MXPA97004790A - Children's proof insurance for asper trigger - Google Patents

Abstract

The present invention relates to removable safety means for use with a pump sprayer driven by a trigger, the sprayer has a pump body that includes a pump cylinder, a pump piston for reciprocal movement with said cylinder to define a variable volume pumping chamber, a trigger lever pivotally mounted on said pump body and having tongue means engageable with said piston for reciprocal movement thereof by means of the manual actuation of the trigger, said secure means comprise a body with a body portion extending between a lower side of said lever and a confronting portion of said pump body, in abutting engagement with it to prevent activation of the trigger, said body has a spring-loaded clamp integrally with said portion of body, for the removable securing of said insurance means to the sprayer, characterizes Said because: said body portion comprises bearing ridges to be placed in abutting engagement with said lower side of said lever and with said confronting portion of said pump body, when said securing means are secured to the sprayer, said clamp driven by spring is capable of actuating said tongue means of said lever and said spring-loaded clamp protrudes from said body portion separated from said rebounds.

Description

CHILDREN'S PROOF INSPECTION FOR SPRINKLER TRIGGER This invention relates to a removable latch for use with a trigger-driven pump sprayer conforming to the pre-characterized part of claim 1. This invention further relates to a pump sprayer conforming to the pre-characterized part of claim 10.

As the use of trigger-driven pump sprayers becomes more widely used, the need arises to provide a simpler and more effective cash insurance to immobilize the trigger action to make the supply pack resistant to children especially when dispensing liquids. toxic as they are the cleaners of furnaces and in the supply of poisonous products like the insecticides. It is desirable to make said sprinkler with trigger against children by requiring at least two operations to remove the necessary insurance.

Designs are known to secure the pump in an inoperative position, removing the safety requires a two-step process that can not be carried out easily by a child. Many of these child resistant devices for trigger sprinklers, however, require the tool assembly of one or more parts of the sprayer to accommodate the insurance, which is expensive. In addition, the redesigned part or parts of the sprayer to accommodate child-proof insurance could result in added assembly costs.

The patent in US-A-5, 114,049 shows a trigger sprayer for mounting to the neck of a container containing a fluid to be dispensed by the action of a trigger.

It is an object of the invention to provide a removable insurance according to the precharacterised part of claim 1 which allows to make a sprinkler with child-proof trigger and to provide a pump sprinkler according to the pre-characterized part of claim 10.

This object is achieved by the characteristics of the characterizing clause of claim 1 and claim 10, respectively.

This removable safety prevents the action of the trigger by acting as a clamp against the pull of the trigger. It can be added selectively to sprayers for hazardous products, allowing the sprayer to be provided with a means to make it a child-proof sprayer even when it has already been purchased. On the other hand, customers who do not have the need for child-proof spraying can remove the safety as a fastener to subsequently maintain the sprayer in a permanent condition of suitability for use. Preferably the insurance is made of molded plastic that is inexpensive and allows to manufacture the insurance in a unitary construction.

The body portion may be in the form of a smooth platform with opposable flap flanks protruding against the pump body and the underside of the trigger lever.

The spring-loaded fastener may be in the form of a pair of lever arms positioned on opposite sides of the body portion of the latch, the elastic bridge members interconnect the arms with the body portion between the opposite ends of the arms and arms of the levers defining opposing jaws on one side of the bridge members to come in contact with the tongue. The arms of the levers define opposite handles that when pressed together force the jaws to open.

The jaws have leaks at the free end thereof to contact the tongue of the lever and the body portion of the fastener may have a projection extending into the protruding coupling with a lower side of the tongue to stabilize the fastener when it is in its place.

The pump sprayer provided with a safety device in accordance with the invention is child resistant in that a two-step mechanism is required to allow the fluid to be dispensed, thus avoiding annoying dispersion when said pump sprayer is handled by a child.

A copy of the invention will be described subsequently in greater detail with reference to the accompanying drawings.

Figure 1 shows a side elevational view, partially in section, of a trigger sprayer provided with the present invention.

Figure 2 shows a perspective view of the insurance according to the invention.

Figure 3 shows a sectional view taken substantially along line 3-3 of Figure 1.

Referring now to the drawings in which similar characters refer to similar and corresponding parts in all views, a trigger-operated sprinkler of known construction, generally designated 10 in Figure 1, has a closure 11 for mounting the sprinkler to the neck of a container 12 of the product to be sprayed. The trigger sprayer may be structured for operation, for example, essentially the same as US-A-5, 114,049.

The sprayer includes a pump body 13 to which the closure is rotatably mounted, the pump body is surrounded by a mantle 14 and has a nozzle cap 15 rotatable about the end of its nozzle (not shown), the cap The nozzle has a discharge orifice (not shown) through which the liquid product is pumped from the container.

The pumping is effected by the provision of a trigger lever 16 pivotally mounted to the pump body in some normal manner, the lever having a tongue or pylon 17 which engages with the pump piston, more clearly illustrated in FIG. already cited US-A-5, 114,049, for reciprocating within the cylinder of the pump 18 to define a pumping chamber with variable volume (not shown).

The removable safe according to the invention, generally designated 19, is installed in place according to Figure 1 to secure the lever of the trigger against the action and to make the sprayer resistant to children and is illustrated in greater detail in perspective in FIG.

Figure 2 The latch 19 has a molded plastic unitary construction body comprising a body portion 12 which may be in the form of a flat platform 21 which, as illustrated in Fig. 1, extends between the lower side 20 of the lever of the housing. trigger and an opposite portion of the pump body like the cylinder 18. The platform 21 has a front flank 22 integrally molded in itself and complementary in shape with that of the lower side 20 of the lever. The platform 21 also has a rear flange 23 molded integrally complementary in inclination to that of the end edge of the cylinder of the pump 18. In the secured position of the trigger of Figure 1, the flanks 22 and 23 are in projecting engagement with the lower side of the trigger lever and with the outer edge of the pump cylinder. The flanks can help to stabilize the safety while it is in place and also act in a manner similar to rails for an easier placement of the safety 19.

According to the invention, the latch is removably secured to the tongue 17 by the provision of an integrally molded spring-driven clamp 24.

It should be noted that the tongue is normally structured with a pair of opposite triangular-shaped side walls 25 and an intervening net 26. The tips of the side wall 25 rest against the outer edge of the pump piston and the network 26 normally extends slightly inside the hollow piston for stabilization of this protruding coupling.

The spring-driven clamp 24 may be in the form of a pair of levers arms 27, 28 respectively placed on opposite sides of the body portion 21, the elastic bridge members 29 interconnecting the arms with the portion 21 between the opposite ends of the arms. arms. The levers define opposing jaws 31, 32 which can have leaks 33 at the free ends thereof to come into contact with the tongue 17 at the upper ends of the side walls 25 (see Figure 3). The leaks, as illustrated more clearly in Figure 2, have internal sloping edges complementary to that of the sloping edges of the side walls 25.

In addition, the arms of the lever define opposite handles 34 placed on the side of the bridge members opposite the side on which the jaws are placed.

Also, as illustrated in Figures 2 and 3, the platform 21 has a projection or extension 35 that rests on the same plane and extends within a protruding coupling with the underside of the network 26 when the latch is assembled in its site.

In the assembled condition, the jaws 31, 32 are elastically coupled to the side walls 25 of the tongue, while the leaks 33 engage the upper edges of the side walls 25, and the projection 25 lies against the underside of the 26 network of the tongue. And, flanks 22 and 23 respectively lie against the underside of the trigger lever and the outer edge of the pump cylinder, so that the safety catch according to the invention is stabilized when it is secured in place and functions to prevent trigger action. The projection 35 and flanks 22, 23 cooperate to harden the latch 19 to resist deformation or slip, even if a greater force is applied to the lever, for example, by a child.

To unlock the trigger, the handles 34 are pressed together by applying a force of the fingers in the direction of the arrows illustrated in Figure 3. The elastic bridge members 29 act as support points which allow the jaws 31 and 32 to open to the separating, as illustrated in dotted lines in Figure 3. The jaw exhausts 33 therefore disengage from the side walls 25 on the tongue which allows the latch 19 to pull downwardly in the opposite direction of the pump sprayer while Finger pressure continues to be applied against the handles 34.

The insurance according to the invention is of construction of a piece of molded plastic that is easy and economical in its manufacture. And, the insurance, being removable, is adaptable for use with a standard trigger sprayer without the need to redesign any part of it to accommodate the insurance.

Modifications and variations of the present invention that a person skilled in the art would consider making in the light of the example and previous teachings, for example, modifications to materials, form, dimensions, proportions or use, should be understood as comprised in the discovery of the invention as specifically described.

Claims (10)

1. CLAIMS 1. Removable insurance means for use with a trigger-driven pump sprayer (10), the sprayer has a pump body (13) that includes a pump cylinder (18), a reciprocating pump piston inside said cylinder ( 18) to define a variable volume pumping chamber, a trigger lever (16) mounted pivotally on said pump body (13) and having a tongue (17) engageable with said piston for reciprocation thereof by manual operation of the trigger, characterized by a body with a portion of the body (21) extending between a lower side (20) of said lever (16) and an opposite portion of said pump body (13) in protruding engagement therewith; preventing trigger action, said bar has a spring-loaded clamp (24) integrally with said portion of bar (21) and in contact with said tab (17) to removably secure said bar to the sprayer (16).
2. 2. The insurance according to claim 1, wherein said portion of (21) comprises a smooth platform having opposite resting flanks (22, 23) that lie pedendicular to said platform in projecting engagement with said lower side (20) of said lever (16) and with said opposite portion of said body (13). ) when said insurance is insured to the sprayer (10).
3. 3. The safety according to claim 1 or 2, wherein said spring-driven clamp (24) comprises a pair of lever arms (27, 28) respectively on opposite sides of said body portion (21), elastic bridge members (29). ) interconnecting said arms (27, 28) with said body portion (21) between opposite ends of said arms (27, 28), said lever arms (27, 28) defining opposed jaws (31, 32) on one side of said bridge members (29) to contact said tongue (17) and said lever arms (27, 28) define opposite handles (34) on one side of said bridge members (29) opposite said one side, said handles (34) when pressed together force said jaws (31, 32) to open.
4. 4. The safety according to claim 2, wherein said spring-biased clamp (24) comprises a pair of lever arms (27, 28) respectively on opposite sides of said platform, elastic bridge members (29) interconnecting said arms (27). , 28) with said platform between opposite ends of said arms (27, 28), said lever arms (27, 28) define opposite jaws (31, 32) on one side of said bridge members (29) to come into contact with said tab (17) and said lever arms (27, 28) define opposite handles (34) on one side of said bridge members (29) opposite said one side, said handles (34), when pressed together force said jaws (31, 32) to open.
5. 5. The insurance according to claim 4, wherein said lever arms (27, 28) lie substantially parallel to said platform, said bridge members (29) extending pedendicular to said platform and said jaws (31, 32) have leaks (33) to engage said tongue (17).
6. 6. The insurance according to claim 1 or 2, wherein said clamp (24) includes jaws (31, 32) on opposite sides of said body portion (21), said jaws (31, 32) having leaks in contact with said tongue (17).
7. 7. The insurance according to claim 6, wherein said clamp (24) further includes handles (34) integral with said jaws (31, 32) when pressed together.
8. 8. The safety according to claim 6, wherein said portion of the body (21) has a projection (35) extending into protruding engagement with a lower side of said tongue (17) as said leaks (33) enter contact with said tongue (17).
9. 9. The insurance according to one of claims 1 to 8, wherein the body is molded plastic and of unitary construction.
10. 10. Sprinkler with pump, which has a pump body (13) that includes a pump cylinder (18), a reciprocating pump piston inside said cylinder (18) to define a variable volume pump chamber, a lever trigger (16) mounted pivotally on said pump body (13) and having tongues (17) engageable with said piston for reciprocation thereof by manual action of the trigger, characterized by a safety device (19) according to one of the claims of 1 to 9 that is removably attached to it, thus preventing the action of the trigger acting as an obstacle against the action of the trigger. EXCERPT OF THE INVENTION The invention features a removable safe (19) for use with a sprayer with trigger-driven pump (10), the sprayer has a pump body (13) that includes a pump cylinder (18), a pump piston reciprocal inside said cylinder (18) to define a variable volume pumping chamber, a trigger lever (16) mounted pivotally on said pump body (13) and having tongues (17) engageable with said piston for reciprocity of them by manual action of the trigger. Said insurance achieves the objective of making it possible to make a child-resistant sprayer by means of a body with a portion of the body (21) extending between a lower side (20) of said lever (16) and an opposite portion of said pump body. (13) in protruding engagement with this to prevent the action of the trigger, said bar has a spring-loaded clamp (24) integral with said barrel portion (21) and in contact with said tab (17) to removably secure said sure to the sprayer (10). The invention also features a pump sprayer with childproof safety means (19) removably coupled therewith, thus preventing the action of the trigger acting as an obstacle against the action of the trigger.