Coil spring assembly and forming method

Details Coil spring assembly and forming method Coil spring assembly and forming method

1979-10-04

1981-10-20

Butler, Douglas C.

Spring devices

Spring panel

Spring panel comprises vertically oriented compressible coil...

5269, 5474, 140 3CA, 140 924, 267 95, 267 96, 267166, F16F 304

Patent

active

042956390

ABSTRACT:
A coil spring assembly, and a method of forming that assembly, in which the assembly's edgemost coil springs are connected to a border wire by a single continuous spiral lacing wire. The method involves the steps of guiding a rotation spiral lacing wire completely around the periphery of a spring coil matrix and border wire through use of helical path defining dies until the leading and trailing ends of the lacing wire are overlapped. During the lacing operation, the helical path defining dies cooperate to deflect a peripheral segment of each corner and edge coil into juxtaposition with the border wire. The resulting final coil spring assembly includes corner coil springs in which the deflected peripheral segments of the corner coils are retained contiguous to the corner of the border wire by the lacing wire.

REFERENCES:
patent: 2688757 (1954-09-01), Bronstien
patent: 2945245 (1960-07-01), Gleason
patent: 3264660 (1966-08-01), Goldmeyer et al.
patent: 3517398 (1970-06-01), Patton
patent: 4095297 (1978-06-01), Thomas, Jr.
patent: 4124041 (1978-11-01), Higgins

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