Patent ID: 6413246
Filing Date: 2002-07-02
Classification: A61M,B05B

Abstract:
A metered, mechanically propelled, liquid dispenser which comprises:(a) a main body cylinder having liquid and liquid advancing means for advancing the liquid into a metered dosage dispensing chamber; (b) a metered dosage dispensing chamber for receiving a metered amount of the liquid and including a dispensing nozzle for dispensing the liquid out of said liquid dispenser; (c) a connecting means for connecting said main body cylinder to said metered dosage dispensing chamber, wherein said connecting means is located on a forward end of said liquid dispenser and permitting an amount of the liquid received from said main body cylinder to be advanced into said metered dosage dispensing chamber by advancing said advancing means; (d) a metered dosage dispensing chamber stop located within said metered dosage dispensing chamber, and being adapted to stop a trigger means when moved; (e) trigger means located partially within said metered dosage dispensing chamber and having a trigger stop wherein said trigger stop stops a plunger means from moving after a spring means is caused to move to an unstressed position and move said plunger means toward said trigger stop, and wherein said trigger stop is separate from said metered dosage dispensing chamber stop; (f) a cocking mechanism located in a rear end of said liquid dispenser and having a lock means, a stressed position means and a resting position means wherein said cocking mechanism is initially kept in a locked position when said lock means is located at said stressed position means; (g) plunger means attached to said cocking mechanism and being sized and shaped to hit against said trigger stop when said plunger means is caused to be move forwardly within said liquid dispenser; (h) spring means cooperating with said plunger means and said cocking mechanism; wherein when said cocking mechanism is locked, in order to fill said metered dosage dispensing chamber and to trigger said trigger means, said liquid advancing means is advanced to advance the liquid into said metered dosage dispensing chamber and then said cocking mechanism is slowly rotated while holding said main body cylinder vertically and said lock means is moved away from said stressed position means and into said rest position means thereby causing said plunger means to be forced by said spring means and to push said trigger stop and to advance said trigger means to said metered dispensing chamber stop, thereby forcing the liquid rapidly out of said metered dosage dispensing chamber through said dispensing nozzle, and wherein a first firing distance of said plunger means to said trigger stop and a second firing distance of said trigger means to said dispensing chamber stop are such that said second firing distance may be relatively short in comparison to said first firing distance whereby the liquid moves rapidly from said metered dosage dispensing chamber and out of said dispensing nozzle.