Sequentially activated multi-diaphragm foam at-a-distance dispenser systems

A foam dispenser comprising:

• a housing;
• a reservoir for holding a foamable liquid;
• a sequentially operated multi-diaphragm pump;
• the sequentially operated multi-diaphragm pump having
• a liquid pump chamber;
• two or more air pump chambers;
• and
• a single piece manifold;
• the manifold having;
• a liquid outlet port;
• a liquid outlet valve;
• a liquid inlet port;
• a liquid inlet valve;
• an air outlet port;
• and
• one or more air outlet valves;
• an elongated liquid dispensing conduit in fluid communication with the liquid outlet port;
• an elongated air dispensing conduit in fluid communication with the air outlet port;
• a mixing chamber located remotely from the sequentially operated multi-diaphragm pump;
• the mixing chamber having a mixing chamber liquid inlet, a mixing chamber air inlet, and a foam outlet;
• wherein the elongated liquid dispensing conduit is in fluid communication with the mixing chamber liquid inlet;
• wherein the elongated air dispensing conduit is in fluid communication with the mixing chamber air inlet;
• and
• an outlet nozzle located downstream of the foam outlet of the mixing chamber;
• wherein the outlet nozzle is located above at least a portion of the reservoir.

A foam dispenser comprising:

• a housing;
• a reservoir for holding a foamable liquid;
• a sequentially operated multi-diaphragm pump;
• the sequentially operated multi-diaphragm pump having
• a liquid pump chamber;
• two or more air pump chambers;
• and
• a single piece manifold;
• the manifold having;
• a liquid outlet port;
• a liquid outlet valve;
• an air outlet port;
• and
• one or more air inlet valves;
• a liquid inlet port;
• a liquid inlet port valve;
• wherein the liquid inlet port and the liquid outlet port are parallel to one another;
• an elongated liquid dispensing conduit in fluid communication with the liquid outlet port;
• an elongated air dispensing conduit in fluid communication with the air outlet port;
• a mixing chamber located remotely from the sequentially operated multi-diaphragm pump;
• the mixing chamber having a mixing chamber liquid inlet, a mixing chamber air inlet, and a foam outlet;
• wherein the elongated liquid dispensing conduit is in fluid communication with the mixing chamber liquid inlet;
• wherein the elongated air dispensing conduit is in fluid communication with the mixing chamber air inlet;
• and
• an outlet nozzle located downstream of the foam outlet of the mixing chamber;
• wherein the outlet nozzle is located above at least a portion of the reservoir;
• and
• wherein the mixing chamber receives a series of at least 10 pulses of fluid, wherein each series is in the form of a sequence of a liquid pulse followed by two or more air pulses.