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Fluid product dispensing device

  • US 7,363,924 B2
  • Filed: 11/23/2001
  • Issued: 04/29/2008
  • Est. Priority Date: 11/24/2000
  • Status: Expired due to Term
First Claim
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1. A fluid dispenser device comprisinga reservoir (1) containing fluid and a propellant gas,a metering valve (2) mounted on said reservoir and comprising a metering chamber and a valve member (3) mounted to move between a dispensing position and a rest position, andan automatic trigger system for actuating said valve, said trigger system comprising a resilient element (10) formed by or secured to a spring, said resilient element capable of being moved manually by the user into a cocked position in which it is held under tension, actuation of the trigger system releasing said resilient element (10) which then moves to an actuating position while exerting a force adapted to moving the valve member (3) of the valve (2) towards its dispensing position, said resilient element (10) then being returned manually by the user from its actuating position to its rest position in which it no longer urges said valve member towards its dispensing position,said fluid dispenser device further comprises a mechanical valve member release system which co-operates with the reservoir (1) or with the valve member (3) of the valve (2) so that, after dispensing the fluid contained in the metering chamber of the valve, said valve member (3) is mechanically released from the force exerted by said resilient element (10) of the trigger system, so that, after the device is actuated, said valve member (3) is returned to its rest position by the return spring of the valve, independently of the position of said resilient element,said valve member release system comprising a locking element (20) co-operating with one of the valve member (3) and the fluid reservoir (1), said locking element (20) being mounted to move between a locking position, in which the valve member (3) can be brought into its dispensing position by said resilient element (10) of the trigger system, and an unlocking position, in which the valve member (3) is brought into its rest position independently of the position of said resilient element (10), said locking element (20) being urged to its unlocking position after the trigger system has been actuated,the valve member release system including a retaining member (30) that can be moved from a retaining position in which it retains said locking element (20) in its locking position, and a non-retaining position in which it does not retain said locking element (20) in its locking position, said retaining member (30) being moved towards its non-retaining position when the valve member (3) reaches its dispensing position,said valve member release system including a control element (40) co-operating firstly with the valve member (3) and secondly with the retaining member (30) so that when the valve member (3) reaches its dispensing position, the control element (40) makes it possible to move the retaining member (30) to its non-retaining position so that the locking element (20) is moved into its unlocking position, and the valve member is returned to its rest position by the return spring of the valve, said control element being a sleeve surrounding said retaining member externally.

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