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Class 417/113 - Sensing element controls pilot valve


Subclass of Class 417 - Pumps
Definition: Apparatus wherein said valve means comprises a pilot valve
No. of patents: 9
Last issue date: 04/01/2008


NumberTitleIssue Date
7351385System for enabling landfill disposal of kitchen waste oil/grease
An apparatus for conversion of kitchen waste grease to a landfill-acceptable solid includes a grease collection cartridge. A mixing baffle within the cartridge has a package with a reactant to convert grease and oil, and water into soap. The apparatus has means for ...
04/01/2008
7341433Cutting insert and tool and wrench for using the same
A cutting insert includes a plurality of consecutively disposed, interlinked individual cutting inserts that can be brought into use successively through a respectively interposed predetermined breaking point by detaching a respectively preceding individual cutting ...
03/11/2008
7311144Apparatus and method for increasing well production using surfactant injection
An apparatus and method for injecting surfactant into a well for coal bed methane (CBM) recovery, tight sand gas extraction, and other gas extraction techniques provides for the mixing of surfactant and water near the downhole end of the well, maximizing water remov...
12/25/2007
7134152Adaptable, low cost air gap and flow control
A kitchen sink installation includes a plurality of adjacent kitchen sinks having drain tailpieces, a manifold pipe mounted substantially horizontally under the sinks and having a length and a plurality of discrete openings along its length, each of the openings fac...
11/14/2006
7021900Vapor-powered kinetic pump
A kinetic pump and method of pumping a liquid comprising providing an acceleration tube for the acceleration of a liquid contained therein by an introduced high-pressure vapor or gas, receiving the liquid from the acceleration tube with a compressed-air surge tank, ...
04/04/2006
6863509Split seal plate with integral brush seal
A segmented seal plate supporting a brush seal mounted in the space between the compressor and turbine and bearing against the shaft of a microturbine engine form a barrier in this cavity and serves to control flow in this space. A plurality of circumferentially spa...
03/08/2005
5871048Determining an optimum gas injection rate for a gas-lift well
A method is provided for automatically determining an optimum gas injection rate for a gas-lifted oil well. The optimum gas-lift slope for the oil well is initially provided and stored in the memory of a programmable logic controller. A lift gas is inject...
02/16/1999
5525042Liquid pump with compressed gas motive fluid
An apparatus for pumping liquids to a destination includes a pipe of a first cross-sectional area extending from the liquid to be pumped to the destination. A body having a cross-sectional area less than twice the first cross-sectional area also has an up...
06/11/1996
5066198Gas lift valve
A gas lift valve of the unloading type having a main valve for controlling fluid flow between a well casing and a well tubing, a volume of compressible liquid a spaced distance from said main valve and subject to casing pressure, and a pilot valve between...
11/19/1991
 
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