Pump motors
First Claim
1. A WELL-PUMPING UNIT FOR USE ON A WELL HEAD HAVING A PUMP ROD EXTENDING THEREFROM COMPRISING A SUPPORT ADAPTED TO BE DISPOSED AT THE WELL HEAD, AN EXPANSIBLE BELLOWS MOUNTED ON SAID SUPPORT AND HAVING A FLUID-RECEIVING EXPANSION CHAMBER THEREWITHIN, SAID BELLOWS INCLUDING MEANS FOR CONNECTING IT TO SAID ROD, A FLUID INLET FOR CONDUCTING ACTUATING FLUID INTO SAID CHAMBER FOR EXPANDING SAID BELLOWS AND A FLUID OUTLET FOR EXHAUSTING FLUID FROM SAID CHAMBER TO PERMIT COLLAPSE THEREOF, A REVERSING VALVE MEANS FOR ALTERNATELY CLOSING SAID INLET AND OPENING SAID OUTLET AND OPENING SAID INLET AND CLOSING SAID OUTLET, AND CONTROL MEANS OPERATIVELY CONNECTED TO SAID BELLOWS FOR ACTUATION THEREBY TO CONTROL SAID VALVE IN ACCORDANCE WITH THE EXPANSION AND COLLAPSE OF SAID BELLOWS.
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Accused Products
21 Citations
1 Claim
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1. A WELL-PUMPING UNIT FOR USE ON A WELL HEAD HAVING A PUMP ROD EXTENDING THEREFROM COMPRISING A SUPPORT ADAPTED TO BE DISPOSED AT THE WELL HEAD, AN EXPANSIBLE BELLOWS MOUNTED ON SAID SUPPORT AND HAVING A FLUID-RECEIVING EXPANSION CHAMBER THEREWITHIN, SAID BELLOWS INCLUDING MEANS FOR CONNECTING IT TO SAID ROD, A FLUID INLET FOR CONDUCTING ACTUATING FLUID INTO SAID CHAMBER FOR EXPANDING SAID BELLOWS AND A FLUID OUTLET FOR EXHAUSTING FLUID FROM SAID CHAMBER TO PERMIT COLLAPSE THEREOF, A REVERSING VALVE MEANS FOR ALTERNATELY CLOSING SAID INLET AND OPENING SAID OUTLET AND OPENING SAID INLET AND CLOSING SAID OUTLET, AND CONTROL MEANS OPERATIVELY CONNECTED TO SAID BELLOWS FOR ACTUATION THEREBY TO CONTROL SAID VALVE IN ACCORDANCE WITH THE EXPANSION AND COLLAPSE OF SAID BELLOWS.
Specification
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- Resources
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Current AssigneePowell, William S.
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Original AssigneePowell, William S.
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InventorsPowell, William S.
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Application NumberUS04/444,698Time in Patent Office684 DaysField of SearchUS Class Current91/273CPC Class CodesF04B 47/04 the driving means incorpora...
