly radially larger than the vertical oriented edge  23  of at least the second ribs  6 ′ so that a slight increased amount of force is necessary to frictionally engage the actuating protrusion in the space S′ between the first and second ribs  6 ,  6 ′. When the actuating protrusion  25  is aligned between the ribs  6 ,  6 ′ the slot  5  is generally aligned in a vertical relation over the rib  6  in the actuating, or operable position to permit actuation of the button  1 .  
         [0068]     Adjacent the second end of the ledge  17  is provided a non-actuating protrusion  27  radially extending from adjacent the outermost lower edge  11  of the button  1 . The non-actuating protrusion  27 , as well as the actuating protrusion  25 , may have a width or size approximately the same as the spacing S between the first and second ribs  6 ,  6 ′ so at to fit cooperatively therebetween and also protrudes radially to an extent so as to require slightly more force by the user to engage either protrusion  25 ,  27  between the ribs  6 ,  6 ′, as well as to remove the protrusions  25 ,  27  from engagement therein. This creates a tactile feel, and even an audible signal to the user that the button  1  has attained a desired position. The non-actuating protrusion  27  generally maintains the button  1  in an inoperable position where the lower edge  11  of the button is supported directly on top of the upper horizontal surface  21  of the rib  6 .  
         [0069]     When the button is inserted into the base  2 , the top edge of the ledge  17  engages inside to top edge  12  of the base  2  when the button  1  is inserted down into the base  2  through the top opening thereof so that the ledges  17  fall underneath the edge  12  of the top opening in the base  2  and engage underneath the top edge  12  to keep the button  1  from being pulled, or pushed, axially out of the top opening of the base  2 .  
         [0070]     In the actuating position the slots  5  in the lower edge of the button  1  are located vertically above the support ribs  6  on the base  2  and the button  1  is free to press down on the valve stem S of the can to release the contents thereof. In this position, all the slots  5  are aligned vertically over the respective ribs  6  so that when the button  1  is pushed vertically straight up and down, all the ribs  6  are substantially concurrently received in the slots  5  as seen in  FIG. 2B  and the slot is sized so that there is enough vertical travel of the button  1  to depress the valve stem to the extent necessary to actuate the valve and release the pressurized product from the spray can C.  
         [0071]     In the operable position, the actuating protrusion  25  incorporated into the lower edge  11  of the button and adjacent the slot  5  and the first end of ledge  17  engages in the space S′ between the first and second ribs  6 ,  6 ′. Because, this protrusion  25  is slightly radially larger than an inner edge of the first and second ribs  6 ,  6 ′ the protrusion  25  is maintained therein until an increased amount of radial force is used to disengage the protrusion  25  from between the first and second ribs  6 ,  6 ′ upon completion of actuation of the button  1 . Also, In the operable position the first end of the ledge  17  comes into contact with the second rib  6 ′ so that further radial rotation in that direction is inhibited and with the actuating protrusion situated in the space S′ between the first and second ribs  6 ,  6 ′ the button is frictionally maintained in the radially operable position, but is free however to move in the axial direction.  
         [0072]     To attain the non-actuating position similar to that as previously shown in  FIG. 2C  where the button  1  cannot be depressed to actuate the valve V by pushing down on the valve stem S, the button  1  is rotated, or turned in a radial manner, i.e. around the vertical axis A relative to the base  2 . The actuating protrusion  25  is forced frictionally out of the space S′ between the first and second ribs  6 ,  6 ′, and the button  1  is rotated in such a manner that the ramp portion  19  of the button  1  rides up onto the horizontal surface  21  of the rib  6  until the respective non-actuating protrusion  27  adjacent the second end  35  of an adjacent ledge  17  is frictionally engaged in between the first and second ribs  6 ,  6 ′. In this manner the non-actuating position is attained where the lowermost bottom edge  11  of the button  1  rides up onto the horizontal surface  21  of the support ribs  6 . In other words, the slots  5  are rotated out of radial alignment with the ribs  6  which prevents downward force on the button  1  from depressing the button  1  and actuating the valve stem S of the spray can C.  
         [0073]     The ramp portion  19  assists in this regard and as the button  1  is rotated, the slanting ramp portion  19  vertically, i.e. axially, raises the bottom edge  11  up onto the top edge of the support ribs  6 . Consequently, the inlet passage  14  is axially moved relative to the valve stem S in an upward, vertical or axial relation so that space is formed between an inner ledge formed in the product passage P to directly press on the valve stem S, and the end of the valve stem S. This space provides for further protection against inadvertent actuation because in the non-actuating position the inner ledge of the product passage is spaced from the end of the valve stem. In other words, the slots  5  are rotated out of radial alignment with the ribs  6  and the product passage is moved axially out of engagement with the valve stem which prevents downward force on the button  1  from depressing the button  1  and actuating the valve stem S of the spray can C.  
         [0074]     Although the support ribs  6  in the base  2  prevent the button  1  from being depressed, there is no structure in the device which entirely prevents the relative radial rotation between the button  1  and the base  2 , i.e. the button  1  does not “lock” into any specific operative or inoperative position relative to the base. In other words, the protrusions  25 ,  27  and engagement between the ribs  6 ,  6 ′ may to some extent inhibit rotation of the button  1 , they do not lock the button  1  so it cannot be turned. The protrusions  25 ,  27  act as a position indicating means such as a tactile, or even audible signal which makes the user aware of either the actuating or non-actuating position. This indicating means may provide some partial or limited resistance to relative rotation between the button  1  and base  2  via slightly overlapping radially or vertically oriented tabs, or other such type of minimally frictionally engaging elements as described above, but does not lock the button into any specific position. By “lock” we understand for example a child safety lock, wherein the button  1  cannot be rotated by a manual turning force relative to the base  2  without physical removal of a locking mechanism as described in many known devices.  
         [0075]     Since certain changes may be made in the above described improvement, without departing from the spirit and scope of the invention herein involved, it is intended that all of the subject matter of the above description or shown in the accompanying drawings shall be interpreted merely as examples illustrating the inventive concept herein and shall not be construed as limiting the invention.