University of Louisville Research Foundation

USA as Represented by Secretary of the Navy

Michael J Martin

Kevin M Walsh

John F Naber

Scott Douglas Cambron

Robert S Keynton

Stanley Vincent Stepnowski

Thomas Roussel

R Andrew McGill

Robert Andrew McGill

Eric J Houser

Douglas J Jackson

Viet K Nguyen

Doug Jackson

Mark Crain

Julia W Aebersold

Richard Bernard Hageman, Iii

Suraj Alexander

Matthew A Craun

Julia W Abersold

David C Warwick

A large volume preconcentrator device for concentrating analytes. A housing accepts an analyte vapor flow, and a plurality of collection surfaces are disposed within the housing. A selectively actuatable heater is disposed on each of the plurality of collection surfaces. At least one selectively actuatable damper is disposed within the housing for selectively restricting a collection flow.

Large volume analyte preconcentrator

An analyte collection system device includes an active area that includes a plurality of perforations extending therethrough. The plurality of perforations are arranged to permit passage of an analyte fluid flow through the microscale plate. A heating element is provided for heating the active area, and a thermal distribution layer is disposed over at least a portion of the active area. For cooling the active area at or below an ambient temperature, an active cooler is provided.

Actively cooled vapor preconcentrator

In the invention, a collection device includes a flow through micro scale plate arranged to collect analyte. The plate includes holes, and sorbent coating on contact surfaces of the plate. The holes pass analyte fluid flow, for example analyte vapor so that fluid flow for collection may be generally perpendicular to the sorbent plate. Preferred embodiment plates include an integrated heater trace. In preferred embodiments, a high substantially perpendicular flow is used for collection and concentration, and during desorption and delivery a low substantially parallel flow is used. The low flow is selected to meet constraints of a detector system.

Micro scale flow through sorbent plate collection device

An interchangeable preconcentrator assembly comprises an outer housing and an inner housing defining a chamber. A biased urging member is held at least partially within the outer housing and slidably biased toward a surface of the inner housing. When the biased urging member is at least partially retracted, a space is defined between the urging member and the surface of the inner housing for accommodating at least one preconcentrator chip. A continuous fluid flow path is defined through the outer housing and through the space. The interchangeable preconcentrator assembly may further comprise at least one modular preconcentrator carriage.

Interchangeable preconcentrator connector assembly

An aspect of the invention is directed to an analyte collection device of the type that includes at least one plate for storing the analyte and a heating element for heating the at least one plate. An example device comprises a controller linked to the heating element that heats the at least one plate to a first temperature, takes a measurement of a property of the at least one plate, and uses the measurement to estimate one or more of the amount of the analyte on the plate and the amount of contaminant on the plate.

Analyte collection devices and methods

A leveled load is carried by a support on one of the exterior surfaces of a pair of outer wedges maintained in parallel spaced relation to each other by an intermediate activating wedge to which selective horizontal displacement is imparted relative to the outer wedges for vertical adjustment. Such selective displacement is imparted by rotation of a screw bolt threaded through a centering pin held in non-rotatable relation to the intermediate wedge in vertical alignment with the load support.

Height adjustment device for load support

Growing community of inventors

Herndon, VA, United States of America

Michael J Martin