Spray pump device

摘要

The invention refers to a spray pump device for spraying a liquid operated by a memory shape element. The spraying device is provided with a memory shape alloy wire with electrical resistivity, that is able to generate heat that increases its temperature so that due to memory shape property, the wire shrinks when current is applied. This shrinking permits the wire to activate a pump that atomizes a volatile substance.

主权项

1. A spray pump device comprising a spray head and a wire provided to operate the spray head, wherein the wire is made of a memory shape metal alloy and is configured to shrink when a suitable electric current passes through the wire;
a lever pivotally mounted about an axis, a first end of the wire is joined to a point of the lever, and a second point of the wire is joined to a fixed point of the device, the lever is adapted to activate the spray head when the wire shrinks; an electronic circuit to supply the electric current through the wire for shrinking the wire, the electronic circuit being fed by a battery; and an end-run-switch connected to the electronic circuit, the end-run-switch being arranged to detect a selected position in which the spray head has been activated, the electronic circuit being adapted to cut the electric current through the wire when the end-run-switch detects that the spray head has been activated.