Well pumping systems

Details Well pumping systems Well pumping systems

1990-04-12

1991-03-05

Smith, Leonard E.

Pumps

Including disengageable rotary or frangible drive connection

417362, 4174236, 74 41, F04B 900

Patent

active

049973460

ABSTRACT:
The present invention provides a method and apparatus for eliminating at least a portion of the energy losses in a well pumping system which are due to "regeneration" (i.e. those periods during the pumping cycle in which the pumping system experiences negative net torque). This is accomplished by positioning a clutch means in the driving connection between the prime mover and the pumping unit of the well pumping system so that the clutch means forms a driving connection between said prime mover and said pumping unit during periods when said pumping unit experiences positive net torque and effectively disengages the driving connection between said prime mover and said pumping unit to allow freewheeling therebetween during periods when said pumping unit experiences negative net torque.

REFERENCES:
patent: 3075467 (1963-01-01), Gallaway
patent: 3751192 (1973-08-01), Boyd
patent: 3971213 (1976-07-01), Kelley
patent: 4561827 (1985-12-01), Beaumont
patent: 4927333 (1990-05-01), Kato

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