초록 ▼

A fluid dispenser is disclosed for dispensing a fluid from a pouch having a discharge passage that extends along a tortuous path. The dispenser has a dispenser station and dispenser mechanism in the dispenser station. In one aspect the dispenser mechanism comprises a backstop on one side of the disp

A fluid dispenser is disclosed for dispensing a fluid from a pouch having a discharge passage that extends along a tortuous path. The dispenser has a dispenser station and dispenser mechanism in the dispenser station. In one aspect the dispenser mechanism comprises a backstop on one side of the dispenser path and a cam operated cylindrical roller confronting the backstop located on the other side of the dispenser path. The roller is attached to a roller bracket which is pivotally attached to the interior of a hollow pushbutton. The pushbutton is mounted in an opening in the dispenser front cover. Springs are attached to the bracket and the front cover which maintain the roller against the flexible dispenser compartment of the pouch. Depressing the pushbutton forces the roller to trap the upper portion of the pouch flexible dispenser compartment between the roller and backstop to initially seal the dispenser compartment at its upper end and further pushbutton action forces the roller down the dispenser compartment thereby causing expulsion of the fluid trapped in the dispenser compartment.

대표청구항 ▼

In a fluid dispenser for dispensing a fluid from a flexible dispenser compartment of a pouch of the type having a discharge passage that extends along a tortuous path to a discharge opening at a lower end of the pouch, the fluid dispenser having a housing comprising a dispenser station through which

In a fluid dispenser for dispensing a fluid from a flexible dispenser compartment of a pouch of the type having a discharge passage that extends along a tortuous path to a discharge opening at a lower end of the pouch, the fluid dispenser having a housing comprising a dispenser station through which the fluid is to be dispensed along a dispenser path that extends therethrough, the improvement of the fluid dispenser comprising: (a) said dispenser housing including means for supporting the pouch; (b) backstop on one side of the dispenser path below said support means; (c) cam means having an arcuate face portion confronting the backstop and located on the other side of the dispenser path; (d) pushbutton means confronting the backstop and engaging said cam means, the pushbutton means being pivotally attached to said housing, said cam means being pivotally coupled to said pushbutton means; (e) spring bias means coupled between said cam means and said dispenser housing, wherein pushing said pushbutton means toward said backstop causes said cam means to pivot with respect to said pushbutton means and to move downwardly along said backstop and against the action of said spring bias means with said flexible dispenser compartment between said cam means and said backstop thereby expelling a quantity of fluid from said dispenser; (f) a view port for looking into the interior of said dispenser station: and (g) indicator means engaging to said pouch when said pouch is supported within said dispenser housing for indicating when the pouch has been substantially depleted of fluid and in need of being replaced, wherein said indicator means is a visual indicator means comprising an arm with opposed ends, a visually distinctive portion mounted at one end of the arm and a pouch engagement member attached to the other end of the arm, the arm being pivotally mounted in close proximity to said pouch with said pouch engagement member bearing against said pouch so that when the pouch is substantially filled the visually distinctive portion is not viewable through said view port and as fluid is depleted from said pouch the pouch collapses causing the arm to pivot until the visually distinctive portion comes into view through said view port.