Tensile cryostat

Claim 1

A DEVICE FOR USE WITH STANDARD LOW TEMPERATURE TESTING APPARATUS COMPRISING; A DEWAR VESSEL HAVING AN INNER CAN, AN OUTER CAN, A RADIATION SHIELD AND CHARCOAL GETTER THEREIN AND AN EVACUATION VALVE THEREON; A PLASTIC FOAM INSULATING COVER FOR SAID CONTAINER; SAID COVER HAVING AN ANNULAR SLOT THEREIN FOR RECEIVING THE UPPER PORTION OF SAID DEWAR VESSEL; A CENTRAL CYLINDRICAL HOLE IN SAID COVER; AN INVERTED CAN WITHIN SAID INNER CAN TO THEREBY PROVIDE A TEST CHAMBER WITHIN SAID INVERTED CAN AND A SPACE FOR COOLING MATERIAL BETWEEN SAID INVERTED CAN AND THE INNER CAN OF SAID DEWAR VESSEL; A FIRST AND SECOND SPECIMEN HOLDING CHUCK WITHIN SAID INVERTED CAN; A FIRST MEANS, PASSING THROUGH SAID CENTRAL HOLE IN SAID COVER AND INTEGRAL WITH THE FIRST CHUCK, FOR SUPPLYING TEST FORCES TO SAID TEST SPECIMEN; MEANS FOR PROVIDING A HEAT SEAL BETWEEN SAID TEST FORCE SUPPLYING MEANS AND SAID COVER; A SECOND MEANS FOR APPLYING TEST FORCES TO THE SECOND OF SAID CHUCKS; A HIGH HEAT FLOW RESISTANCE COUPLING CONNECTED BETWEEN SAID SECOND TEST SPECIMEN HOLDING MEANS AND SAID SECOND TEST FORCE APPLYING MEANS; SAID COUPLING INCLUDING A UNIVERSAL JOINT CONNECTED TO SAID SECOND CHUCK AND A MULTIPLE CONTACT LINKAGE; SAID MULTIPLE CONTACT LINKAGE INCLUDING A CENTRAL SHAFT HAVING A FLANGE THEREON CONNECTED TO SAID UNIVERSAL JOINT, AN OUTER RETAINER, A PLURALITY OF WASHERS SURROUNDING SAID CENTRAL SHAFT AND LOCATED BETWEEN SAID FLANGE ON SAID SHAFT AND SAID OUTER RETAINER, AND A COUPLING MEMBER CONNECTED BETWEEN SAID SECOND FORCE APPLYING MEANS AND SAID OUTER RETAINER; MEANS CONNECTED BETWEEN SAID SECOND CHUCK AND THE BOTTOM OF SAID INNER CAN FOR SEALING THE TEST CHAMBER FROM THE SPACE BETWEEN THE INNER AND OUTER CAN OF SAID DEWAR VESSEL; A SEAL BETWEEN SAID OUTER RETAINER AND SAID OUTER CAN TO THEREBY PROVIDE A VACUUM SPACE BETWEEN THE INNER AND OUTER CAN; A HEATING ELEMENT ON EACH OF SAID SPECIMEN HOLDING MEANS AND A MEANS FOR CONNECTING A POWER SOURCE TO SAID HEATING ELEMENTS.

Claim 2

A DEVICE FOR USE WITH STANDARD LOW TEMPERATURE TESTING APPARATUS COMPRISING; A DEWAR VESSEL HAVING AN INNER CAN, AN OUTER CAN, A RADIATION SHIELD AND CHARCOAL GETTER THEREIN AND AN EVACUATION VALVE THEREON; A PLASTIC FOAM INSULATING COVER FOR SAID CONTAINER; SAID COVER HAVING AN ANNULAR SLOT THEREIN FOR RECEIVING THE UPPER PORTION OF SAID DEWAR VESSEL; A CENTRAL CYLINDRICAL HOLE IN SAID COVER; AN INVERTED CAN WITHIN SAID INNER CAN TO THEREBY PROVIDE A TEST CHAMBER WITHIN SAID INVERTED CAN AND A SPACE FOR COOLING MATERIAL BETWEEN SAID INVERTED CAN AND THE INNER CAN OF SAID DEWAR VESSEL; A FIRST AND SECOND SPECIMEN HOLDING CHUCK WITHIN SAID INVERTED CAN; A FIRST MEANS, PASSING THROUGH SAID CENTRAL HOLE IN SAID COVER AND INTEGRAL WITH THE FIRST CHUCK, FOR SUPPLYING TEST FORCES TO SAID TEST SPECIMEN; MEANS FOR PROVIDING A HEAT SEAL BETWEEN SAID TEST FORCE SUPPLYING MEANS AND SAID COVER; A SECOND MEANS FOR APPLYING TEST FORCES TO THE SECOND OF SAID CHUCKS; A HIGH HEAT FLOW RESISTANCE COUPLING CONNECTED BETWEEN SAID SECOND TEST SPECIMEN HOLDING MEANS AND SAID SECOND TEST FORCE APPLYING MEANS; SAID COUPLING INCLUDING A UNIVERSAL JOINT CONNECTED TO SAID SECOND CHUCK AND A MULTIPLE CONTACT LINKAGE; SAID MULTIPLE CONTACT LINKAGE INCLUDING A CENTRAL SHAFT HAVING A FLANGE THEREON CONNECTED TO SAID UNIVERSAL JOINT, AN OUTER RETAINER, A PLURALITY OF WASHERS SURROUNDING SAID CENTRAL SHAFT AND LOCATED BETWEEN SAID FLANGE ON SAID SHAFT AND SAID OUTER RETAINER, AND A COUPLING MEMBER CONNECTED BETWEEN SAID SECOND FORCE APPLYING MEANS AND SAID OUTER RETAINER; MEANS CONNECTED BETWEEN SAID SECOND CHUCK AND THE BOTTOM OF SAID INNER CAN FOR SEALING THE TEST CHAMBER FROM THE SPACE BETWEEN THE INNER AND OUTER CAN OF SAID DEWAR VESSEL; A SEAL BETWEEN SAID OUTER RETAINER AND SAID OUTER CAN TO THEREBY PROVIDE A VACUUM SPACE BETWEEN THE INNER AND OUTER CAN; A HEATING ELEMENT ON EACH OF SAID SPECIMEN HOLDING MEANS AND A MEANS FOR CONNECTING A POWER SOURCE TO SAID HEATING ELEMENTS.