Method for making a combination foam-spring cushion

• US 3,204,016 A
• Filed: 07/18/1961
• Issued: 08/31/1965
• Est. Priority Date: 07/18/1961
• Status: Expired due to Term

• Current Assignee: Merle J. Sanger, Wagenen Donald Van
• Original Assignee: Merle J. Sanger, Wagenen Donald Van
• Inventors: Sanger, Merle J., WAGENEN DONALD VAN
• Application Number:
  US04/124,841
• Time in Patent Office: 1,505 Days
• US Class Current: 264/46.7
• CPC Class Codes: A47C 27/05 with padding material, e.g. foamed material, in top, bottom, or side layers
• CPC Class Codes: A47C 27/053 with only one layer of foamed material
• CPC Class Codes: A47C 27/064 Pocketed springs
• CPC Class Codes: A47C 27/20 with springs moulded in, or situated in cavities or openings in foamed material
• CPC Class Codes: B29C 44/12 Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
• CPC Class Codes: B29C 44/1209 by impregnating a preformed part, e.g. a porous lining
• CPC Class Codes: B29C 44/1266 the preformed part being completely encapsulated, e.g. for packaging purposes or as reinforcement
• CPC Class Codes: B29K 2105/06 containing reinforcements, fillers or inserts
• CPC Class Codes: B29L 2031/751 Mattresses, cushions upholstery B29L2031/58
• CPC Class Codes: B68G 9/00 Placing upholstery springs in pockets; Fitting springs in upholstery
• CPC Class Codes: Y10S 297/01 Foam

Claims

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.