Abstract: Fluid control valves having an adjustable valve stem and piston assembly are described herein. An example fluid control valve includes a piston to control a flow of fluid through a valve body, a bonnet having a threaded bore and a housing to be removably disposed within and threadably coupled to the bonnet. The housing includes a first portion to be disposed in the bonnet, a roller assembly to be pivotally mounted to the first portion, the roller assembly to engage the piston to control a position of the piston. The housing including a second portion with a threaded outer surface to couple to the threaded bore of the bonnet. A valve stem is to move through the housing to control the movement of the roller assembly and the piston.

Abstract: Aluminum titanate precursor batch compositions comprising a recycled aluminum titanate component, at least a portion of the recycled aluminum titanate component being comprised of a recycled pre-reacted aluminum titanate composition or alternatively of an un-reacted green aluminum titanate precursor composition, and methods for producing aluminum titanate ceramic articles utilizing the inventive batch compositions.

Abstract: The present invention relates to a method for producing a perforated breakable multi well plate comprising providing a multi well plate, and generating one or more perforated section lines along the width and/or length of the multi well plate by puncturing the multi well plate with a slotted blade for each section line to be generated, wherein the slotted blade is rigid and sharpened along one edge and a series of slots extends from the sharpened edge into the blade, thereby forming a series of sharp and rigid teeth alternating with slots. The invention further relates to a press tool usable in the above method as well as a perforated breakable multi well plate.

Abstract: Coextruded films provide cross directional zoned multiple components side-by-side to one another. Systems and methods relate to coextruding such films. During coextrusion, a first polymer conjoins with a second polymer while a temperature differential is maintained between the first and second polymers. This temperature differential is selected to reduce a difference between the viscosities of the first and second polymers making the viscosity of the first polymer close enough to the viscosity of the second polymer to avoid separation upon coextrusion. Further, the films may form a layer in subsequent lamination to other material layers.

Abstract: Fluid control valves having adjustable valve stem and piston assembly are described herein. An example fluid control valve includes a piston to control a flow of fluid through a valve body, a bonnet with a threaded bore coupled to a bonnet yoke to be coupled to the valve body and a housing having a first portion to pivotally mount a roller assembly to move the piston and a second elongated portion with a threaded outer surface to couple to the threaded bore of the bonnet. A valve stem moves through the housing to control the movement of the piston.

Abstract: The application discloses a microplate, wherein the openings of the wells for receiving reagents have a collar, wherein the collar comprises at least two upwardly extending rims, wherein the rims are radially separated by a gap (4), and wherein the rims are circumferentially closed. Furthermore, multiwall strips with such double rimmed wells are disclosed.

Abstract: Coextruded films provide cross directional zoned multiple components side-by-side to one another. Systems and methods relate to coextruding such films. During coextrusion, a first polymer conjoins with a second polymer while a temperature differential is maintained between the first and second polymers. This temperature differential is selected to reduce a difference between the viscosities of the first and second polymers making the viscosity of the first polymer close enough to the viscosity of the second polymer to avoid separation upon coextrusion. Further, the films may form a layer in subsequent lamination to other material layers.

Abstract: The present invention relates to a multiwell strip comprising a frame portion consisting of a first stiff material, and a plurality of wells arranged in a line and consisting of a second material, which is not as stiff as the first material. Furthermore, the present invention relates to a multiwell-frame for obtaining a multiwell strip according to the present invention and methods for producing a multiwell strip according to the present invention.

Abstract: The present invention includes a neck-bonded laminate and a process for forming a neck-bonded elastic laminate, the laminate including a primary elastic region and a secondary elastic region. An exemplary process for forming the laminate includes providing a necked material and overlaying the necked material with an elastic sheet. The necked material and elastic sheet are passed through a nip between two rollers, the rollers being configured to form a primary elastic region and a secondary elastic region and the secondary elastic region having higher strength than the primary elastic region.

Abstract: Method and apparatus for sonication in connection with preparing a cellular sample containing DNA or RNA for performance of polymerase chain reaction (PCR) or for other reasons where it is important to break down the cell walls and other cellular structures to release cellular contents including DNA. The same methods and apparatus may be used to release DNA or RNA from virus for PCR or other uses. A novel apparatus which is capable of releasing cellular contents or releasing the DNA or RNA of virus without the aid of beads or chemicals is described herein. The apparatus is designed to deliver high levels of sonic energy through optimizing the geometry the apparatus and optimizing the force created by a piezoelectric transducer. The apparatus is capable of processing samples which are contained within fluid in a short amount of time between 30 seconds and two and one half minutes. The apparatus is small and can be field deployable or used in a standard molecular biology laboratory.

Abstract: A wafer-style valve assembly adapted to be coupled between opposing pipeline components having a common centerline secured together by a plurality of longitudinal fasteners includes a substantially cylindrical valve body, a seat retaining plate, and at least one clip. The valve body has a peripheral edge portion and an axial end surface. The seat retaining plate is disposed on the axial end surface. The at least one clip is also disposed on the axial end surface and extends radially outward of the peripheral edge portion. The clip has a radially inward portion and a radially outward portion. The radially inward portion secures the seat retaining plate to the to valve body. The radially outward portion has an edge defining a first recess and a second recess. The first and second recesses are each adapted to accommodate a longitudinal fastener to locate the valve assembly relative to the centerline of the pipeline.

Abstract: A rotary valve includes a valve body with an inlet, an outlet, a flow passage extending between the inlet and the outlet, and a rotating control element disposed within the valve body for selectively opening and closing the flow passage. The valve also includes a retainer ring mountable to the valve body which holds in place a seal carrier ring having an annular mounting flange mounted between the valve body and the retainer ring. The seal carrier ring also includes a seal carrier cartridge and a flexible portion coupling the seal carrier cartridge to the mounting flange to provide an improved seal and greater ease of assembly.

Abstract: A process for improving recovery of metal values in a smelting operation of the type wherein sulfidic ores are pyrometallurgically reduced. The process includes adding an anionic or non-ionic surfactant and blends thereof to the ore.

Abstract: A wafer-style valve assembly adapted to be coupled between opposing pipeline components having a common centerline secured together by a plurality of longitudinal fasteners includes a substantially cylindrical valve body, a seat retaining plate, and at least one clip. The valve body has a peripheral edge portion and an axial end surface. The seat retaining plate is disposed on the axial end surface. The at least one clip is also disposed on the axial end surface and extends radially outward of the peripheral edge portion. The clip has a radially inward portion and a radially outward portion. The radially inward portion secures the seat retaining plate to the to valve body. The radially outward portion has an edge defining a first recess and a second recess. The first and second recesses are each adapted to accommodate a longitudinal fastener to locate the valve assembly relative to the centerline of the pipeline.

Abstract: A wafer-style valve assembly adapted to be coupled between opposing pipeline components having a common centerline secured together by a plurality of longitudinal fasteners includes a substantially cylindrical valve body, a seat retaining plate, and at least one clip. The valve body has a peripheral edge portion and an axial end surface. The seat retaining plate is disposed on the axial end surface. The at least one clip is also disposed on the axial end surface and extends radially outward of the peripheral edge portion. The clip has a radially inward portion and a radially outward portion. The radially inward portion secures the seat retaining plate to the to valve body. The radially outward portion has an edge defining a first recess and a second recess. The first and second recesses are each adapted to accommodate a longitudinal fastener to locate the valve assembly relative to the centerline of the pipeline.

Abstract: A valve actuator comprises a housing, a lever, a collet, and a biasing device. The lever is disposed within the housing and is adapted to be operatively coupled to rotate the valve shaft. The collet is carried by the lever and adapted to couple the lever to the valve shaft. The biasing device comprising a spring operatively coupled to the collet to bias the lever into a predetermined position.

Abstract: The present invention includes a neck-bonded laminate and a process for forming a neck-bonded elastic laminate, the laminate including a primary elastic region and a secondary elastic region. An exemplary process for forming the laminate includes providing a necked material and overlaying the necked material with an elastic sheet. The necked material and elastic sheet are passed through a nip between two rollers, the rollers being configured to form a primary elastic region and a secondary elastic region and the secondary elastic region having higher strength than the primary elastic region.