Pump
First Claim
1. A pump comprising a tubular container containing a dispense material, an outlet therefrom and an actuator arranged to alternate between first and second configurations in response to a change in the pump'"'"'s environment wherein said change in the pump'"'"'s environment comprises a change in the thermal, chemical, electromagnetic, moisture, light, sound or electrical field conditions of the pump'"'"'s surrounding environment and wherein the actuator is arranged to advance stepwise within the container towards the outlet, so as to cause portions of dispense material to be expelled through the outlet, and further wherein the pump has no connection to electrical power or source of electrical power wherein the actuator comprises a first advancing means, and second advancing means, each being engaged within the tubular container such that they can move towards the outlet but not away from it in normal use.
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Accused Products
Abstract
A pump comprising a container containing a dispense material, an outlet and an actuator arranged to alternate between a first and a second configuration in response to a change in the pump'"'"'s environment, which change in configuration causes an aliquot of dispense material to be expelled through the outlet.
14 Citations
12 Claims
- 1. A pump comprising a tubular container containing a dispense material, an outlet therefrom and an actuator arranged to alternate between first and second configurations in response to a change in the pump'"'"'s environment wherein said change in the pump'"'"'s environment comprises a change in the thermal, chemical, electromagnetic, moisture, light, sound or electrical field conditions of the pump'"'"'s surrounding environment and wherein the actuator is arranged to advance stepwise within the container towards the outlet, so as to cause portions of dispense material to be expelled through the outlet, and further wherein the pump has no connection to electrical power or source of electrical power wherein the actuator comprises a first advancing means, and second advancing means, each being engaged within the tubular container such that they can move towards the outlet but not away from it in normal use.
Specification