Adjustable output pump for liquids
OwnerHenry F. Hope, Stephen F. Hopeinventors
Life of this patent
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Abstract
An adjustable expansible chamber pump for liquids is disclosed, which is resistant to corrosion and which preferably utilizes a compressible bellows of synthetic plastic material, which is compact, which has improved expansible chamber actuating mechanism comprising an adjustable eccentric driving member to vary the stroke to adjust the quantity of liquid delivered, the adjustment of the eccentric being easily accomplished and the setting being visible and approaching linearity and adapted for delivery of small quantities of a specific component, the pump being readily employed with similar pumps for simultaneous or staggered pumping of a plurality of liquids for mixing and which can utilize a single driving motor.
Claims14
An adjustable stroke liquid pump comprising
- a pump having expansible chamber means with liquid inlet and delivery valves, and
- variable stroke means for varying the delivery of liquid from said expansible chamber means,
- said variable stroke means comprising
- a rotatable drive shaft,
- a connecting member actuating said expansible chamber means and having a central axial opening,
- an eccentric cam member disposed in said opening and an adjustment plate member on said shaft in facing relation to said cam member,
- said cam member and said plate member being relatively rotatable for adjusting of the stroke,
- said adjustment plate member being secured to said shaft,
- said cam member being rotatably mounted in said opening and with respect to said connecting member and having an arcuate slot for movement of said cam member with respect to said shaft for stroke variation, and
- means for locking said cam member and said plate member in a selected position of adjustment.
An adjustable stroke liquid pump comprising
- a pump having expansible chamber means with liquid inlet and delivery valves, and
- variable stroke means for varying the delivery of liquid from said expansible chamber means,
- said variable stroke means comprising
- a rotatable drive shaft,
- a connecting member actuating said expansible chamber means,
- a cam member and an adjustment plate member on said shaft in facing relation,
- said cam member and said plate member being relatively rotatable for adjustment,
- said plate member being secured to said shaft,
- said cam member being rotatably mounted with respect to said connecting member and having an arcuate slot for movement of said cam member with respect to said shaft for stroke variation, and
- means for locking said cam member and said plate member in a selected position,
- said plate member having a pin extending therefrom on which said cam member is pivotally mounted.
Dependencies are inferred from the claim text.