Coil spring assembly

Details Coil spring assembly Coil spring assembly

1977-05-11

1978-06-20

Nunberg, Casmir A.

Beds

Bedsteads

Having bottom

5267, 5269, A47C 2304

Patent

active

040952975

ABSTRACT:
A coil spring assembly stable against torque twist deterioration, assembled of rows of coils of alternate right and left-hand, the coils having wound ends, the end turns of each coil having linear portions normal to the row and interconnected with linear portions of adjacent coils by cross helicals extending across the assembly normal to the rows.

REFERENCES:
patent: 1337320 (1920-04-01), Karr
patent: 1816238 (1931-07-01), Steele
patent: 1860642 (1932-05-01), Zimmerman
patent: 1899087 (1933-02-01), Foster
patent: 2257375 (1941-09-01), Gleason

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