Pumps – One fluid pumped by contact or entrainment with another – Liquid pumped by supplying or exhausting gaseous motive...
Patent
1989-04-17
1991-07-02
Smith, Leonard E.
Pumps
One fluid pumped by contact or entrainment with another
Liquid pumped by supplying or exhausting gaseous motive...
417238, 417478, 417554, F04B 2108
Patent
active
050282131
ABSTRACT:
A convertible and variable-length groundwater device permitting conversion of one type of groundwater sampling device to another, and vice versa. Conversion between a bailer device and a gas-drive pump, or a bailer device and a bailer pump, for example, is readily accomplished by substituting particular components from an assortment of universal, unique and multi-use components adapted to mate one with another and to be assembled substantially without the use of tools. Variable-length bladder devices, gas-drive pumps and bladder pumps are also provided, each being convertible between at least a single- and double-length assembly merely by adding or removing various components.
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NWWA/EPA Manual of Ground-Water Sampling Procedures, published in 1981 US Department of the Interior Geological Survey Report, Downhole Pumps for Water Sampling in Small-Diameter Wells, published in 1979.
TIMCO Manufacturing Company, Catalog of Geotechnical, Ground Water Sampling Products, published in Mar. 1982.
Dickinson William D.
Mirand James
American Sigma, Inc.
Burt Pamela S.
Carrier Joseph P.
Smith Leonard E.
Weiner Irving M.
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