초록 ▼

An apparatus for the simultaneous dispensing of two liquids from two separate liquid reservoirs at least two actuations are necessary in order for the venting of the interior and relieving of the back pressure in the liquid reservoirs. The first actuation is accomplished by rotating a valve having t

An apparatus for the simultaneous dispensing of two liquids from two separate liquid reservoirs at least two actuations are necessary in order for the venting of the interior and relieving of the back pressure in the liquid reservoirs. The first actuation is accomplished by rotating a valve having two mating valve members for opening and closing two sets of vertically extending passageways. The first set of passageways allows liquid to flow from the two liquid reservoirs to the intake stem of the spray pump dispenser. The second set of passageways connects both liquid reservoirs to a venting passageway. The second actuation is accomplished by pulling the trigger on the spray pump dispenser so the venting passageway is exposed to the ambient atmosphere. The venting passage reseals when the trigger returns to its rest position.

대표청구항 ▼

An apparatus for simultaneously dispensing multiple liquids comprising: a container having two liquid reservoirs, each reservoir being capable of storing a separate liquid; a trigger operated liquid dispensing pump including a pump body having an outwardly opening bore, a piston having a peripheral

An apparatus for simultaneously dispensing multiple liquids comprising: a container having two liquid reservoirs, each reservoir being capable of storing a separate liquid; a trigger operated liquid dispensing pump including a pump body having an outwardly opening bore, a piston having a peripheral sealing means which traverses along said bore, said piston defining a variable sized compartment within said bore, an inlet port and an outlet port for delivering liquid into and out of the variable sized compartment, a manually actuated trigger coupled to said piston for causing said piston to traverse from a non-pumping position to a pumping position within said bore as said trigger is actuated, and a venting path extending through said pump body and opening at one end into the bore at a point along the path of travel of said sealing means of said piston when said manually actuated trigger is actuated and, when said sealing means of said piston is in a non-pumping position, said venting path is prevented from communicating with the ambient atmosphere by said sealing means and when said piston is moved to a pumping position, said venting path is permitted to communicate with the ambient atmosphere; and a valve assembly for opening and closing a first and a second set of passageways, said first set of passageways comprising a plurality of liquid transfer passageways, each liquid transfer passageway for transferring fluid from one of said liquid reservoir to said inlet port of said liquid dispensing pump, said second set of passageways comprising a plurality of venting passageways, each venting passageway for coupling a liquid reservoir to said venting path of said liquid dispensing pump.