Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage
Patent
1986-07-09
1987-07-21
Croyle, Carlton R.
Pumps
Condition responsive control of drive transmission or pump...
Adjustable cam or linkage
417411, 417415, 417 45, 74 41, 74600, 74601, 74602, 744248A, 74837, 92 131, 92 137, F04B 4900, F04B 3504, F16H 3508
Patent
active
046815155
ABSTRACT:
Variable stroke pump apparatus includes a photovoltaic array for providing electrical current to motors, one of which provides for the pumping action of a walking beam, one of which provides for movement of a control unit which varies the length of stroke of the pumping apparatus from a minimum of zero to a maximum, and one of which operates a counterweight for moving the counterweight in response to the pumping load. The apparatus includes mechanical elements which adjust the length of the stroke of the pumping arm, and a control system which controls the length of the pumping stroke in response to the output of the photovoltaic array.
REFERENCES:
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patent: 4586879 (1986-05-01), Slater
Blue Sky Water Supply Company brochure, "Solar Water Systems", 4 pages.
Dempster Company brochure, "Dempster Hi-Efficiency Solar Pump Jack Powered by Tri Solar".
Croyle Carlton R.
Neils Paul F.
Shields H. Gordon
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