Envirotronics, Inc.

Gregory J Langfeldt

Dwayne D Botruff

Charles F Felkins

Gregory M Gilles

An environmental test chamber comprises a first chamber and a second chamber separated by a partition. The first chamber receives one or more electronic components to be tested. The first chamber includes an exhaust area through which air is introduced to the first chamber and an intake area from which air is evacuated from the first chamber. The exhaust area and intake area are both fitted with a panel having a plurality of apertures. The size and/or the distance between the apertures is varied to provide a uniform airflow through the first chamber, thereby insuring that each electrical component housed within the first chamber experiences the desired temperature and humidity conditions. An air intake assembly is provided which draws air into a control panel chamber housing the electrical circuitry necessary to operate the environmental test chamber, and transports the air into the second chamber to thereby permit both the control panel chamber and the second chamber to receive ambient air. An air manifold is positioned below the partition and injects dry, compressed air upward through the partition to thereby pressurize the same. Pressurization of the partition assures that heated air and/or moisture residing within the first chamber does not migrate into the second chamber and thus avoids thermal and humidity gradients within the first chamber.

Environmental test chamber

A vibration table includes a base, a plurality of springs, and a platform supported by the springs on the base. The platform includes spaced-apart first and second sides and at least one reinforcing member extending transversely across the second side. The first side of the platform defines a mounting or support surface for mounting articles on the vibration table. The second side includes a plurality of reinforcing members. The platform is vibrated by a plurality of vibration assemblies which are mounted to the reinforcing members whereby the reinforcing member distributes vibration from the vibration assemblies uniformly across the platform. At least one of the reinforcing members includes a mounting surface which extends generally orthogonal to the second side of the platform.

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Kentwood, MI, United States of America

Gregory J Langfeldt