A double spring function seat spring assembly combines a U-shaped frame with a closed front, a number of leaf springs (26-28) connected between the front and a cross piece and a plurality of coil springs (36, 38, 40) supporting the cross piece from the frame, the leaf springs formed with a series of W and V arches to enable flexing and extension for improved durability and comfort.
Double spring function upholstered furniture spring assemblies
2015-08-11
Patent
Electronic Resource
English
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