An incubator for laboratory use which includes a housing defining a thermally insulated inner chamber having a controlled gas atmosphere. Devices for sensing characteristics of the incubator chamber atmosphere, and for conditioning the atmosphere, are positioned in a gas recirculation path outside the incubator chamber. The gas atmosphere of the incubator chamber circulates from a chamber outlet in an upper portion of the chamber, through the recirculation path, returning to the incubator chambe...

Organophosphazene polymers having acyloxysilyl or alkoxysilyl substituents are curable at room temperature when exposed to atmosphere containing moisture.

An oven for heating a distillable material in a preselected gas atmosphere. The oven comprises an inner heating chamber adapted to receive a spherical gravity lid, the heating chamber being connected to and in communication with a gas exhaust tube having a condensate trap at the termination thereof. The inner heating chamber is also in communication with and surrounded by an outer gas flow chamber, the outer gas flow chamber having a plurality of heater elements therein. The gas exhaust tube is ...

A device for maintaining a controlled atmosphere within a sealed container. The device is utilized to control the oxygen and the carbon dioxide levels within the container and utilizes permeable membrane technology to control such levels. An oilless compressor is used in conjunction with the device so as to not subject the permeable membranes to the derogatory effects associated with the presence of oil within an airstream that circulates through the permeable membranes. Additionally, the compre...

Disclosed is a continuous atmosphere controlled furnace for aluminum brazing and other purposes. A plurality of pots are suspended from a circular roof rotatable in a horizontal plane and arranged in a circle having a center on the axis of rotation of the roof. Each pot comprises a body having an open top and a cover capable of closing the open top of the body. The open top of each pot projects above the roof and that portion of each pot which contains the material to be heated extends downwardl...

An inert gas chamber for use in continuously curing oxygen sensitive coating compositions by the application of radiation, employs a jet of inert gas to displace the air boundary layer on the coated substrate as the coated substrate moves into the chamber. The coated substrate is also blanketed with inert gas and subjected to the radiation. The use of inert gas to cool the window of the electron beam accelerator may be used in the chamber, thus avoiding ozone-based pollution.

An inexpensive badge for detection of dangerous gases wherein a plurality of paper discs impregnated with a color sensitive gas indicator chemical are mounted in alignment with apertures in a plastic substrate by a pressure sensitive tape backing. The front face of the substrate is covered with a further strip of pressure sensitive tape, which is removed to initiate indication of gas dosage by the detector.

In a vegetables and fruits-storing method of conventional controlled atmosphere storage including continuously feeding the air of a definite oxygen content such as, for example, 2 - 3% by volume and definite amount obtain by means of an adsorber into a refrigerator to obtain an atmosphere suitable for storage of the vegetables and fruits, an improved method wherein the improvement comprises in the first step feeding the open air and the atmosphere of the refrigerator to be recycled in such order...

An interior atmosphere control system contains a group of sensors to detect/measure indoor and outdoor air temperature, humidity, air pressure, oxygen content, carbon-dioxide content, static electric charge, indoor wall temperature, sound and light. These measured results, through a signal transfer interface, are sent to a microcomputer which also accepts a user's command as input data through a user's interface. The microcomputer, based on a monitor/control program and data prestored in its mem...

An apparatus to produce a low oxygen containing gas in which exhaust gases from an engine are cooled by passing them through a manifold cooler. Harmful gases are removed by passing the exhaust gases through a catalytic converter for removal of NOX. Air in injected and the exhaust gas passed through a further catalytic converter for removal of CO. The exhaust gases are then cooled by passing them through an air to gas heat exchanger, and a series of water-cooled heat exchangers which are water-co...