Perkinelmer Health Sciences, Inc.

Parker-hannifin Corporation

Jacobs Vehicle Systems, Inc.

Perkinelmer Health Systems, Inc.

Jacobs Vehicle Svstems, Inc.

Timothy P Neal

Gregory A Hanlon

Richard Edwards

David M Aikens

Joseph L DiCesare

Justin D Baltrucki

G Michael Gron, Jr

Keith Ferrara

Feng Jin

Rosario Mannino

Eric James Hodgkinson

Steven R Knight

Robb Janak

Matei Alexandru

Bruce A Swanbon

Jacob Moore

Gregory Hanlon

Valve bridge systems include constraints and guides for managing bridge jump and other uncontrolled valve bridge motion during engine operation. Constraints may include an e-foot collar, an extended portion on the bridge, and a bridge brake pin. Guides may include valve stem tip lead-in chamfers surrounding the valve bridge valve pockets as well as a deflection surface on the bridge extended portion. Methods of configuring valve bridges may include configuring the valve step tip lead-in chamfers based on worst-case positions of the valve bridge defined by one or more or a combination of the constraints provided by the e-foot collar, extended portion and brake pin.

Valve bridge constraints and guides and related methods

A system for controlling actuation of an engine valve comprises a pivot and a torsion spring having first and second legs operatively connected to the pivot. A lever arm is adjustably affixed to and extending away from the pivot, and is further rotatable about a pivot axis of the pivot between a retracted position and an extended position and vice versa relative to a motion conveying component. Furthermore, a housing is provided having a pivot bore formed therein with the pivot rotatably disposed in the pivot bore. The housing further comprises a first and second openings intersecting with the pivot bore such that the first and second legs extend out of the first opening and the lever arm extends out of the second opening. When a first force is applied by the motion conveying component to the lever arm, such first force maintains the lever arm in the extended position.

Rotating actuator system for controlling valve actuation in an internal combustion engine

A column connection device for use in gas chromatography is disclosed. The column connection device includes a housing with a piston, a piston spring retainer, and disk springs composed of an austenite nickel-chromium-based superalloy (e.g. Special Metals Corp.'s Inconel family of metals). The piston has a ferrule on its exposed end. The disk springs urge the ferrule against the mating portion of an external device maintaining a seal with the external device and creating a seal radially around a column disposed within. The column connection device also includes a release slider and a column base with a column retainer, column tab, and wire springs composed of an austenite nickel-chromium-based superalloy. The wire springs urge the column tab to frictionally engage the column, thereby inhibiting column movement. Depressing the release slider flexes the wire springs, urging the column tab away from the column, removing the frictional inhibition.

Gas chromatograph column connection device

Certain embodiments described herein are directed to inserts and ion sources. In some examples, an insert can comprise a positioning guide configured to provide for visual positioning of a chromatography column under the positioning guide. In other examples, an ion source configured with an aperture to couple to a carrier tube to render the ion source non-removable from an instrument housing when the carrier tube is coupled to the ion source is described.

Positioning guides and ion sources

A gas chromatography system includes at least one gas chromatography subsystem including at least one injector port, and an autosampler. The autosampler includes a carousel tray mounted for rotation about a rotation axis and including arcuately extending first and second rows of sample reservoirs, a first sample transfer tower to extract samples from the first row, a second sample transfer tower to extract samples from the second row, and a control system operative to: selectively position the carousel tray relative to the first and second sample transfer towers to align the first and second sample transfer towers with a selected pair of the sample reservoirs of the first and second rows, respectively; draw samples from the selected pair using the first and second sample transfer towers; inject the sample drawn from the first row into the at least one injector port using the first sample transfer tower; and inject the sample drawn from the second row into the at least one injector port using the second sample transfer tower.

Autosampler and gas chromatography system and method including same

A flow cell for a fluorescence spectrometer includes a flow channel to receive a flow of a liquid sample, an excitation light entrance window to receive excitation light from a light source, and an emission light exit window to transmit fluorescent emission light from the liquid sample in the flow channel from the flow cell. The excitation light entrance window and/or emission light exit window includes a waveguide including: a waveguide core formed of a core material; and a cladding medium surrounding a portion of the waveguide core, wherein the cladding medium has a refractive index less than the refractive index of the core material. The waveguide defines a portion of the flow channel.

Flow cell modules and liquid sample analyzers and methods including same

A liquid sample analyzer includes a liquid sample source, a flow cell, an optical device and a plurality of optical fibers. The flow cell is configured to receive a flow of a liquid sample from the liquid sample source. The plurality of optical fibers optically connect the flow cell to the optical device to transmit light between the flow cell and the optical device.

A liquid sample analyzer includes a flow cell, a light source, and a lamp temperature management system. The flow cell is configured to receive a flow of a liquid sample from a liquid sample source. The light source includes a lamp configured to emit light to illuminate the flow of the liquid sample in the flow cell. The lamp temperature management system includes: an air flow generator operable to generate a turbulent air flow to cool the lamp; a thermally conductive primary housing encapsulating the lamp such that a primary air gap is provided between the primary housing and the lamp; and a thermally conductive secondary housing surrounding the primary housing and configured to deflect the turbulent air flow away from the primary housing.

Lamp temperature management systems and methods for liquid chromatography analyzers

A flow cell module for use in a liquid sample analyzer includes a module housing, a liquid core waveguide mounted in the module housing to receive a flow of a liquid sample from a liquid sample source, an input optical fiber disposed in the module housing to transmit radiation from a radiation source to the liquid core waveguide, an input termination located on an input end of the input optical fiber, a first kinematic connection mechanism operative to bias the input termination in a first direction along a first axis while permitting displacement of the input termination in a first opposing direction along the first axis, and a second kinematic connection mechanism operative to bias the input termination in a second direction along a second axis while permitting displacement of the input termination in a second opposing direction along the second axis. The second axis is transverse to the first axis.

A flow cell assembly for use in a liquid sample analyzer including a radiation source, a sensing device and a liquid sample source to supply a liquid sample includes an entrance joint member, a liquid core waveguide, a liquid sample feed tube, and an input optical fiber. The entrance joint member includes a waveguide receiving bore and a feed tube receiving bore. The liquid core waveguide is mounted in the waveguide receiving bore and defines a waveguide bore. The liquid sample feed tube is mounted in the feed tube receiving bore such that the liquid sample feed tube is in fluid communication with the waveguide bore to fluidly connect the liquid sample source to the waveguide bore. The input optical fiber is mounted in the entrance joint member to transmit radiation from the radiation source to the waveguide bore, which radiation is transmitted through the waveguide bore and the liquid sample therein to the sensing device.

Growing community of inventors

Harwinton, CT, United States of America

Timothy P Neal