Method for making a combination foam-spring cushion

Claim 1

A PROCESS OF THE CHARACTER DESCRIBED FOR MAKING A SYMMETRICAL SPRING-REINFORCED ELASTOMERIC FOAM CUSHION FOR SEATS AND BACKS COMPRISING THE STEPS OF INSERTING LIQUID FOAM-FORMING INGREDIENTS INTO A GENERALLY RECTANGULAR MOLD CAVITY OF SUBSTANTIALLY UNIFORM DEPTH, THEREAFTER PLACING A GENERALLY RECTANGULAR FABRIC ENCLOSED COIL-SPRING UNIT OF UNIFORM HEIGHT AT THE CENTER OF SAID MOLD CAVITY PARALLEL TO AND OUT OF CONTACT WITH THE WALLS OF SAID CAVITY, ALLOWING SAID INGREDIENTS TO REACT AND EXPAND WHILE LIMITING THE EXPANSION OF THE FOAM BEYOND THE MEDIAL PLANE OF SAID SPRING UNIT TO FORM A CONTINUOUS HOMOGENEOUS ELASTOMERIC FOAM ENCLOSING HALF OF SAID SPRING UNIT AND PENETRATING THE INTERSTICES OF THE FABRIC AT THE TOP, SIDES AND ENDS OF SAID UNIT, REMOVING THE RESULTING INTERMEDIATE PRODUCT FROM THE MOLD CAVITY, INSERTING LIQUID FOAM-FORMING INGREDIENTS INTO A MOLD CAVITY OF THE SAME SHAPE AS SAID FIRST-NAMED MOLD CAVITY, INVERTING SAID INTERMEDIATE PRODUCT AND PLACING THE OTHER PROJECTING HALF OF SAID SPRING UNIT INTO SAID LAST-NAMED MOLD CAVITY, AND ALLOWING SAID LAST-NAMED INGREDIENTS TO REACT AND EXPAND TO FORM A CONTINUOUS HOMOGENEOUS ELASTOMERIC FOAM ENCLOSING SAID OTHER HALF OF THE SPRING UNIT AND PENETRATING THE INTERSTICES OF SAID FABRIC, WHEREBY THE FOAM COMPLETELY ENCLOSES THE COIL-SPRING UNIT.