Device and method for impulse ejection of medium

A method for impulse ejection of a medium from an ejection tube of a device for impulse ejection of the medium, in which the device has a membrane in an area of an ejection end of the ejection tube and a nozzle element in the ejection tube, the method comprising:

• moving the nozzle element from a rest position to an ejection position during ejection of the medium;
• elastically deforming a plurality of distinct portions of the membrane defined by a number of curved slits that extend radially outward from a center of the membrane to form a passage opening for the medium;
• and
• causing the medium to interact with the membrane to improve range and stability of the ejected medium as the medium passes through the passage opening defined by the membrane during ejection of the medium.

A device for impulse ejection of a medium, the device comprising:

• an ejection tube having an ejection end;
• a membrane coupled to the ejection end of the ejection tube, the membrane having a plurality of curved slits in an un-deformed configuration that extend radially outward from a center of the membrane, and the membrane being configured to elastically deform to form a passage opening for the medium during ejection of the medium;
• and
• a nozzle element operatively coupled to the ejection tube to move along an ejection direction between a rest position and an ejection position and to enable the medium to interact with the membrane during ejection to improve range and stability of the ejected medium,
• wherein the nozzle element in moving to the ejection position causes deformation of the membrane to form the passage opening, and
• wherein the nozzle element is configured such that a damping space is arranged between the nozzle element and the ejection tube.

A device for impulse ejection of a medium, the device comprising:

• an ejection tube having an ejection end;
• a membrane coupled to the ejection end of the ejection tube, the membrane having a plurality of curved slits in an un-deformed configuration that extend radially outward from a center of the membrane, and the membrane being configured to elastically deform to form a passage opening for the medium during ejection of the medium;
• and
• a nozzle element operatively coupled to the ejection tube to move along an ejection direction between a rest position and an ejection position and to enable the medium to interact with the membrane during ejection to improve range and stability of the ejected medium,
• wherein the nozzle element in moving to the ejection position causes deformation of the membrane to form the passage opening, and
• wherein the nozzle element includes a plurality of holes positioned such that, during ejection of the medium, gas is entrained from a surrounding environment through the holes.