Pump with pressure-indication means

Details Pump with pressure-indication means Pump with pressure-indication means

B - Operations, Transporting

65

B

B65B 31/04 (2006.01)

Patent

CA 2426136

Pump for applying an increased or reduced pressure to a container. This pump is provided with a plate-like part which reacts to the pressure difference between the container and the environment. This part can preferably adopt two stable positions, and a change is signalled. This change can be brought about, for example, by the sound generated as a result of the plate-like part turning over. The pitch and the like of the sound can be influenced by arranging the plate-like part in a hollow piston and providing the latter with openings leading to the environment.

L'invention concerne une pompe conçue pour appliquer une pression plus faible ou plus forte à un récipient. Cette pompe est pourvue d'une portion de type plaque réagissant à la différence de pression entre le récipient et l'environnement. De préférence, cette portion peut adopter deux positions stables, un changement étant signalé. Ce changement peut être indiqué, par exemple, par le son obtenu par retournement de la portion de type plaque. La tonie, par exemple, du son peut être modifiée par installation de la portion de type plaque dans un piston creux et par ménagement dans celui-ci d'ouvertures menant à l'environnement.

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