FR2487016A1 - METHOD FOR PREVENTING PREMATURE USE OF A MANUALLY CONTROLLED PUMP AND PUMP IMPLEMENTING SAID METHOD - Google Patents

Abstract

THE INVENTION CONCERNS THE INDUSTRY OF SMALL MANUAL PUMPS. A TEARABLE RING 8, INTERCALED BETWEEN THE BODY 3 OF THE PUMP AND THE PUSH BUTTON 1 FOR ACTIVATING ITS PISTON 2 PREVENTS THE RING FROM REACHING A ZONE 5 OF DECOMPRESSION AT THE COMPRESSION LIMIT STROKE. APPLICATION ESPECIALLY TO SPRAY PUMPS FOR PERFUMERY PRODUCTS, MEDICINES AND MAINTENANCE PRODUCTS.

Description

1 2487016

  - - úr-lp & cler premature use of a pump

  t manual control and pump implementing this method.

  The present invention relates to the industry of small manual pumps of the type used, especially in perfumery as well as for drugs and various cleaning products. It is important, especially in the stores said "to

  large area "and" self-service ", which can not be

  pumps without tearing off a warranty capsule so that buyers do not have the inconvenience of acquiring a

opened container.

  Various means of immobilizing the piston have been proposed

  pumps as well as the guaranty caps

  screwing the piston. However, these guarantee systems

  the disadvantage of not allowing certain manufac-

  cation of assembled pumps, because of the immobilization of their piston. The purpose of the invention is to overcome the drawbacks of conventional pumps by making it possible to prevent untimely use of the pump while permitting a displacement of the pump.

  sufficient piston to ensure certain checks.

  The subject of the invention is a method for preventing a

  premature use of a manually operated pump with

  at the end of the compression stroke, an easy decompression

  both its priming. The compression stroke of the pump piston is limited to stop before said piston reaches the

decompression zone.

  The subject of the invention is also a compression pump

  manual control with guarantee of non-prior use according to the pump

  the aforementioned method. This / has a releasable limit stop

  both the driving stroke of his piston.

  The tear-off abutment can be advantageously constituted

  killed by a tear-off annular strip interposed between the body of said pump and the actuating pusher of its piston. In an advantageous embodiment, the tearable strip is integral with the base for fixing the pump.

on a container.

  The invention will be better understood from the point of view of

  detailed description that will follow and review the drawings

  annexed which represent, by way of non-limiting example, a

  embodiment of the invention. In these drawings: -

  - Figure 1 is an elevational view and partial-

  in section of a pump according to the invention, in position

rest, mounted on a bottle;

  FIG. 2 is a view similar to that of FIG.

  re 1, of the same pump in safety position, piston depressed;

  FIG. 3 illustrates the tearing off of the ring of

  guarantee of inviolability; FIG. 4 is a view similar to that of FIG. 2 showing the operation of the pump after tearing up

of the tamper evident ring.

  The pump shown in FIG.

  fuser 1 also serving to actuate the piston 2 in the pump body 3, against a return spring 4. At the end of the driving stroke of the piston 2, the body 3 of the pump has an annular groove 5 which allows the decompression of the air initially enclosed in the pump, and thereby the priming of the pump by suction of liquid during the return stroke of the piston 2. The pump body 3 is subject in a conventional manner on the neck of a container 6, by a base 7. This base 7 is extended by a tamper-proof ring 8 which has a longitudinal portion 9 weakened between a cutout 10 and a

baque ll uprooting.

  Small radial lugs 10 center the stem of

diffuser 1.

  As shown in FIG. 2, when the ring 8

  is in place and that the diffuser 1 is fully depressed, the piston

  your 2 does not enter the decompression throat 4 and the

  the pump can not be done.

  Thus, it is not possible to pump liquid

in the container 6.

  When tearing the ring 8, as shown on

  FIG. 3 frees the stroke of the piston, which can then penetrate

  trer, as shown in Figure 4, in the decompression groove

  pressure 5 and thus ensure the suction of the liquid contained

  C 1 <r (container 6 and its normal distribution.

  Of course, the invention is in no way limited

  in the embodiment described and shown, it is susceptible to

  many variants accessible to those skilled in the art, followed by

  the intended applications and without departing from

framework of the invention.

  This is how ring 8 can be solid

  not the base 7 but the lower edge of the pusher

1.

  According to a variant, the ring 8 can be independent

  both the diffuser and the pump base.

Claims (4)

  1. A method for preventing premature use of a manually operated pump having, at the end of the race,   compression, a decompression facilitating its priming,   riser by limiting the compression stroke of the piston of said pump to stop it before said piston reaches the decompression zone.   2. Manual pump with a guarantee of not being used   prior art according to the method of claim 1,   characterized in that it comprises a stop (8) releasable limiting   the driving stroke of its piston (2).   Pump according to Claim 2, characterized   in that the releasable abutment is constituted by an annular strip   tearable sheet (8) interposed between the body (3) of said   pump and the pusher (1) for actuating its piston.   4. Pump according to revendicaton 3, characterized in that the tearable strip is secured to the base (7) of   attaching said pump to a container (6).