Labconco Corporation

Mark S Schmitz

Jim Hunter

Lowell L Kuhn

Michael Brian Hays

Brian D Garrett

Tim Xing

Mark Schultz

The biosafety cabinet has a frame, which defines an enclosed work area and a front access opening, and a work surface along the bottom of the work area. One or more intake openings are positioned along the front access opening adjacent the work surface, a recirculation duct is in fluid flow communication with the intake holes, a supply filter is in fluid flow communication with the recirculation duct, and a supply blower is positioned upstream from the supply filter in fluid flow communication with the recirculation duct. One or more exhaust openings extend along the work surface, wherein at least one exhaust opening is positioned adjacent the front access opening rearward of the intake holes. The exhaust openings are in fluid flow communication with an exhaust duct, an exhaust filter, and an integral exhaust blower.

Biosafety cabinet with versatile exhaust system

A portable fingerprint development system having a container and a base plate. The container includes a plurality of joined walls that present an opening and a rim surrounding the opening. The base plate has opposed first and second surfaces. The first surface mounts a heater that is operable to heat a fingerprint development material. The base plate is moveable between a transport position, in which the first surface is adjacent the container's rim and the heater is positioned within the container, and an operation position, in which the second surface is adjacent the container's rim to enclose an interior volume defined by the container's walls and the base plate. Preferably, an exhaust system is mounted on the first surface of the base plate for removing and/or filtering fumes within the container.

Portable fingerprint development system

A freeze dryer having a collector chamber is provided with a sensor for detecting the presence of moisture in the chamber so that the vacuum pump cannot be operated if moisture is present. The refrigeration system can also be deactivated. This precludes moisture from being pulled into the vacuum pump where it will mix with pump oil and shorten the life of the pump. The moisture sensor is also coupled with a warning circuit which advises the operator that the system is inoperable and is capable of displaying the reason for inoperability.

Growing community of inventors

Overland Park, KS, United States of America

Mark S Schmitz