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US 3,937,256 AGranted
Apparatus for manufacturing corner springs
AssigneeFrance Bed Co., Ltd.
InventorYoshiharu Hamaguchi
Life of this patent
Estimating the term…
Abstract
An apparatus for manufacturing corner springs which comprises a pair of spring leg-forming mechanisms for folding both ends of a wire several times to provide spring legs at said ends; a pair of heat-treating devices for heat-treating a wire having spring legs formed at both ends; and a pair of spring leg-bending mechanisms for bending the heat-treated spring legs.
Claims11
A corner spring-manufacturing apparatus which comprises a pair of spring leg-forming mechanisms for folding both ends of a wire several times to provide spring legs at said ends;
- a pair of heat treatment devices for heat-treating the wire now having spring legs formed at both ends;
- and a pair of spring leg-bending mechanisms for bending the heat-treated spring legs.
Dependencies are inferred from the claim text.