Spring

Details Spring Spring

1998-06-25

2000-09-05

Oberleitner, Robert J.

Spring devices

Spring panel

Spring means spacing loading surface vertically from plane...

267110, 5719, F16F 300, A47C 2304

Patent

active

061130826

ABSTRACT:
Disclosed is a spring formed from a synthetic resin into one body, including: a plurality of annular members arranged in such a manner as to be coaxial with each other and spaced in parallel to each other; and elastic linkage members for linking the annular members to each other at a plurality of points. In the spring, each of the elastic linkage members is arranged along a virtual cylindrical face formed by the annular members and formed into a lying U-shape curved in the peripheral direction of the annular members; radii of adjacent ones of the annular members are different from each other; and one end portion and the other end portion of each of the elastic linkage members, which portions are respectively linked to the adjacent ones of the annular members, are not overlapped to each other in the axial direction. These springs are locked integrally with a pair of upper and lower network plane members, which members include over the surfaces thereof locking members for locking upper and lower ends of the springs respectively, in such a manner as to be held therebetween, to form a spring assembly for a mattress.

REFERENCES:
patent: 2979739 (1961-04-01), Krakauer
patent: 3638254 (1972-02-01), Falkenau
patent: 3815887 (1974-06-01), Curtis et al.
patent: 3879025 (1975-04-01), Dillard
patent: 5165125 (1992-11-01), Callaway
patent: 5558314 (1996-09-01), Weinstein
patent: 5588165 (1996-12-01), Fromme
patent: 5632473 (1997-05-01), Dias Magalhaes Queiroz
patent: 5785303 (1998-07-01), Kutschi

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