Assembly for rapid and accurate testing of encapsulated devices

A test assembly for encapsulated electrical devices comprising

• a generally-cylindrical body portion,
• the body portion containing a plurality of channels extending in a direction paralleling a cylindrical axis of the body portion through the body portion from one end of the body portion toward an opposite end,
• conductive terminals extending outward from the body portion,
• a first plurality of spring contacts, one spring contact positioned in each of the channels providing a conductive path to one of the conductive contacts,
• a second plurality of spring contacts, each of the second plurality of spring contacts providing a measuring path which may be connected to one of the conductive contacts to a provide a measuring path for a high impedance testing device, and
• means for urging each of the first plurality of spring contacts and each of the second plurality of spring contacts into conductive contact with a lead from any encapsulated electrical device placed in a channel, the first plurality of spring contacts adapted to contact a lead at a first distance from the device, and the second plurality of spring contacts adapted to contact a lead at a second distance from the device,
• the means for urging each of the first plurality of spring contacts and each of the second plurality of spring contacts into conductive contact with a lead from any encapsulated electrical device placed in a channel comprising:
• a sleeve positioned around the body portion in sliding relationship therewith.
• the sleeve having an inner surface adapted to contact a portion of each of the first plurality of spring contacts and urge each such spring contact inwardly in one position and to allow each spring contact to relax in another position,
• the sleeve having an outer surface adapted to retract each of the second plurality of spring contacts from contact with a lead in one position and allow each of the second plurality of spring contacts to move into conductive contact with a lead in another position, and
• means for urging the second plurality of spring contacts toward the channels.

An encapsulated electrical device comprising

• a generally-cylindrical body portion manufactured of a material generally impervious to extreme variations in temperature,
• the body portion containing a plurality of channels extending in a direction generally parallel to a cylindrical axis of the body portion through the body portion from one end of the body portion toward the other end,
• each of the channels being shaped to receive a lead from an encapsulated device to be tested;
• a spring contact held in each of the channels providing a conductive path to the other end of the body portion;
• the spring contact having a portion extending into the opening to the outer cylindrical surface of the body portion;
• a plurality of conductors surrounding the spring contacts and held in positions adjacent each of the channels;
• and
• means for urging the spring contact in each of the channels and one of the plurality of conductors adjacent each of the channels into conductive contact with a lead from any encapsulated electrical device placed in a channel.

A test assembly for encapsulated electrical devices Comprising

• a generally-cylindrical body portion manufactured of a material generally impervious to extreme variations in temperature,
• the body portion containing a plurality of channels extending in a direction generally parallel to a cylindrical axis of the body portion through the body portion from one end of the body portion toward the other end,
• each of the channels being shaped to receive a lead from an encapsulated device to be tested;
• a spring contact held in each of the channels providing a conductive path to the other end of the body portion;
• the spring contact having a portion extending into the opening to the outer cylindrical surface of the body portion;
• a plurality of conductors surrounding the spring contacts and held in position adjacent each of the channels;
• and
• means for urging the spring contact in each of the channels and one of the plurality of conductors into conductive contact with a lead from any encapsulated electrical device placed in a channel
• the means for urging the spring contact in each of the channels and one of the plurality of conductors into conductive contact with a lead from any encapsulated electrical device placed in a channel comprising
• a sleeve positioned around the body portion in sliding relationship therewith,
• the sleeve having an inner surface adapted to contact a portion of each spring contact within the opening to the outer cylindrical surface of the body portion and urge each spring contact inwardly in one position and to allow each spring contact to relax outwardly in another position,
• the sleeve having an outer surface adapted to contact a portion of each one of the plurality of conductors and urge each one of the conductors outwardly in one position and to
• allow each one of the plurality of conductors to relax inwardly in another position;
• and
• means for urging each one of the conductors inwardly.