Liquid dispensing system
First Claim
1. A manually energized dispensing system for dispensing a fluid contained in a non-pressurized container, the dispensing system comprising a nozzle through which fluid to be dispensed exits, a dispensing head comprising a housing, a pump mounted in the housing, and a pump actuation mechanism, the pump comprising a rotor rotatable and axially displaceable with respect to a stator, the rotor comprising first and second axial extensions of different diameters, mounted in corresponding chambers of the stator, first and second seals mounted in the stator housing and sealingly surrounding the first and second axial rotor extensions, the rotor extensions comprising liquid supply channels that, in conjunction with the sealing rings, operate as valves that open and close communication between an inlet of the pump connected to the inside of the container and the pump chambers, respectively, the pump chambers and an outlet of the pump connected to the dispensing head nozzle, as a function of the angular displacement of the pump rotor, characterized in that the pump rotor is coupled mechanically to the actuation mechanism and the actuation mechanism is configured to be manually operated to release or to drive the pump rotor to dispense fluid or to block the pump rotor to stop dispensing fluid, respectively, and the dispensing system comprises an energy storage mechanism coupled to the pump rotor, and a manually actuable energy storage loading mechanism coupled to the energy storage mechanism.
3 Assignments
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Accused Products
Abstract
A manually energized dispensing system containing a dispensing head (1) which has a housing (2), a nozzle, a pump (4) mounted in the housing, and a pump actuation mechanism (3) is provided. The pump has a pump rotor (13) and a stator (12). The pump rotor has two axial extensions (17, 18) of different diameters, mounted in corresponding chambers (15, 16) of the stator, and first and second seals (19, 20) mounted in the stator housing and surrounding the first and second axial rotor extensions. The rotor extensions comprising liquid supply channels (22, 24), in conjunction with the seals operate as valves that open and close communication between an inlet of the pump connected to the inside of a container (7) and the pump chambers, respectively. The pump chambers are operated as a function of the angular displacement of the pump rotor.
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Citations
19 Claims
- 1. A manually energized dispensing system for dispensing a fluid contained in a non-pressurized container, the dispensing system comprising a nozzle through which fluid to be dispensed exits, a dispensing head comprising a housing, a pump mounted in the housing, and a pump actuation mechanism, the pump comprising a rotor rotatable and axially displaceable with respect to a stator, the rotor comprising first and second axial extensions of different diameters, mounted in corresponding chambers of the stator, first and second seals mounted in the stator housing and sealingly surrounding the first and second axial rotor extensions, the rotor extensions comprising liquid supply channels that, in conjunction with the sealing rings, operate as valves that open and close communication between an inlet of the pump connected to the inside of the container and the pump chambers, respectively, the pump chambers and an outlet of the pump connected to the dispensing head nozzle, as a function of the angular displacement of the pump rotor, characterized in that the pump rotor is coupled mechanically to the actuation mechanism and the actuation mechanism is configured to be manually operated to release or to drive the pump rotor to dispense fluid or to block the pump rotor to stop dispensing fluid, respectively, and the dispensing system comprises an energy storage mechanism coupled to the pump rotor, and a manually actuable energy storage loading mechanism coupled to the energy storage mechanism.
- 15. A manually energized dispensing system for dispensing a fluid contained in a non-pressurized container, the dispensing, system comprising a nozzle through which fluid to be dispensed exits, a dispensing head comprising a housing, a pump mounted in the housing, and a pump actuation mechanism, the pump comprising a rotor rotatably and axially displaceable with respect to a stator, the rotor comprising first and second axial extensions of different diameters, mounted in corresponding chambers of the stator, first and second seals mounted in the stator housing and sealingly surrounding the first and second axial rotor extensions, the rotor extensions comprising liquid supply channels that, in conjunction with the sealing rings, operate as valves that open and close communication between an inlet of the pump connected to the inside of the container and the pump chambers, respectively, the pump chambers and an outlet of the pump connected to the dispensing head nozzle, as a function of the angular displacement of the pump rotor, characterized in that the pump rotor is coupled mechanically to the actuation mechanism and the actuation mechanism is configured to be manually operated to release or to drive the pump rotor to dispense fluid or to block the pump rotor to stop dispensing fluid, respectively, and wherein the actuation mechanism is coupled to the pump rotor and configured to directly drive the pump rotor to dispense fluid during manual actuation of the actuation mechanism.
Specification