초록 ▼

A postmix beverage dispenser which includes pair of one-way valves to provide more continuous flow of concentrate into a metered water flow. The configuration according to the present invention has the cost advantages of a single-acting pump and the smooth-flow advantages of a double-acting pump. Th

A postmix beverage dispenser which includes pair of one-way valves to provide more continuous flow of concentrate into a metered water flow. The configuration according to the present invention has the cost advantages of a single-acting pump and the smooth-flow advantages of a double-acting pump. The single-acting reciprocating pump has a flow pattern that is similar to double-acting reciprocating pumps. The pump readily folds up into the package to facilitate shipping and can be constructed of rigid plastic materials to make for easier loading and unloading the package into the dispenser. The pump can be constructed primarily from inexpensive commodity plastics.

대표청구항 ▼

[We claim:] [1.]a body, said body defining a first fluid inlet port, a second fluid inlet port, a mixed fluid outlet port, and an interior chamber configured for at least partial mixing of said first and second fluids;a pump member configured for movement relative to said body, said movement being o

[We claim:] [1.]a body, said body defining a first fluid inlet port, a second fluid inlet port, a mixed fluid outlet port, and an interior chamber configured for at least partial mixing of said first and second fluids;a pump member configured for movement relative to said body, said movement being oscillating linear motion alternating between a first linear direction and a second linear direction, said pump member including a pumping portion configured for said oscillating linear motion at least partially within said interior chamber of said body;a first one-way valve within said body, said first valve configured to allow fluid flow from said first fluid inlet port to said interior chamber of said body; anda second one-way valve within said pump member, said second valve configured to allow mixing of said first and second fluids within said interior chamber,such that movement of said pump member in said first direction tends to cause flow though said first valve from said inlet port to said interior chamber, and movement of said pump member in said second direction tends to cause mixing of said first and second fluids within said interior chamber.