Device for the pulsed release of an amount of fluid that is stored in a storage housing

A device for pulsed release of stored fluid, comprising:

• a storage housing having a fluid storage section therein;
• a piston defining limits of said fluid storage section with said storage housing and being movably mounted in said storage housing between a locked position in which said fluid storage section has a maximum volume and a released position in which said fluid storage section has a minimum volume discharging fluid from said fluid storage section in a pulsed manner, said piston having an inside wall with an end region located adjacent to said fluid storage section;
• a first energy storage device coupled to and biasing said piston toward the released position thereof by applying a force to said piston in a direction of the released position thereof;
• a lock engaging said piston to retain said piston in the locked position thereof against biasing of said first energy storage device, said lock including individual catches facing and at least partially in contact with said inside wall in all positions of said piston in said storage housing, acting in said end region, and being retained by a holder against axial movement in said storage housing, said lock being unbiased by said first energy storage device;
• and
• an actuator coupled to said lock to disengage said lock from said piston allowing said piston to move from the locked position thereof to the released position thereof.