Abstract: A sample bag for collecting a mixture of gasses for analysis is made of a modified polymer consisting essentially of tetrafluoroethylene (TFE) and at most about 2.0 percent perfluoropropylvinylether (PPVE).

Abstract: An apparatus for sampling the emission content of an exhaust gas from an exhaust source has an exhaust inlet adapted for connecting the exhaust source with a venturi metering device for measuring the flow rate of the exhaust gas. The venturi metering device includes a housing having an entrance section, a throat section, and an exit section, the throat section having a smaller diameter than the entrance and exit sections. The housing includes first and second pressure transducers that produce an electrical output that characterizes the pressure that the pressure sensing means senses, the electrical outlet enabling a computer of the venturi metering device to accurately measure the pulsating flow of the exhaust gas in both directions.

Abstract: An apparatus for sampling the emission content of an exhaust gas from an exhaust source has an exhaust inlet adapted for connecting the exhaust source with a venturi metering device for measuring the flow rate of the exhaust gas. The venturi metering device includes a housing having an entrance section, a throat section, and an exit section, the throat section having a smaller diameter than the entrance and exit sections. The housing includes first and second pressure transducers that produce an electrical output that characterizes the pressure that the pressure sensing means senses, the electrical outlet enabling a computer of the venturi metering device to accurately measure the pulsating flow of the exhaust gas in both directions.

Abstract: A sample bag for collecting a mixture of gasses for analysis is made of a modified polymer consisting essentially of tetrafluoroethylene (TFE) and at most about 2.0 percent perfluoropropylvinylether (PPVE).

Abstract: A sample bag for collecting a mixture of gasses for analysis is made of a modified polymer consisting essentially of tetrafluoroethylene (TFE) and at most about 2.0 percent perfluoropropylvinylether (PPVE).

Abstract: A sample bag for collecting a mixture of gasses for analysis is made of a modified polymer consisting essentially of tetrafluoroethylene (TFE) and at most about 2.0 percent perfluoropropylvinylether (PPVE).

Abstract: A gas separator connectable between the seating nipple/pump and the mud anchor of a well production line takes advantage of gravitational, shear and centrifugal forces to detrain gas from the formation fluid. An outer cylindrical tube is concentrically secured by upper and lower couplings in relation to an inner cylindrical tube having an axial flow passage and a plurality of radial perforations. The upper coupling is adapted for connection to the seating nipple/pump and the lower coupling is adapted for connection to the mud anchor. The couplings each have a passage therethrough to extend the inner tube axial flow passage in fluid communication between the pump and the mud anchor. The outer cylindrical tube has a plurality of inwardly downwardly centrifugally oriented passages for admitting liquid entrained with gas into an annulus between the tubes and for causing the admitted liquid to flow in a downward spiral in the annulus.

Abstract: A sample bag for collecting a mixture of gasses for analysis is made of a modified polymer consisting essentially of tetrafluoroethylene (TFE) and at most about 2.0 percent perfluoropropylvinylether (PPVE).

Abstract: A mixing system includes a dilution inlet, an elbow duct, and a gaseous inlet in flow communication with the elbow duct along the elbow duct outer turning radius. The elbow duct has a first end in flow communication with the dilution inlet, and a second end outlet for connecting to external equipment, such as a sampling system.

Abstract: In a downhole sucker rod string stress absorber, a relatively inelastic plunger of circular cross-section is mounted on a concentric shaft extending upwardly to an upper portion of the sucker rod string. A resiliently compressible cushion of circular cross-section is disposed below the plunger and above a lower portion of the sucker rod string. A disk may be seated between the cushion and the plunger to distribute forces more evenly on the surface of the cushion. A resiliently compressible cylindrical sleeve, preferably having a plurality of annular grooves spaced thereabout, surrounds the shaft above the plunger. A coupling, adapted for connection to the lower portion of the sucker rod string, has a threaded end with a compressive face which abuts the outer end of the compressible cushion. A guide slidably mounted on the shaft has a threaded end with a compressive face thereon which abuts the outer end of the compressible sleeve.

Abstract: Subsonic venturi proportional and isokinetic sampling methods and apparatus for use in evaluating exhaust emissions from an exhaust source which utilizes a pair of calibrated subsonic venturi restrictions for measuring the bulkstream and extracted sample flow rates respectively. The subsonic venturis may be specifically configured relative to each other to provide isokinetic sampling under specified control conditions.

Abstract: Apparatus for collecting and storing empty aluminum containers for recycling. The containers are inserted into a chute having a regulating feed mechanism. The cans fall out of this one-by-one into a crushing zone between a reciprocating ram and a stationary platen, and interrupt a sensor beam which initiates the crushing cycle of the ram. After crushing, the cans drop into a container past the outer end of a can stop. The stop is counterbalanced so that empty cans will be retained in the crushing zone for flattening, while partially full containers displace this and fall through. The drive mechanism for the ram is provided by a compound eccentric cam having thrust and retraction faces, and first and second roller followers for engaging these. Preferably, the assembly is mounted in a cabinet for inclusion in a stand of vending machines.

Abstract: An exhaust sampler for use in evaluating exhaust emissions of an exhaust source such as an internal combustion engine which utilizes a calibrated subsonic venturi for measuring the exhaust or exhaust/dilution air flow rate. Controls are provided for selecting and controlling a variety of flow rates between or during test periods. The system also provides a variety of control methods for extracting a sample from the bulkstream flow of exhaust and dilution air or from raw exhaust flow.

Abstract: A boiler air port cleaner in the form of a substantially plate-like cutter reciprocated by a piston and cylinder power device and guided by a guide structure mounted on the outer wall of a boiler with the plate-like cutter cleaning slag from air ports in the inner boiler wall.

Abstract: A testing apparatus for sampling the emission content of the source when a portion of the exhaust gas is optionally diluted using clean dry air added near the sample extraction point. A sonic venturi is used to establish a constant mass flow rate from the exhaust system of the engine under test and a subsonic venturi monitors the flow rate of dilution air. Both venturis provide flow rate signals which are substracted to determine the flow rate of the exhaust.

Abstract: A testing apparatus for measuring the particulate and/or gaseous content of an exhaust source for use in evaluating the exhaust emissions of internal combustion engine provides both fixed flow and proportional flow control of the diluted particulate containing sample. The sample is diluted with carefully metered, clean dry air by means of one or more hybrid electrical-fluid control circuits for remarkably improved response time and accuracy.

Abstract: A testing apparatus for measuring the particulate and/or gaseous content of an exhaust source for use in evaluating the exhaust emissions of internal combustion engine provides both fixed flow and proportional flow control of the diluted particulate containing sample. The sample is diluted with carefully metered, clean dry air by one or more hybrid electrical-fluid control circuits for remarkably improved response time and accuracy.

Abstract: Method and apparatus for monitoring and signalling the quantity of a known gas, or gases, in a gas mixture. The monitoring system is particularly adapted to continuously sense the quantity of hydrogen or oxygen in the containment gas mixture for a nuclear reactor electrical power generator. The monitoring system utilizes thermal conductivity gas measuring cells arranged in an electrical bridge network along with a catalytic reactor for modifying the constituency of the containment gas mixture undergoing measurement to provide the signal representative of the changes in constituency of the containment gas mixture at the power generating site.