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Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 11, 2015
0Patent Application Number
105953300
Date Filed
October 4, 2004
0Patent Citations Received
Patent Primary Examiner
Patent abstract
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.
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