Dispensing – With lock or fastening seal – Inhibiting operation of flow controller or closure
Reexamination Certificate
1999-01-13
2001-06-12
Kaufman, Joseph A. (Department: 3754)
Dispensing
With lock or fastening seal
Inhibiting operation of flow controller or closure
C222S383100
Reexamination Certificate
active
06244469
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to fluid sprinkling and more particularly to a child resistant device for a trigger of a fluid dispenser.
2. Background of the Invention
A typical hand held fluid sprinkling device comprises a container with a fluid dispenser connected to the container for dispensing a fluid from the container. In many cases, the fluid dispenser has a trigger for dispensing the fluid from the container through a terminal orifice upon actuation of the trigger of the fluid dispenser.
One type of fluid dispenser includes a trigger pump for dispensing the fluid from the container upon movement of a trigger between an extended position and a retracted position. The trigger is normally biased into the extended or unattended position. The trigger pump dispenses the fluid from a terminal orifice upon the reciprocation of the trigger between the extended position and the retracted position.
Various types of child resistant devices have been proposed by the prior art for a hand held fluid sprinkling device. In order to qualify as a child resistant fluid sprinkling device, the fluid sprinkling device must contain two independent characteristics.
First, the fluid dispenser must be attached to the container in such a manner to inhibit the removal of the fluid dispenser from the container by a child. Various means are available to attach the fluid dispenser to the container as should be well known to those skilled into art.
Secondly, the fluid dispenser must be prevented from dispensing the fluid from the terminal orifice. The fluid dispenser may be prevented from dispensing the fluid from the terminal orifice either by closing the terminal orifice or by immobilizing the trigger. Many in the prior art have addressed the problem of preventing the dispensing of the fluid from the terminal orifice.
U.S. Pat. No. 3,209,949 to Gurtler discloses a dispensing device for a container of fluid under pressure, comprising a valve body mountable on said container to receive said fluid therefrom. The body has a discharge orifice and a bore extending through said valve body and communicating with said orifice. A valve sleeve movably mounts in said valve body bore and is cooperable therewith to open and close said bore. Means actuate the sleeve to pass fluid through said bore and orifice when said sleeve is moved thereby to clear said bore. A stem is axially movable in said valve sleeve, and a stem body at one end of the stem extends beyond said valve sleeve within said valve body and is adapted to be in communication with the pressure in said container, said stem has another end extending beyond said sleeve outside of the valve body and whereby pressure applied in said valve body to said stem body moves said stem body outwardly of said valve sleeve and extends said other end of the stem beyond said sleeve to indicate the magnitude of pressure in the valve body.
U.S. Pat. No. 3,602,399 to Litman relates generally to hand operated dispensers for spraying fluid from pressurized containers and is particularly concerned with such dispensers that are adapted to be carried by the user, and that provide means for more accurately directing the spray as well as providing a number of safety features preventing accidental or other discharge of fluid when not desired.
U.S. Pat. No. 3,749,286 to Douglas discloses an actuator cap for use with conventional pressurized containers having a slidable locking member which prevents accidental discharge of the container contents. The slidable locking member has a flat base having one end bifurcated. The locking member is mounted to the actuator cap so that when moved to lock position its bifurcated end wedges between the actuator and the container prevents movement of the actuator so that the container valve is not opened to discharge contents. The slidable locking member may also be provided with a sleeve-like segment attached to the base. This sleeve-like segment telescopically fits over a horizontal spout provided for the actuator cap. This modified slidable locking member has the dual function of actuator lock and spout extender.
U.S. Pat. No. 3,927,834 to Tada discloses a sprayer comprising a piston capable of being reciprocally moved in a cylindrical chamber, a lever for operating said piston, a valve for guiding a spray liquid from a container to said chamber, and a locking member for fixing said lever in a prescribed position and simultaneously allowing said piston to close said valve when the sprayer is out of use.
U.S. Pat. No. 3,973,700 to Schmidt et al. discloses a pump or spray comprised of a flexible bellows having a non-collapsible extension in which there are inlet and outlet ports. Flapper valves, integral with the extension, open and close the ports on the compression and expansion strokes of the bellows. The bellows may be finger or trigger operated.
U.S. Pat. No. 4,067,482 to Vogel et al. discloses a dispensing cap for valves for aerosol containers, comprising a stationary body designed to be secured to the container and a dispensing push button which is designed to be connected to the actuating stem of the valve, wherein the body has a deformable portion which is hingedly or pivotally mounted on the remainder of the body at its two ends and which can be displaced inwards into the body for actuating the push button, and a frangible device which acts as a tamperproof device and which initially is connected first to the deformable portion of the body at least two points lying on opposite sides of a hinge or pivotal connection of the deformable portion, and wherein the device, until the purchaser tears it off, prevents the deformable portion from being pressed inwards into the body.
U.S. Pat. No. 4,159,067 to Akers discloses a pump including components designed for fabrication by high speed injection molding from plastic material, and is adapted for mounting by a suitable closure to a container. The basic components are a base, a head and an actuator. The base provides a sealed closure with the mouth of the container and provides a support barrel for the head. The support barrel also includes structure providing an inlet check valve seat, and for supporting the dip tube. The head includes a body having a dependent support stem for latching engagement with the support barrel, and a laterally projecting hollow plunger for supporting the actuator. The actuator is essentially a hollow barrel received over the plunger to define a variable pumping chamber, having a discharge orifice at its distal end, and having a trigger handle for manipulation and pumping action by the user. A compression spring within the pumping chamber assists the pumping action. These basic components include coacting structure for latching the plunger in a locked condition where the container can be shipped with the pump assembly attached and leakage is prevented, and wherein the latching structure is designed to inhibit release of the plunger to the pumping position by children. As an accompanying structure, the pump base and container may have coacting structural features for latching the pump assembly to the container in a manner to inhibit removal of the pump assembly from the container by children.
U.S. Pat. No. 4,204,614 to Reeve discloses a fluid dispenser including an actuator containing fluid passages defining a discharge path for fluid from a supply container to a discharge orifice, a needle valve lying adjacent the discharge path, a nipple surrounding the needle valve and a nozzle cap having an end wall containing a discharge orifice and being threadedly engaged with the nipple for movement of the end wall toward and away from the valve upon cap rotation. Discharge through the orifice may be positively shut “off” upon rotation of the cap which causes the valve to be seated against the discharge orifice, and the nozzle cap may be locked in an “off” position upon engagement between a spring biased tab provided on the actuator and an inwardly extending shoulder provided on the skirt of the cap. A ramp member on the cap includ
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