Device for spraying a predetermined dose of a fluid, and a method of filling the device
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United States of America Patent
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Apr 30, 1996
Grant Date -
N/A
app pub date -
Feb 16, 1994
filing date -
Jun 26, 1991
priority date (Note) -
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Abstract
A device for spraying a single dose of a fluid in divided form includes a cylindrical tank (1) containing the dose of fluid, a piston (2) sliding in the cylindrical tank (1), a pusher for the piston (2), and outlet passage (5, 6) capable of communicating with the cylindrical tank (1). The piston (2) is displaceable relative to the pusher between a storage position, in which it prevents communication between the outlet passage (5, 6) and the cylindrical tank (1), and an actuation position, in which it puts the outlet passage (5, 6) into communication with the cylindrical tank (1). According to one aspect of the invention, the piston (2) is maintained in its storage position by wedging.
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