Triple discharge pump
AssigneeProduct Research and Development
InventorE. Dale Hartley
Life of this patent
Estimating the term…
Abstract
A pump comprising a housing and a flexible diaphragm mounted in the housing. A first region of the diaphragm partially defines a first pumping chamber, and the pumping chamber has an inlet and an outlet. A wobble plate drive is coupled to the first region of the diaphragm to provide a pumping action in the pumping chamber. The wobble plate drive has a nutating axis, and the first region of the diaphragm lies radially outwardly of the nutating axis. The first region of the diaphragm has a generally annular ramp section which flexes when driven by the wobble plate drive to provide the pumping action, and the ramp section is wider radially at a location remote from the nutating axis than at a location nearer the nutating axis. The pump also has a single outlet valve arranged to serve multiple pumping chambers.
Claims19
A pump comprising:
- a housing;
- a flexible diaphragm mounted in said housing;
- means cooperating with a first region of the diaphragm to define a first pumping chamber, said pumping chamber having an inlet and an outlet;
- a wobble plate drive at least partially in said housing and subject to nutating motion, said wobble plate drive being drivingly coupled to said first region of the diaphragm to provide a pumping action in said first pumping chamber;
- said wobble plate drive having a nutating axis and said first region of the diaphragm lying radially outwardly of the nutating axis;
- said first region of said diaphragm having a generally annular ramp section which flexes when driven by the wobble plate drive to provide said pumping action in the first pumping chamber;
- and
- said ramp section when unstressed by any external member being wider radially at a location remote from the nutating axis than at a location nearer the nutating axis.
A pump as defined in claim 14 wherein said web extends in both directions from the resilient section and stiffens the resilient section between the two adjacent outlets.
A pump comprising:
- a housing;
- a flexible diaphragm mounted in said housing;
- means cooperating with a first region of the diaphragm to define a first pumping chamber, said pumping chamber having an inlet and an outlet;
- a wobble plate drive at least partially in said housing and subject to nutating motion, said wobble plate drive being drivingly coupled to said first region of the diaphragm to provide a pumping action in said first pumping chamber;
- said wobble plate drive having a nutating axis and said first region of the diaphragm lying radially outwardly of the nutating axis;
- said first region of said diaphragm having a generally annular ramp section which flexes when driven by the wobble plate drive to provide said pumping action in the first pumping chamber;
- and
- said ramp section being constructed so that it is wider radially at a location remote from the nutating axis than at a location nearer the nutating axis.
Dependencies are inferred from the claim text.