Pumps – Motor driven – Fluid motor
Patent
1988-01-22
1990-02-27
Smith, Leonard E.
Pumps
Motor driven
Fluid motor
92100, F04B 4306
Patent
active
049041673
ABSTRACT:
Pumps for nonlubricating fluid can use membranes for the separation of different fluids. Suitable membranes can be used for pressures up to several thousand atmospheres in the fluids. Such membranes are, however, subjected to difficult problems like stresses in the material of the membrane, compression of the material of the membrane and the like. These problems prevented long life of the membranes or it restricted the membranes to such short strokes that the deliveries of the pumps were small at a given size and weight. The present invention improves the life time and the delivery capacities of membranes by creating most suitable configurations of the membranes and of the adjacent parts. Pumps or compressors for relative big delivery quantities, and also for high pressures up to several thousand atmospheres in cases of pumps, are thereby obtained.
REFERENCES:
patent: 1466242 (1923-08-01), Neal
patent: 2959131 (1960-11-01), Shoosmith
patent: 3093086 (1963-06-01), Altoz et al.
patent: 4621989 (1986-11-01), Burgert
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