| 摘要 |
<p>Pressure capsule for spray can, characterized in that it principally consists of at least one chamber (4) which is intended to be filled with fluid under relatively high pressure; in the wall (6) of this chamber (4) a valve (7); means (9) (38) which can command the valve (7); means (5) (37) (39) which hold the valve (7) in closed position when the pressure capsule is in an atmospheric environment, on the one hand, as well as when the pressure capsule is in an environment where the pressure is equal to or greater than the operating pressure in the spray can, in other words the pressure which is necessary for the expulsion of a liquid (2), on the other hand; whereby the rod (10) of the valve (7) is attached to a membrane (9) in the chamber (5), respectively to a disk shaped extremity (38) and whereby the space (11) between the walls (6) and (8), respectively between the wall (6) and the disk shaped extremity (38), is in continuous connection with the environment.</p> |
