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1. Field of the Invention
The present invention relates generally to actuating apparatus, and more particularly to actuator caps that are placed on containers and used to dispense product from the containers.
2. Description of the Background of the Invention
Various apparatus for dispensing product from a container or reservoir of product have been developed. Smrt U.S. Pat. No. 5,287,998 discloses an actuator fitted to a container and including an axially extending passage therethrough for discharging product. The actuator includes a pair of wings that extend transversely from the actuator. The container may be moved axially within a device such that the wings bear against a surface defining a passage, thereby discharging product through the passage.
Brotspies et al. U.S. Pat. No. 6,386,397 discloses a spray bottle grip used with a nasal spray bottle. The grip is coupled to a reciprocating nozzle of the spray bottle, and two arms extend downwardly along the spray bottle. The arms include finger flanges that provide an ergonomic means of reciprocating the nozzle to dispense product from the spray bottle.
Haas U.S. Pat. No. 3,318,492 discloses a disc-shaped actuator attached to a nozzle of a container. A user may depress the actuator with his finger to dispense product from the container.
Scheindel et al. U.S. Pat. No. 6,340,103 discloses a handle extending along a container body. When a user pulls the handle toward the container body, a portion of the handle pushes downwardly upon a nozzle portion of the container to dispense product from the container.
Micallef U.S. Pat. No. 4,138,039 discloses a container having a vertically reciprocating tubular pump. A cap is fitted to the container and includes an actuator button extending from a sidewall of the cap. Movement of the actuator button in a direction toward the sidewall of the cap is translated into perpendicular reciprocating movement of the pump.
Other patents disclose devices having a container of product disposed at a first end of a rod and having a trigger mechanism at a second end of the rod wherein a user may actuate the container from a distance. Discharging product from a distance can be an advantage for many purposes, such as accessing hard-to-reach places or perhaps for discharging an insecticide into a hornet nest without placing oneself too close to the nest. Smrt U.S. Pat. No. 5,518,148 discloses a device where an actuating rod has a trigger on a first end and a container on a second end. Pulling the trigger moves the actuating rod longitudinally such that the second end of the rod moves a bell crank, which in turn, moves an additional rod that actuates a valve on the container. Aberegg et al. U.S. Pat. No. 6,551,001, assigned to the assignee of the present application and the disclosure of which is incorporated by reference herein, discloses a cleaning device having a trigger at a first end of a rod and a mop cleaning head and a container at a second end of the rod. Pulling the trigger moves a pivot link, which in turn actuates a valve of the container, thereby discharging product from the container onto the surface to be cleaned by the mop cleaning head.
Adams et al. U.S. Pat. No. 5,358,147, assigned to the present assignee and also incorporated herein by reference, discloses a container of air freshener inserted into a shroud. The shroud includes a nozzle that is fitted over a valve stem of the container. The combination of the container and the shroud is placed within a housing. When a user wishes to spray air freshener into ambient air, the user pushes the housing, which in turn pushes the shroud and the valve stem to dispense the air freshener out of the housing.
In accordance with one aspect of the present invention, a product refill for a housing includes an actuator cap and a container of product. The actuator cap includes a base portion having a mounting end, a central actuator member having a substantially axially oriented discharge orifice, and an axially movable actuator cap portion flexibly connected to the base portion. First and second unshielded outer contact surfaces of the movable portion are separated by an arcuate distance of at least about 90 degrees. Pressure applied to both of the surfaces axially displaces the surfaces and thus the movable portion toward the mounting end in a generally non-tilting manner thereby displacing the actuator member to an actuating position thereof. A length between at least one of the outer contact surfaces and a centerline of the cap is greater than about one-quarter a largest lateral dimension across the product refill.
In accordance with a further aspect of the present invention, an actuator cap for a container of product includes a circumferential base portion having a mounting end and a circumferential movable actuator cap portion. Exterior contact surfaces of the movable portion are separated by an arcuate distance of at least about 90 degrees. A spring member connects the portions. The movable portion is deflectable relative to the base portion. Pressure applied to the surfaces axially displaces the surfaces and thus the movable portion toward the mounting end. A central actuator member includes a substantially axially oriented discharge orifice. Deflection of the movable portion displaces the actuator member to an actuating position thereof. A dimension between at least one of the contact surfaces and an axial centerline of the cap is greater than about one-quarter a largest diameter of the cap.
In accordance with a further aspect of the present invention, a product refill for a housing includes an actuator cap and a container of product. The actuator cap includes a base portion having a mounting end, a central actuator member having a discharge orifice oriented at an angle to an axial centerline of the cap wherein the angle is less than 90 degrees, and an axially movable actuator cap portion flexibly connected to the base portion. An unshielded outer contact surface of the movable portion is provided. Displacement of the contact surface, and thus the movable portion, displaces the actuator member to an actuating position thereof. A length between the outer contact surface and the axial centerline of the cap is greater than about one-quarter a largest lateral dimension of the product refill.
Other aspects and advantages of the present invention will become apparent upon consideration of the following detailed description.
Referring to
The housing 63 includes a wall 108 that decreases in cross sectional size, tapering to the discharge opening 82. The discharge opening 82 has a cross sectional size greater than a radius R (
Either of the portions 114, 116 may include protrusions 136 such as guide fins 138 having edges 140 that abut the exterior surface of the container 50 to center the container 50 within the housing 63. Either of the portions 114, 116 may include elongate openings or windows 144 that allow a user to see the container 50 when the container 50 is disposed within the housing 63. The housing 63 may include three of the windows 144 spaced apart by 120 degrees. One advantage of the windows 144 is that a user might see any written directions or graphics disposed on the container 50. Referring to
Referring to
For the housing 63, one could select any suitable cross sectional size S (
Referring to
The central adapter 80, secured to the valve stem 52, includes a nozzle member 190 having a tapered surface 192 to facilitate insertion of the valve stem 52 therein. While
Referring to
Sufficient displacement of the central adapter 80 to an actuating position thereof displaces the valve stem 52 into the container 50 such that product dispenses from the container 50, through a spray tip 240 of the nozzle member 190 and out of the housing 63. Referring also to
The actuator cap embodiments disclosed herein may be designed to reduce the likelihood of inadvertent dispensing that might result from a user inadvertently shaking or jostling the housing 63 with the container 50 disposed therein. In this regard, the flexure member 174 may be designed with a suitable degree of resilient bias acting against axial movement of the movable portion 66, and a manufacturer may increase or decrease this resistance as desired for a particular actuator cap design.
The resistance of the flexure member 174 against movement provides a reactive force against forces directing the container 50 toward the discharge opening 82, such that this reactive force must be overcome before dispensing may occur. This reactive force is advantageous in that low force levels may be insufficient to overcome same to dispense product from the housing 63. For example, such low force levels may occur from a user jostling the housing 63 while walking or manipulating the housing 63 or may arise as a user shakes the housing 63 to mix the contents of the container 50. Such jostling could cause the cap 60 to be in a condition where the movable portion 66 is moved only slightly but to a lesser extent than the actuating position thereof. Ideally, the reactive force provided by the flexure member prevents inadvertent dispensing until such time as the user intentionally applies sufficient force, such as when the user intentionally pulls the trigger 96 shown in
The foregoing embodiments may provide one or more of the following advantages.
First, because the contact surfaces 168 have a sufficiently large value of L, the surfaces 168 have an interfering relationship with the tapered wall 108, and thus, the actuator cap 60 is usable with the housing 63 despite the large discharge opening 82. (As noted above, the cross sectional size of the discharge opening 82 is greater than the container radius R.) Containers lacking contact surfaces of the length L are not usable with the housing 63. This may be useful because containers lacking the contact surfaces 168 of length L may not be designed for use with the housing 63 or the housing 63 may not be marketed for use with a particular container of product that lacks the contact surfaces 168. For example, the housing 63 may be marketed for use with a container of a specific type of insecticide having the actuator cap 60. A further advantage of the large discharge opening 82 and large value of L is that contact near the point of discharge 160 is avoided. Because the tapered wall 108 contacts the contact surfaces 168 at the distance L (or greater) from the orifice of the valve stem 52, the potential for product obstruction or impingement is minimized. This feature could be especially advantageous for some products that fan out while discharging from the container 50 as the product gets farther away from the container 50. The large cross sectional size of the discharge opening 82 would accommodate such fanning out while minimizing potential product impingement or deposition thereupon. In this regard, referring to
The product stored within the container body 56 could be any of a broad variety of products such as an air freshener, an insect control agent, a hair spray, a cleaning agent, a polishing agent, a fragrance, or other any other product stored in a container. Further, the product may be pressurized by a suitable propellant disposed within the container 50.
Referring to
It should be evident from
Table 2 provides sample dimensions for a second example according to the present invention.
Table 2 shows that L may have a value of about one-third the largest diameter of the cap 60. So, assuming the diameter D is 65.5 mm, about one-third of such diameter may range between about 20 mm and about 25 mm. L may also be greater than one-third of D. It should be noted that other values of D greater or less than 65.5 mm are possible.
The value of D of the cap 60 may be the same, similar, or substantially different than the diameter of the container 50. Referring to
The foregoing embodiments are useful for dispensing a variety of products such as insecticides, cleaning products, air treatment products (e.g., air fresheners), or other products.
Numerous modifications to the present invention will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as merely exemplary of the inventive concepts taught herein and is presented for the purpose of enabling those skilled in the art to make and use the invention and to teach the best mode of carrying out same. The exclusive rights to all modifications which come within the scope of the appended claims are reserved.
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