Title:
SPRING
Document Type and Number:
Japanese Patent JPS5854245
Kind Code:
A
Abstract:
PURPOSE:To obtain a spring, in those used for a mattress and the like, where flection is caused for a load to a certain level at the beginning and then large elasticity can be presented for the load with a very small amount of flection, by using an oval sectional steel wire. CONSTITUTION:A spring 2 is arranged in such a manner that the longitudinal direction of an oval sectional hard steel wire is positioned in an axial line direction of the spring 2 in the first and second receiver parts 4, 5, and the longitudinal direction is positioned in the direction, crossing at a right angle with a winding direction, that is, almost in the axial line direction in the first and second spiral parts 6, 8, while the longitudinal direction is positioned in the direction, crossing at a right angle with the sloped direction of a torsion part 7 in the torsion part 7. Accordingly, large resisting force can be obtained in the spiral parts 6, 8 and the torsion part 7.
Inventors:
IKEDA MINORU
Application Number:
JP14979081A
Publication Date:
March 31, 1983
Filing Date:
September 22, 1981
Export Citation:
Assignee:
FRANCE BED CO
International Classes:
A47C27/06; A47C7/35; A47C23/04; A47C23/043; F16F1/02; F16F3/02; (IPC1-7): A47C7/35; A47C23/30; A47C27/04; F16F3/02
Attorney, Agent or Firm:
Takehiko Suzue