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US 5,681,152 AGranted
Membrane type fluid pump
AssigneeSem AB
InventorWilgot .ANG.hs
Life of this patent
Estimating the term…
Abstract
The diaphragm pump includes a housing having an opening defined at one end. A diaphragm is attached to the housing and extends over the opening. An inlet is defined in the housing for receiving a fluid and a driving element is attached to the housing and in driving engagement with the diaphragm to vibrate the diaphragm. An orifice is defined in the diaphragm to permit a discharge of the fluid therethrough when the diaphragm is in vibration. A spring is disposed within the housing for biasing a plunger towards the diaphragm so that the plunger sealingly engages the diaphragm.
Claims13
A diaphragm pump comprising:
- a housing having an opening defined at one end;
- a diaphragm attached to the housing to extend over the opening;
- an inlet defined in the housing for receiving a fluid;
- a driving element attached to the housing, the driving element being in driving engagement with the diaphragm to vibrate the diaphragm;
- an orifice defined in the diaphragm, the orifice being adapted to permit a discharge of the fluid therethrough;
- a plunger disposed within the housing, the plunger being movable within the housing;
- and
- a spring disposed within the housing for biasing the plunger towards the diaphragm so that the plunger sealingly engages the diaphragm.
5 more elements
Dependencies are inferred from the claim text.