Kidde, Inc.

Other

Baxter Travenol Laboratories, Inc.

Carl W Walter

William J Riordan

John L Woodworth

A mixing and dispensing receptacle including a first container defining a first nozzle portion and a first sealed chamber retaining a first substance and a rupturable wall portion separating the first chamber from the interior of the first nozzle portion; and a second container defining a second chamber retaining a second substance and a second nozzle portion disposed at least partially within the interior of the first nozzle portion and circumferentially sealed thereto so as to sealingly isolate the second substance. The second nozzle portion is movable axially relative to the first nozzle portion so as to pierce the rupturable wall portion and provide communication between the first and second chambers. One of the nozzle portions comprises a tapered outer surface adapted for engagement with a mating coupling member and an aseptic shield covers the tapered outer surface and is removable therefrom. After penetration of the rupturable wall portion by the second nozzle portion, the first and second substances are transferred between the first and second chambers to provide mixing thereof. The tapered outer surfaces is then engaged with a mating coupling member and the mixed substances discharged thereinto. Prior to its removal, the aseptic shield protects the tapered nozzle surface from any form of contamination.

Hermetically sealed two-component mixing system

A laboratory gas burner and control apparatus including a burner assembly made from electrically conductive material and adapted for positioning on a counter. Defined by the burner is an inlet for connection to a gas source and an outlet for feeding gas to a flame. An electrically operated valve controls the flow of gas to the burner outlet and an igniter is energizable by a power supply to ignite gas emanating from the burner outlet. Associated with the igniter is an activation circuit that produces either ignition periods during which the igniter is energized by the supply or non-ignition periods during which the igniter is deenergized. Initiation of each ignition period requires manipulation of a manual activation mechanism. Once ignited, the presence of flame at the burner outlet is detected by a flame sensing mechanism. A valve control circuit maintains the supply valve open only during either ignition periods or periods during which flame is detected by the sensing mechanism.

Laboratory burner apparatus

Disclosed is a microwave oven for selectively quickly and safely raising the temperature of a plurality of distinct articles. Basic structural elements are a housing that defines an oven chamber, a door providing access thereto and an energy source for transmitting microwave energy into the chamber. Located within the chamber is a support assembly that defines a plurality of heating stations, each adapted to receive a distinct article to be heated. A temperature sensor is disposed in each of the stations so as to sense the temperture of an article retained therein. Coupled between the microwave source and the temperature sensors is a control circuit that automatically deenergizes the microwave source in response to the sensing of a temperature above a predetermined threshold by any of the individual sensors.

Microwave heating apparatus with plural temperature sensors

A permeability separatory device including a shell element that retains a woven mat wound into a roll and composed of a woof portion formed by a plurality of substantially parallel hollow membrane fibers having open inlet and outlet ends so as to provide parallel fluid flow paths and a plurality of warp portions formed by strands of yarn woven transversely to the hollow fibers so as to establish predetermined interstitial spacing therebetween. The open ends of the hollow fibers are sealed from a fluid circulation zone defined by the shell and retaining the wound roll. Also defined by the shell element are inlet and outlet openings for circulating a dialysate fluid through the circulation zone and over the surfaces of the hollow fibers. The warp portions of the woven mat include one warp portion for establishing at one end of the wound roll a given restriction to fluid flow axially therethrough and another warp portion for establishing at an opposite end thereof a greater restriction to fluid flow. An additional warp portion is formed by yarn woven obliquely to the hollow fibers and extends between opposite ends of the wound roll.

Growing community of inventors

Holliston, MA, United States of America

Carl W Walter